diff --git a/backend/handlers/files.go b/backend/handlers/files.go
index c2dc034..96b8f7f 100644
--- a/backend/handlers/files.go
+++ b/backend/handlers/files.go
@@ -85,6 +85,13 @@ func FilesUpload(c *gin.Context) {
 	}
 	userID := c.GetString(UserIDKey)
 	folderID := c.PostForm("folderId")
+	// resourceId optionnel : cible un fichier déjà connu (metadata-only de
+	// l'outbox) pour lui attacher ses octets physiques (ex. OCR serveur).
+	resourceID := c.PostForm("resourceId")
+	if resourceID != "" && !deviceIDPattern.MatchString(resourceID) {
+		api.Error(c, http.StatusNotFound, "NOT_FOUND", "file not found")
+		return
+	}
 
 	c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, Store.MaxFileSize+1)
 	file, err := c.FormFile("file")
@@ -102,7 +109,7 @@ func FilesUpload(c *gin.Context) {
 		return
 	}
 
-	dto, err := Store.Upload(userID, file, folderID)
+	dto, err := Store.Upload(userID, file, folderID, resourceID)
 	if err != nil {
 		writeError(c, err)
 		return
diff --git a/backend/handlers/files_test.go b/backend/handlers/files_test.go
index 588028a..c24bd2e 100644
--- a/backend/handlers/files_test.go
+++ b/backend/handlers/files_test.go
@@ -183,6 +183,29 @@ func uploadMultipart(t *testing.T, r *gin.Engine, token, folderID, filename stri
 	return rec
 }
 
+// uploadMultipartToResource uploads bytes targeted at an existing resource_id
+// (metadata-only file from the outbox), le cas d'usage OCR.
+func uploadMultipartToResource(t *testing.T, r *gin.Engine, token, resourceID, filename string, content []byte) *httptest.ResponseRecorder {
+	t.Helper()
+	var body bytes.Buffer
+	writer := multipart.NewWriter(&body)
+	part, err := writer.CreateFormFile("file", filename)
+	if err != nil {
+		t.Fatalf("create form file: %v", err)
+	}
+	if _, err := part.Write(content); err != nil {
+		t.Fatalf("write body: %v", err)
+	}
+	if err := writer.WriteField("resourceId", resourceID); err != nil {
+		t.Fatalf("write resourceId: %v", err)
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatalf("close writer: %v", err)
+	}
+	rec, _ := doRequest(t, r, http.MethodPost, "/api/v1/files/upload", token, body.Bytes(), writer.FormDataContentType())
+	return rec
+}
+
 func TestFilesFlow(t *testing.T) {
 	r, _, repo := setup(t)
 	deviceA := repository.NewID()
@@ -385,6 +408,67 @@ func TestUploadNameConflict(t *testing.T) {
 	expectError(t, rec, http.StatusConflict, "NAME_CONFLICT", "upload-dupe")
 }
 
+func TestUploadTargetsExistingResource(t *testing.T) {
+	r, _, repo := setup(t)
+	device := repository.NewID()
+	token, user := registerAndLogin(t, r, repo, testUserUsername(device, "tr"), "upload-test-password", device)
+
+	// Fiche metadata-only (même sémantique que l'outbox create_resource).
+	resourceID := repository.NewID()
+	if err := repo.Resources.InsertFile(user, resourceID, "scan.png", "", 0, nil, nil); err != nil {
+		t.Fatalf("insert metadata-only file: %v", err)
+	}
+
+	rec := uploadMultipartToResource(t, r, token, resourceID, "scan.png", []byte("PNGDATA"))
+	env := expectOK(t, rec, "upload-target")
+	var uploaded fileDTO
+	if err := json.Unmarshal(env.Data, &uploaded); err != nil {
+		t.Fatalf("upload-target: unmarshal: %v", err)
+	}
+	if uploaded.ID != resourceID {
+		t.Errorf("id attendu %s, got %s", resourceID, uploaded.ID)
+	}
+	if uploaded.Size != 7 {
+		t.Errorf("taille = %d, attendu 7", uploaded.Size)
+	}
+
+	// Toujours une seule ligne (pas de doublon).
+	rec, _ = doRequest(t, r, http.MethodGet, "/api/v1/files", token, nil, "")
+	env = expectOK(t, rec, "list-after-targeted-upload")
+	var files []fileDTO
+	if err := json.Unmarshal(env.Data, &files); err != nil {
+		t.Fatalf("list: unmarshal: %v", err)
+	}
+	if len(files) != 1 || files[0].ID != resourceID {
+		t.Errorf("aucun doublon attendu, got %+v", files)
+	}
+}
+
+func TestUploadTargetForeignResourceNotFound(t *testing.T) {
+	r, _, repo := setup(t)
+	deviceA := repository.NewID()
+	deviceB := repository.NewID()
+	tokenA, _ := registerAndLogin(t, r, repo, testUserUsername(deviceA, "tf"), "upload-test-password", deviceA)
+	_, userB := registerAndLogin(t, r, repo, testUserUsername(deviceB, "tg"), "upload-test-password-b", deviceB)
+
+	resourceID := repository.NewID()
+	if err := repo.Resources.InsertFile(userB, resourceID, "mine.png", "", 0, nil, nil); err != nil {
+		t.Fatalf("insert B file: %v", err)
+	}
+
+	rec := uploadMultipartToResource(t, r, tokenA, resourceID, "mine.png", []byte("DATA"))
+	expectError(t, rec, http.StatusNotFound, "NOT_FOUND", "upload-foreign")
+}
+
+func TestUploadTargetInvalidID(t *testing.T) {
+	r, _, repo := setup(t)
+	device := repository.NewID()
+	token, _ := registerAndLogin(t, r, repo, testUserUsername(device, "ti"), "upload-test-password", device)
+
+	rec := uploadMultipartToResource(t, r, token, "NOT-HEX", "x.png", []byte("DATA"))
+	expectError(t, rec, http.StatusNotFound, "NOT_FOUND", "upload-invalid-id")
+}
+
 func TestFoldersListAndScoping(t *testing.T) {
 	r, _, repo := setup(t)
 	deviceA := repository.NewID()
diff --git a/backend/repository/resources.go b/backend/repository/resources.go
index dbd1ed2..dae503f 100644
--- a/backend/repository/resources.go
+++ b/backend/repository/resources.go
@@ -433,6 +433,29 @@ func (r *Resources) UpdateNameByID(resourceID, name string) error {
 	return nil
 }
 
+// UpdatePhysical refreshes an existing file row's physical metadata
+// (size_bytes / mime_type / extension) after a targeted re-upload — used so a
+// resource created metadata-only (outbox create_resource) receives its bytes
+// for server-side OCR. Absent / not owned → ErrNotFound. Never renames or moves.
+func (r *Resources) UpdatePhysical(ownerID, resourceID string, size int64, mimeType, extension *string) error {
+	result, err := r.DB.Exec(
+		`UPDATE resources SET size_bytes = $3, mime_type = $4, extension = $5, updated_at = NOW()
+		 WHERE resource_id = $1 AND user_id = $2 AND type = 'file' AND deleted_at IS NULL`,
+		resourceID, ownerID, size, mimeType, extension,
+	)
+	if err != nil {
+		return err
+	}
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return ErrNotFound
+	}
+	return nil
+}
+
 // SyncDelete soft-deletes a resource; absence is NOT an error (idempotent
 // terminal state for the outbox).
 func (r *Resources) SyncDelete(ownerID, resourceID string) error {
diff --git a/backend/service/resources.go b/backend/service/resources.go
index 60039ef..6dd6143 100644
--- a/backend/service/resources.go
+++ b/backend/service/resources.go
@@ -104,30 +104,51 @@ func (s *Resources) SearchFiles(ownerID, q string, page, pageSize int) ([]FileDT
 // Upload persists the multipart-sourced file under UploadDir/<user> and
 // records its metadata, returning the FileDTO. The physical file is removed
 // if metadata persistence fails (e.g. name conflict).
-func (s *Resources) Upload(ownerID string, file *multipart.FileHeader, folderID string) (FileDTO, error) {
+//
+// When resourceID is non-empty the upload TARGETS an existing file owned by
+// the user (metadata-only resource from the outbox, or a previously uploaded
+// file): the bytes are written under UploadDir/<user>/<resourceID>.<ext> and
+// only the physical metadata (size/mime/extension) is refreshed — never a
+// rename, never a move, never a duplicate row. Unknown / foreign resource →
+// repo.ErrNotFound.
+func (s *Resources) Upload(ownerID string, file *multipart.FileHeader, folderID, resourceID string) (FileDTO, error) {
 	if file.Size > s.MaxFileSize {
 		return FileDTO{}, ErrFileTooLarge
 	}
 
-	id := repository.NewID()
+	targetExisting := resourceID != ""
+	if targetExisting {
+		if _, err := s.Repo.GetFile(ownerID, resourceID); err != nil {
+			return FileDTO{}, err
+		}
+	} else {
+		resourceID = repository.NewID()
+	}
+
 	extension := strings.TrimPrefix(filepath.Ext(file.Filename), ".")
 	destDir := filepath.Join(s.UploadDir, ownerID)
 	if err := os.MkdirAll(destDir, 0o755); err != nil {
 		return FileDTO{}, fmt.Errorf("create upload dir: %w", err)
 	}
 
-	destPath := filepath.Join(destDir, id+"."+extension)
+	destPath := filepath.Join(destDir, resourceID+"."+extension)
 	if err := copyMultipart(file, destPath); err != nil {
 		return FileDTO{}, err
 	}
 
 	mimeType := file.Header.Get("Content-Type")
-	if err := s.Repo.InsertFile(ownerID, id, file.Filename, folderID, file.Size, &mimeType, &extension); err != nil {
+	var err error
+	if targetExisting {
+		err = s.Repo.UpdatePhysical(ownerID, resourceID, file.Size, &mimeType, &extension)
+	} else {
+		err = s.Repo.InsertFile(ownerID, resourceID, file.Filename, folderID, file.Size, &mimeType, &extension)
+	}
+	if err != nil {
 		_ = os.Remove(destPath)
 		return FileDTO{}, err
 	}
 
-	row, err := s.Repo.GetFile(ownerID, id)
+	row, err := s.Repo.GetFile(ownerID, resourceID)
 	if err != nil {
 		return FileDTO{}, err
 	}
diff --git a/backend/service/resources_test.go b/backend/service/resources_test.go
index a98e96a..bb15da3 100644
--- a/backend/service/resources_test.go
+++ b/backend/service/resources_test.go
@@ -42,7 +42,7 @@ func TestUploadPersistsPhysicalFile(t *testing.T) {
 	s := newServiceStore(t)
 	userID := mustCreateUser(t, s.Repository, "upload-happy")
 
-	dto, err := s.Upload(userID, multipartFileHeader(t, "docs.txt", []byte("hello")), "")
+	dto, err := s.Upload(userID, multipartFileHeader(t, "docs.txt", []byte("hello")), "", "")
 	if err != nil {
 		t.Fatalf("upload: %v", err)
 	}
@@ -70,7 +70,7 @@ func TestUploadRemovesPhysicalFileOnNameConflict(t *testing.T) {
 	}
 
 	target := multipartFileHeader(t, "dupe.txt", []byte("hello"))
-	first, err := s.Upload(userID, target, folderID)
+	first, err := s.Upload(userID, target, folderID, "")
 	if err != nil {
 		t.Fatalf("premier upload: %v", err)
 	}
@@ -79,7 +79,7 @@ func TestUploadRemovesPhysicalFileOnNameConflict(t *testing.T) {
 	}
 
 	// Même nom, même dossier → NAME_CONFLICT et pas de second fichier physique.
-	if _, err := s.Upload(userID, target, folderID); !errors.Is(err, repository.ErrNameConflict) {
+	if _, err := s.Upload(userID, target, folderID, ""); !errors.Is(err, repository.ErrNameConflict) {
 		t.Fatalf("second upload : attendu ErrNameConflict, got %v", err)
 	}
 
@@ -91,3 +91,74 @@ func TestUploadRemovesPhysicalFileOnNameConflict(t *testing.T) {
 		t.Errorf("fichier orphelin laissé après NAME_CONFLICT : %d fichiers", len(entries))
 	}
 }
+
+func TestUploadTargetsExistingResource(t *testing.T) {
+	s := newServiceStore(t)
+	userID := mustCreateUser(t, s.Repository, "upload-target")
+
+	// Fiche metadata-only créée par l'outbox côté client.
+	resourceID := repository.NewID()
+	ext := "png"
+	if err := s.Repository.Resources.InsertFile(userID, resourceID, "scan.png", "", 0, nil, &ext); err != nil {
+		t.Fatalf("insert metadata-only file: %v", err)
+	}
+
+	// Re-upload ciblé : mêmes octets, même resource_id, pas de doublon.
+	dto, err := s.Upload(userID, multipartFileHeader(t, "scan.png", []byte("PNGDATA")), "", resourceID)
+	if err != nil {
+		t.Fatalf("targeted upload: %v", err)
+	}
+	if dto.ID != resourceID {
+		t.Errorf("id attendu %s, got %s", resourceID, dto.ID)
+	}
+	if dto.Size != 7 {
+		t.Errorf("taille = %d, attendu 7 (rafraîchie)", dto.Size)
+	}
+
+	path := filepath.Join(s.UploadDir, userID, resourceID+".png")
+	info, err := os.Stat(path)
+	if err != nil {
+		t.Fatalf("fichier physique absent: %v", err)
+	}
+	if info.Size() != 7 {
+		t.Errorf("taille physique = %d, attendu 7", info.Size())
+	}
+
+	// Une seule ligne serveur (pas de doublon créé par le re-upload).
+	rows, total, err := s.Repo.ListFiles(userID, "", 50, 0, "", "")
+	if err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	if total != 1 || len(rows) != 1 || rows[0].ID != resourceID {
+		t.Errorf("liste après re-upload: total=%d rows=%+v", total, rows)
+	}
+}
+
+func TestUploadTargetsOwnedResourceOnly(t *testing.T) {
+	s := newServiceStore(t)
+	userID := mustCreateUser(t, s.Repository, "upload-owner")
+	otherUser := mustCreateUser(t, s.Repository, "upload-owner-other")
+
+	resourceID := repository.NewID()
+	if err := s.Repository.Resources.InsertFile(otherUser, resourceID, "mine.png", "", 0, nil, nil); err != nil {
+		t.Fatalf("insert other's file: %v", err)
+	}
+
+	// Un resource_id d'un autre user → ErrNotFound, aucun octet écrit.
+	if _, err := s.Upload(userID, multipartFileHeader(t, "mine.png", []byte("DATA")), "", resourceID); !errors.Is(err, repository.ErrNotFound) {
+		t.Fatalf("upload cross-user : attendu ErrNotFound, got %v", err)
+	}
+	// Le dossier upload du user ne doit pas avoir été créé (échec avant écriture).
+	if _, err := os.Stat(filepath.Join(s.UploadDir, userID)); !os.IsNotExist(err) {
+		t.Errorf("dossier upload créé à tort ou erreur inattendue: %v", err)
+	}
+}
+
+func TestUploadTargetUnknownIsNotFound(t *testing.T) {
+	s := newServiceStore(t)
+	userID := mustCreateUser(t, s.Repository, "upload-unknown")
+
+	if _, err := s.Upload(userID, multipartFileHeader(t, "ghost.png", []byte("DATA")), "", repository.NewID()); !errors.Is(err, repository.ErrNotFound) {
+		t.Fatalf("upload inconnu : attendu ErrNotFound, got %v", err)
+	}
+}
diff --git a/docs/api-v1.md b/docs/api-v1.md
index 867bff3..32e8b21 100644
--- a/docs/api-v1.md
+++ b/docs/api-v1.md
@@ -68,7 +68,8 @@ type OcrJob = { id: string; status: OcrJobStatus; text?: string | null; error?:
 
 ## 4. Upload
 
-- Multipart : champ `file` + `folderId?` optionnel. **Le client ne fixe jamais `Content-Type`** (le boundary doit être généré par la plateforme).
+- Multipart : champ `file` + `folderId?` optionnel + `resourceId?` optionnel. **Le client ne fixe jamais `Content-Type`** (le boundary doit être généré par la plateforme).
+- `resourceId` optionnel : cible un **fichier déjà connu du user** (créé metadata-only via l'outbox `create_resource`, ou précédemment uploadé) pour lui **attacher ses octets physiques** — cas d'usage : le client local-first doit fournir le bytes d'un fichier SAF pour l'OCR serveur (`POST /ocr/jobs`). Le `resourceId` fourni doit exister et appartenir au user (sinon `NOT_FOUND`, même réponses/format que `GET /files/:id`) ; la ligne n'est **jamais re-créée ni renommée ni déplacée**, seule la métadonnée physique (`size`/`mimeType`/extension) est rafraîchie et `FileDto` renvoyé. `resourceId` absent → comportement historique (nouvelle ressource).
 - Limite : `MAX_FILE_SIZE_MB` (défaut 50). Dépassement → 413 `{ "error": { "code": "FILE_TOO_LARGE", … } }`.
 - Le fichier physique est stocké sous `UPLOAD_DIR/<user_id>/<resource_id>.<ext>` ; la métadonnée est persistée en base et renvoyée en `FileDto`. Si la persistance de la métadonnée échoue (ex. `NAME_CONFLICT`), le fichier physique est supprimé.
 
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/AppDatabase.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/AppDatabase.kt
index fea0b9c..d1154aa 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/AppDatabase.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/AppDatabase.kt
@@ -19,14 +19,15 @@ import com.vaultdrop.mobile.data.local.entity.UserPreferenceEntity
  * v1: folders ; v2: user_preferences ; v3: files ; v4: category sur files ;
  * v5: created_in_app sur folders ; v6: processed sur files (mode review) ;
  * v7: pending_operations (outbox) ; v8: scan_sessions + scan_pages (scanner) ;
- * v9: content sur files (corps des notes créées dans l'app).
+ * v9: content sur files (corps des notes créées dans l'app) ;
+ * v10: ocr_text sur files (extrait OCR serveur persisté localement).
  */
 @Database(
     entities = [
         FolderEntity::class, UserPreferenceEntity::class, FileEntity::class,
         PendingOperationEntity::class, ScanSessionEntity::class, ScanPageEntity::class,
     ],
-    version = 9,
+    version = 10,
     exportSchema = false,
 )
 abstract class AppDatabase : RoomDatabase() {
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
index 03960c0..5c25c47 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
@@ -122,4 +122,8 @@ interface FileDao {
         WHERE "exists" = 1 AND processed = 0 AND uri IS NOT NULL
     """)
     suspend fun markAllProcessed(updatedAt: Long)
+
+    /** Persiste l'extrait OCR d'un fichier (résultat local du job serveur). */
+    @Query("UPDATE files SET ocr_text = :text, updated_at = :updatedAt WHERE resource_id = :resourceId")
+    suspend fun updateOcrText(resourceId: String, text: String?, updatedAt: Long)
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/FileEntity.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/FileEntity.kt
index 9dd1987..f8817bf 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/FileEntity.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/entity/FileEntity.kt
@@ -55,6 +55,8 @@ data class FileEntity(
     val content: String? = null,
     @ColumnInfo(name = "processed")
     val processed: Boolean = false,
+    @ColumnInfo(name = "ocr_text")
+    val ocrText: String? = null,
     @ColumnInfo(name = "added_at")
     val addedAt: Long,
     @ColumnInfo(name = "updated_at")
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/migration/Migrations.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/migration/Migrations.kt
index f7b6dcb..25171fc 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/migration/Migrations.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/migration/Migrations.kt
@@ -24,6 +24,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
  *   multi-pages persistée pour survivre au process death avant export SAF.
  * v9 : ajout colonne `content` sur `files` — corps d'une note créée dans
  *   l'app (fichier cloud-only, uri = NULL). Null pour les fichiers importés.
+ * v10 : ajout colonne `ocr_text` sur `files` — extrait OCR serveur persisté
+ *   localement (résultat d'un job `POST /ocr/jobs`, réaffichable sans relance).
  */
 object Migrations {
 
@@ -166,7 +168,13 @@ object Migrations {
         }
     }
 
+    private val MIGRATION_9_10 = object : Migration(9, 10) {
+        override fun migrate(db: SupportSQLiteDatabase) {
+            db.execSQL("ALTER TABLE `files` ADD COLUMN `ocr_text` TEXT")
+        }
+    }
+
     val ALL: Array<Migration> = arrayOf(
-        MIGRATION_1_2, MIGRATION_2_3, MIGRATION_3_4, MIGRATION_4_5, MIGRATION_5_6, MIGRATION_6_7, MIGRATION_7_8, MIGRATION_8_9,
+        MIGRATION_1_2, MIGRATION_2_3, MIGRATION_3_4, MIGRATION_4_5, MIGRATION_5_6, MIGRATION_6_7, MIGRATION_7_8, MIGRATION_8_9, MIGRATION_9_10,
     )
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiClient.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiClient.kt
index 217286a..58a1e48 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiClient.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiClient.kt
@@ -9,11 +9,17 @@ import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
 import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
 import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
+import okhttp3.MultipartBody
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.RequestBody
+import okhttp3.RequestBody.Companion.toRequestBody
 import okio.IOException
 import retrofit2.Response
 import timber.log.Timber
@@ -76,6 +82,29 @@ class ApiClient @Inject constructor(
     suspend fun syncPermissions(after: Long? = null): List<ResourcePermissionDto> =
         unwrap({ apiService.syncPermissions(after) })
 
+    /**
+     * Upload ciblé des octets d'un fichier vers son `resource_id` serveur
+     * (pipeline multipart séparé, hors outbox — cas d'usage OCR). La partie
+     * `file` est construite par l'appelant (flux SAF).
+     */
+    suspend fun uploadFile(
+        file: MultipartBody.Part,
+        resourceId: String? = null,
+        folderId: String? = null,
+    ): FileDto {
+        val resourceIdBody = resourceId?.toRequestBody("text/plain".toMediaType())
+        val folderIdBody = folderId?.toRequestBody("text/plain".toMediaType())
+        return unwrap({ apiService.uploadFile(file, resourceIdBody, folderIdBody) })
+    }
+
+    /** Soumet un job OCR serveur pour un fichier possédé. */
+    suspend fun submitOcr(fileId: String): OcrJobDto =
+        unwrap({ apiService.submitOcr(OcrSubmitDto(fileId)) })
+
+    /** Interroge un job OCR par son id (scopé au device du token). */
+    suspend fun getOcrJob(jobId: String): OcrJobDto =
+        unwrap({ apiService.getOcrJob(jobId) })
+
     private suspend fun <T> unwrap(
         call: suspend () -> Response<ApiEnvelope<T>>,
         skipUnauthorizedHandling: Boolean = false,
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiService.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiService.kt
index 966e8fd..028492c 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiService.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/ApiService.kt
@@ -6,14 +6,21 @@ import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
 import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
 import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
 import retrofit2.Response
 import retrofit2.http.Body
 import retrofit2.http.GET
+import retrofit2.http.Multipart
 import retrofit2.http.POST
+import retrofit2.http.Part
+import retrofit2.http.Path
 import retrofit2.http.Query
 
 /**
@@ -63,4 +70,30 @@ interface ApiService {
     suspend fun syncPermissions(
         @Query("after") after: Long? = null,
     ): Response<ApiEnvelope<List<ResourcePermissionDto>>>
+
+    /**
+     * Upload ciblé (multipart) : attache les octets d'un fichier SAF à son
+     * `resource_id` serveur déjà connu (créé metadata-only par l'outbox) —
+     * pipeline séparé, hors outbox, prérequis du OCR serveur. `resourceId`
+     * absent → création d'une nouvelle ressource.
+     */
+    @Multipart
+    @POST("files/upload")
+    suspend fun uploadFile(
+        @Part file: MultipartBody.Part,
+        @Part("resourceId") resourceId: RequestBody? = null,
+        @Part("folderId") folderId: RequestBody? = null,
+    ): Response<ApiEnvelope<FileDto>>
+
+    /** Soumet un job OCR serveur — `{ "fileId": "…" }` (docs/api-v1.md §5). */
+    @POST("ocr/jobs")
+    suspend fun submitOcr(
+        @Body body: OcrSubmitDto,
+    ): Response<ApiEnvelope<OcrJobDto>>
+
+    /** Interroge un job OCR — le client poll jusqu'à `done`/`failed` toutes les 3s. */
+    @GET("ocr/jobs/{id}")
+    suspend fun getOcrJob(
+        @Path("id") jobId: String,
+    ): Response<ApiEnvelope<OcrJobDto>>
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/dto/Dtos.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/dto/Dtos.kt
index 3a39ad1..d0a672a 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/dto/Dtos.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/remote/dto/Dtos.kt
@@ -129,4 +129,27 @@ data class ResourcePermissionDto(
     @Json(name = "updatedAt") val updatedAt: Long,
     @Json(name = "name") val name: String = "",
     @Json(name = "parentId") val parentId: String? = null,
+)
+
+/** Cycle d'un job OCR serveur (docs/api-v1.md §5). */
+object OcrJobStatus {
+    const val QUEUED = "queued"
+    const val PROCESSING = "processing"
+    const val DONE = "done"
+    const val FAILED = "failed"
+
+    val TERMINAL = setOf(DONE, FAILED)
+}
+
+/** Miroir de `OcrJob` (docs/api-v1.md §5) — `text`/`error` présents aux états terminaux. */
+data class OcrJobDto(
+    @Json(name = "id") val id: String,
+    @Json(name = "status") val status: String,
+    @Json(name = "text") val text: String? = null,
+    @Json(name = "error") val error: String? = null,
+)
+
+/** Requête `POST /ocr/jobs` — `{ "fileId": "…32-hex" }` (docs/api-v1.md §5). */
+data class OcrSubmitDto(
+    @Json(name = "fileId") val fileId: String,
 )
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OcrRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OcrRepository.kt
new file mode 100644
index 0000000..e7f55b0
--- /dev/null
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OcrRepository.kt
@@ -0,0 +1,103 @@
+package com.vaultdrop.mobile.data.repository
+
+import android.content.ContentResolver
+import android.content.Context
+import android.net.Uri
+import androidx.core.net.toUri
+import com.vaultdrop.mobile.data.local.dao.FileDao
+import com.vaultdrop.mobile.data.local.entity.FileEntity
+import com.vaultdrop.mobile.data.remote.ApiClient
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobStatus
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.delay
+import okhttp3.MediaType
+import okhttp3.MediaType.Companion.toMediaTypeOrNull
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
+import okio.BufferedSink
+import okio.source
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * OCR serveur (docs/api-v1.md §5) côté client.
+ *
+ * Séquence pour un fichier SAF `processed` + `local-cloud` (resource_id déjà
+ * connu du serveur via l'outbox `create_resource`) :
+ *  1. [ensurePhysical] — upload multipart **ciblé** (`resourceId`) des octets
+ *     locaux : pipeline séparé, hors outbox, qui écrit
+ *     `UPLOAD_DIR/<user>/<resource_id>.<ext>` — sans lequel le job OCR
+ *     échouerait « file not readable » ;
+ *  2. [submit] — enfile le job (status `queued`) ;
+ *  3. [poll] — interroge toutes les 3 s jusqu'à `done`/`failed` ;
+ *  4. [saveResult] — persiste l'extrait en Room (v10, `ocr_text`) pour un
+ *     réaffichage sans relance.
+ */
+@Singleton
+class OcrRepository @Inject constructor(
+    private val apiClient: ApiClient,
+    private val fileDao: FileDao,
+    @ApplicationContext private val context: Context,
+) {
+
+    /** Envoie les octets SAF vers le resource_id serveur déjà connu. */
+    suspend fun ensurePhysical(file: FileEntity) {
+        val uri = file.uri ?: return
+        val mediaType = file.mimeType?.toMediaTypeOrNull()
+        val body = SafFileRequestBody(context.contentResolver, uri, file.size, mediaType)
+        apiClient.uploadFile(
+            file = MultipartBody.Part.createFormData("file", file.name, body),
+            resourceId = file.resourceId,
+        )
+    }
+
+    /** Enfile le job OCR du fichier et renvoie son id. */
+    suspend fun submit(fileId: String): String =
+        apiClient.submitOcr(fileId).id
+
+    /**
+     * Poll toutes les 3 s (docs §5) jusqu'à l'état terminal. [onProgress] est
+     * appelé à chaque réponse du serveur (état courant exposé à l'UI).
+     */
+    suspend fun poll(jobId: String, onProgress: (OcrJobDto) -> Unit = {}): OcrJobDto {
+        while (true) {
+            val job = apiClient.getOcrJob(jobId)
+            onProgress(job)
+            if (job.status in OcrJobStatus.TERMINAL) return job
+            delay(POLL_INTERVAL_MS)
+        }
+    }
+
+    /** Persiste l'extrait OCR localement (null = texte absent → nettoyage). */
+    suspend fun saveResult(resourceId: String, text: String?) {
+        fileDao.updateOcrText(resourceId, text?.takeIf { it.isNotBlank() }, System.currentTimeMillis())
+    }
+
+    companion object {
+        const val POLL_INTERVAL_MS = 3_000L
+    }
+}
+
+/**
+ * `RequestBody` paresseux : le flux SAF est ouvert à l'écriture (multipart),
+ * jamais chargé en mémoire — les fichiers jusqu'à `MAX_FILE_SIZE_MB` restent
+ * gérables.
+ */
+private class SafFileRequestBody(
+    private val contentResolver: ContentResolver,
+    private val uri: String,
+    private val length: Long,
+    private val mediaType: MediaType?,
+) : RequestBody() {
+
+    override fun contentType(): MediaType? = mediaType
+
+    override fun contentLength(): Long = length
+
+    override fun writeTo(sink: BufferedSink) {
+        contentResolver.openInputStream(uri.toUri())?.use { stream ->
+            sink.writeAll(stream.source())
+        }
+    }
+}
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/features/ocr/OcrViewModel.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/features/ocr/OcrViewModel.kt
new file mode 100644
index 0000000..12f92a1
--- /dev/null
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/features/ocr/OcrViewModel.kt
@@ -0,0 +1,141 @@
+package com.vaultdrop.mobile.features.ocr
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.vaultdrop.mobile.R
+import com.vaultdrop.mobile.auth.TokenProvider
+import com.vaultdrop.mobile.data.local.entity.FileEntity
+import com.vaultdrop.mobile.data.remote.ApiException
+import com.vaultdrop.mobile.data.remote.dto.OcrJobStatus
+import com.vaultdrop.mobile.data.repository.OcrRepository
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import javax.inject.Inject
+
+/**
+ * OCR serveur d'un document du viewer : cela envoie les octets SAF ciblés
+ * (upload multipart hors outbox), enfile le job (`POST /ocr/jobs`), poll
+ * toutes les 3 s jusqu'à `done`/`failed` puis persiste l'extrait en Room.
+ *
+ * Single-flight par session (une seule run à la fois) ; le résultat est
+ * réaffichable sans relance via `files.ocr_text`.
+ */
+@HiltViewModel
+class OcrViewModel @Inject constructor(
+    private val ocrRepository: OcrRepository,
+    private val tokenProvider: TokenProvider,
+    @ApplicationContext private val context: Context,
+) : ViewModel() {
+
+    data class OcrUiState(
+        /** resource du job/interaction courante — permet de ne pas afficher un état obsolète. */
+        val resourceId: String? = null,
+        /** queued / processing / done / failed — null si état initial. */
+        val status: String? = null,
+        /** Texte extrait (état done). */
+        val text: String? = null,
+        /** Message d'erreur (état failed). */
+        val error: String? = null,
+        /** Un upload multipart est en cours (avant que le job serveur n'existe). */
+        val uploading: Boolean = false,
+    ) {
+        /** Une opération est en cours : spinner + pas de bouton Relancer. */
+        val running: Boolean get() = uploading || status == null ||
+            status == OcrJobStatus.QUEUED || status == OcrJobStatus.PROCESSING
+    }
+
+    private val _uiState = MutableStateFlow(OcrUiState())
+    val uiState: StateFlow<OcrUiState> = _uiState.asStateFlow()
+
+    private var activeJob: Job? = null
+
+    /** L'OCR nécessite un compte connecté (upload + token paseto). */
+    val available: Boolean get() = tokenProvider.current != null
+
+    /** Démarre (ou relance) l'extraction OCR du fichier. */
+    fun run(file: FileEntity) {
+        if (!available) {
+            _uiState.update {
+                it.copy(
+                    resourceId = file.resourceId,
+                    status = OcrJobStatus.FAILED,
+                    error = context.getString(R.string.ocr_requires_login),
+                )
+            }
+            return
+        }
+        if (activeJob?.isActive == true) return
+
+        _uiState.value = OcrUiState(resourceId = file.resourceId, uploading = true)
+        activeJob = viewModelScope.launch {
+            try {
+                ocrRepository.ensurePhysical(file)
+                val jobId = ocrRepository.submit(file.resourceId)
+                val final = ocrRepository.poll(jobId) { job ->
+                    _uiState.update {
+                        it.copy(
+                            resourceId = file.resourceId,
+                            uploading = false,
+                            status = job.status,
+                        )
+                    }
+                }
+                if (final.status == OcrJobStatus.DONE) {
+                    ocrRepository.saveResult(file.resourceId, final.text)
+                    _uiState.update {
+                        it.copy(
+                            resourceId = file.resourceId,
+                            uploading = false,
+                            status = OcrJobStatus.DONE,
+                            text = final.text?.takeIf { it.isNotBlank() }
+                                ?: context.getString(R.string.ocr_empty),
+                        )
+                    }
+                } else {
+                    _uiState.update {
+                        it.copy(
+                            resourceId = file.resourceId,
+                            uploading = false,
+                            status = OcrJobStatus.FAILED,
+                            error = final.error
+                                ?: context.getString(R.string.ocr_error_generic),
+                        )
+                    }
+                }
+            } catch (e: ApiException) {
+                Timber.w(e, "ocr: job failed (%s)", e.code)
+                _uiState.update {
+                    it.copy(
+                        resourceId = file.resourceId,
+                        uploading = false,
+                        status = OcrJobStatus.FAILED,
+                        error = context.getString(R.string.ocr_error_generic),
+                    )
+                }
+            } catch (e: Exception) {
+                Timber.w(e, "ocr: unexpected failure")
+                _uiState.update {
+                    it.copy(
+                        resourceId = file.resourceId,
+                        uploading = false,
+                        status = OcrJobStatus.FAILED,
+                        error = context.getString(R.string.ocr_error_generic),
+                    )
+                }
+            }
+        }
+    }
+
+    /** Réinitialise l'état — appeler au changement de document affiché. */
+    fun reset() {
+        _uiState.value = OcrUiState()
+    }
+}
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/document/DocumentViewerScreen.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/document/DocumentViewerScreen.kt
index 30cc303..5c441ae 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/document/DocumentViewerScreen.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/document/DocumentViewerScreen.kt
@@ -16,16 +16,22 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
+import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.selection.SelectionContainer
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.DocumentScanner
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -38,6 +44,7 @@ import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
@@ -71,8 +78,11 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.vaultdrop.mobile.R
 import com.vaultdrop.mobile.data.local.entity.FileEntity
+import com.vaultdrop.mobile.data.local.entity.FileStatus
+import com.vaultdrop.mobile.data.remote.dto.OcrJobStatus
 import com.vaultdrop.mobile.domain.FileCategory
 import com.vaultdrop.mobile.features.connection.ConnectionStatusViewModel
+import com.vaultdrop.mobile.features.ocr.OcrViewModel
 import com.vaultdrop.mobile.features.saf.FileDeleter
 import com.vaultdrop.mobile.features.sync.SyncViewModel
 import com.vaultdrop.mobile.ui.components.DeleteConfirmDialog
@@ -107,10 +117,12 @@ fun DocumentViewerScreen(
     onBack: () -> Unit,
     connectionStatusViewModel: ConnectionStatusViewModel,
     syncViewModel: SyncViewModel,
+    ocrViewModel: OcrViewModel = hiltViewModel(),
     viewModel: DocumentViewerViewModel = hiltViewModel(),
 ) {
     val documents by viewModel.documents.collectAsStateWithLifecycle()
     val viewerState by viewModel.uiState.collectAsStateWithLifecycle()
+    val ocrState by ocrViewModel.uiState.collectAsStateWithLifecycle()
     val connectionStatus by connectionStatusViewModel.status.collectAsStateWithLifecycle()
     val pagerState = rememberPagerState(pageCount = { documents.size })
 
@@ -131,6 +143,18 @@ fun DocumentViewerScreen(
 
     val currentFile = documents.getOrNull(pagerState.currentPage)
 
+    // OCR : réinitialise l'état (et referme la fenêtre) quand le document
+    // affiché change — une run en cours continue en arrière-plan (single-flight
+    // dans le OcrViewModel) et persiste son résultat.
+    var showOcrDialog by rememberSaveable { mutableStateOf(false) }
+    LaunchedEffect(currentFile?.resourceId) {
+        ocrViewModel.reset()
+        showOcrDialog = false
+    }
+    // Le bouton n'apparaît que pour un document gardé, présent à la fois en
+    // local et connu du serveur (`local-cloud`) — et un compte connecté.
+    val ocrCanRun = currentFile != null && currentFile.canOcr() && ocrViewModel.available
+
     val context = LocalContext.current
     val snackbarHostState = remember { SnackbarHostState() }
     val scope = rememberCoroutineScope()
@@ -255,6 +279,7 @@ fun DocumentViewerScreen(
                 // ou supprimer un document en attente de review, ou supprimer
                 // (local / cloud / les deux) un document déjà traité.
                 if (current != null) {
+                    val hasOcr = current.ocrText != null
                     DocumentActionBar(
                         file = current,
                         busy = viewerState.busy,
@@ -263,6 +288,14 @@ fun DocumentViewerScreen(
                             pendingDeleteMode = mode
                             showDeleteConfirm = true
                         },
+                        onOcr = if (ocrCanRun || hasOcr) {
+                            {
+                                if (!hasOcr) ocrViewModel.run(current)
+                                showOcrDialog = true
+                            }
+                        } else {
+                            null
+                        },
                         modifier = Modifier.fillMaxWidth(),
                     )
                 }
@@ -286,6 +319,16 @@ fun DocumentViewerScreen(
             },
         )
     }
+
+    if (showOcrDialog && currentFile != null && (ocrCanRun || currentFile.ocrText != null)) {
+        OcrResultDialog(
+            file = currentFile,
+            state = ocrState,
+            canRetry = ocrCanRun,
+            onRetry = { ocrViewModel.run(currentFile) },
+            onDismiss = { showOcrDialog = false },
+        )
+    }
 }
 
 /**
@@ -521,6 +564,7 @@ private fun DocumentActionBar(
     busy: Boolean,
     onKeep: () -> Unit,
     onDeleteModeSelected: (FileDeleter.DeleteMode) -> Unit,
+    onOcr: (() -> Unit)? = null,
     modifier: Modifier = Modifier,
 ) {
     val pendingReview = !file.processed && file.uri != null
@@ -569,16 +613,141 @@ private fun DocumentActionBar(
                     )
                 }
             } else {
-                DocumentDeleteMenu(
-                    file = file,
-                    enabled = !busy,
-                    onModeSelected = onDeleteModeSelected,
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceEvenly,
+                ) {
+                    if (onOcr != null) {
+                        DocumentOcrButton(
+                            label = if (file.ocrText != null) R.string.ocr_open else R.string.ocr_action,
+                            enabled = !busy,
+                            onClick = onOcr,
+                        )
+                    }
+                    DocumentDeleteMenu(
+                        file = file,
+                        enabled = !busy,
+                        onModeSelected = onDeleteModeSelected,
+                    )
+                }
+            }
+        }
+    }
+}
+
+/** Bouton « OCR » — même gabarit que le menu Supprimer (Surface 88×48). */
+@Composable
+private fun DocumentOcrButton(
+    label: Int,
+    enabled: Boolean,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val tint = if (enabled) MaterialTheme.colorScheme.primary
+    else MaterialTheme.colorScheme.onSurfaceVariant
+
+    Surface(
+        onClick = { if (enabled) onClick() },
+        enabled = enabled,
+        shape = RoundedCornerShape(20.dp),
+        color = if (enabled) MaterialTheme.colorScheme.primaryContainer
+        else MaterialTheme.colorScheme.surfaceVariant,
+        modifier = modifier,
+    ) {
+        Box(
+            modifier = Modifier.size(width = 88.dp, height = 48.dp),
+            contentAlignment = Alignment.Center,
+        ) {
+            Row(verticalAlignment = Alignment.CenterVertically) {
+                Icon(
+                    imageVector = Icons.Filled.DocumentScanner,
+                    contentDescription = null,
+                    tint = tint,
+                    modifier = Modifier.size(20.dp),
+                )
+                Text(
+                    text = stringResource(label),
+                    color = tint,
+                    fontSize = 11.sp,
+                    maxLines = 1,
+                    fontWeight = FontWeight.Bold,
                 )
             }
         }
     }
 }
 
+/**
+ * Fenêtre OCR : progression (upload → queued → processing), texte extrait
+ * (sélectionnable) ou erreur. Le bouton « Relancer » est proposé dès que le
+ * job est terminal (done/failed) et que l'OCR reste possible.
+ */
+@Composable
+private fun OcrResultDialog(
+    file: FileEntity,
+    state: OcrViewModel.OcrUiState,
+    canRetry: Boolean,
+    onRetry: () -> Unit,
+    onDismiss: () -> Unit,
+) {
+    val active = state.resourceId == file.resourceId
+    val running = active && state.running
+    val failed = !running && active && state.status == OcrJobStatus.FAILED
+    val text = if (running || failed) null else (state.text ?: file.ocrText)
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(stringResource(R.string.ocr_dialog_title)) },
+        text = {
+            when {
+                running -> Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                    CircularProgressIndicator(modifier = Modifier.size(40.dp))
+                    Spacer(Modifier.height(16.dp))
+                    Text(
+                        text = stringResource(when (state.status) {
+                            OcrJobStatus.QUEUED -> R.string.ocr_queued
+                            OcrJobStatus.PROCESSING -> R.string.ocr_processing
+                            else -> R.string.ocr_sending
+                        }),
+                        style = MaterialTheme.typography.bodyMedium,
+                    )
+                }
+
+                failed -> Text(
+                    text = state.error ?: stringResource(R.string.ocr_error_generic),
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.error,
+                )
+
+                text != null -> SelectionContainer {
+                    Text(
+                        text = text,
+                        style = MaterialTheme.typography.bodyMedium,
+                        modifier = Modifier.verticalScroll(rememberScrollState()),
+                    )
+                }
+
+                else -> Text(
+                    text = stringResource(R.string.ocr_empty),
+                    style = MaterialTheme.typography.bodyMedium,
+                )
+            }
+        },
+        confirmButton = {
+            TextButton(onClick = onDismiss) {
+                Text(stringResource(R.string.ocr_close))
+            }
+        },
+        dismissButton = {
+            if (canRetry && !running) {
+                TextButton(onClick = onRetry) {
+                    Text(stringResource(R.string.ocr_retry))
+                }
+            }
+        },
+    )
+}
+
 /** Bouton rond d'action (garder / supprimer), style mode review mais compact. */
 @Composable
 private fun DocumentActionButton(
@@ -729,6 +898,15 @@ private fun fileTypeLabel(file: FileEntity): String =
 private fun FileEntity.canFocus(): Boolean =
     uri != null && categoryValue() in FOCUS_CATEGORIES
 
+/**
+ * Vrai si le fichier est prêt pour l'OCR serveur : copie physique locale ET
+ * déjà connue du serveur (`create_resource` appliqué → `local-cloud`). Un
+ * fichier encore `local` (ou non traité) n'a pas de resource_id côté serveur
+ * sur lequel attacher les octets.
+ */
+private fun FileEntity.canOcr(): Boolean =
+    uri != null && processed && syncStatus == FileStatus.LOCAL_CLOUD
+
 private val FOCUS_CATEGORIES = setOf(FileCategory.PDF, FileCategory.IMAGE, FileCategory.TEXT)
 
 /** Résolution de rendu PDF en fonction du zoom : re-rendu par paliers pour rester net. */
diff --git a/mobile-kotlin/app/src/main/res/values/strings.xml b/mobile-kotlin/app/src/main/res/values/strings.xml
index 7f107a4..34ef304 100644
--- a/mobile-kotlin/app/src/main/res/values/strings.xml
+++ b/mobile-kotlin/app/src/main/res/values/strings.xml
@@ -84,6 +84,19 @@
     <string name="document_cannot_read">Impossible de lire ce document.</string>
     <string name="document_page_unreadable">Page illisible</string>
 
+    <!-- OCR serveur -->
+    <string name="ocr_action">OCR</string>
+    <string name="ocr_open">Voir l\'extrait OCR</string>
+    <string name="ocr_dialog_title">Extrait OCR</string>
+    <string name="ocr_sending">Envoi du fichier au serveur…</string>
+    <string name="ocr_queued">En file d\'attente…</string>
+    <string name="ocr_processing">Analyse en cours…</string>
+    <string name="ocr_empty">Aucun texte extrait.</string>
+    <string name="ocr_error_generic">Impossible d\'extraire le texte.</string>
+    <string name="ocr_requires_login">Connecte-toi pour utiliser l\'OCR.</string>
+    <string name="ocr_close">Fermer</string>
+    <string name="ocr_retry">Relancer</string>
+
     <!-- Navigation -->
     <string name="nav_files">Fichiers</string>
     <string name="nav_search">Recherche</string>
diff --git a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/FolderMergeDataTest.kt b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/FolderMergeDataTest.kt
index 4774525..3882302 100644
--- a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/FolderMergeDataTest.kt
+++ b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/FolderMergeDataTest.kt
@@ -20,6 +20,8 @@ import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
 import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
 import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
@@ -27,6 +29,8 @@ import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
 import com.vaultdrop.mobile.domain.DeviceIdentity
 import com.vaultdrop.mobile.domain.GenerateId
 import kotlinx.coroutines.test.runTest
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
 import org.junit.After
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
@@ -206,4 +210,18 @@ private class FolderMergeApiService : ApiService {
         after: Long?,
     ): Response<ApiEnvelope<List<ResourcePermissionDto>>> =
         Response.success(ApiEnvelope(data = emptyList()))
+
+    override suspend fun uploadFile(
+        file: MultipartBody.Part,
+        resourceId: RequestBody?,
+        folderId: RequestBody?,
+    ): Response<ApiEnvelope<FileDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun submitOcr(
+        body: OcrSubmitDto,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun getOcrJob(
+        jobId: String,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/MoveProtectionTest.kt b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/MoveProtectionTest.kt
index 2b109b8..1fd3858 100644
--- a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/MoveProtectionTest.kt
+++ b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/MoveProtectionTest.kt
@@ -21,12 +21,16 @@ import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
 import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
 import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
 import com.vaultdrop.mobile.domain.GenerateId
 import kotlinx.coroutines.test.runTest
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
 import org.junit.After
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
@@ -293,4 +297,18 @@ private class MoveProtectionApiService : ApiService {
         after: Long?,
     ): Response<ApiEnvelope<List<ResourcePermissionDto>>> =
         Response.success(ApiEnvelope(data = emptyList()))
+
+    override suspend fun uploadFile(
+        file: MultipartBody.Part,
+        resourceId: RequestBody?,
+        folderId: RequestBody?,
+    ): Response<ApiEnvelope<FileDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun submitOcr(
+        body: OcrSubmitDto,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun getOcrJob(
+        jobId: String,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/OcrRepositoryTest.kt b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/OcrRepositoryTest.kt
new file mode 100644
index 0000000..bed5c01
--- /dev/null
+++ b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/OcrRepositoryTest.kt
@@ -0,0 +1,215 @@
+package com.vaultdrop.mobile.data.repository
+
+import android.content.Context
+import androidx.core.net.toUri
+import androidx.room.Room
+import androidx.test.core.app.ApplicationProvider
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import com.vaultdrop.mobile.data.local.AppDatabase
+import com.vaultdrop.mobile.data.local.dao.FileDao
+import com.vaultdrop.mobile.data.local.entity.FileEntity
+import com.vaultdrop.mobile.data.local.entity.FileStatus
+import com.vaultdrop.mobile.data.remote.ApiClient
+import com.vaultdrop.mobile.data.remote.ApiService
+import com.vaultdrop.mobile.data.remote.dto.ApiEnvelope
+import com.vaultdrop.mobile.data.remote.dto.DeviceRegistrationDto
+import com.vaultdrop.mobile.data.remote.dto.FileDto
+import com.vaultdrop.mobile.data.remote.dto.FolderDto
+import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
+import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobStatus
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
+import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
+import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
+import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
+import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
+import kotlinx.coroutines.test.runTest
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.Shadows.shadowOf
+import org.robolectric.annotation.Config
+import retrofit2.Response
+import java.io.ByteArrayInputStream
+import kotlinx.coroutines.runBlocking
+
+/**
+ * Pipeline OCR local : l'upload multipart ciblé envoie les octets du flux SAF
+ * (sans les garder en RAM), `submit`/`poll` drainent le job jusqu'à `done`, et
+ * `saveResult` persiste l'extrait sur la ligne du fichier.
+ */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [34])
+class OcrRepositoryTest {
+
+    private lateinit var context: Context
+    private lateinit var db: AppDatabase
+    private lateinit var fileDao: FileDao
+    private lateinit var apiService: OcrApiServiceFake
+    private lateinit var repository: OcrRepository
+
+    @Before
+    fun setUp() {
+        context = ApplicationProvider.getApplicationContext<Context>()
+        db = Room.inMemoryDatabaseBuilder(context, AppDatabase::class.java)
+            .allowMainThreadQueries()
+            .build()
+        fileDao = db.fileDao()
+        apiService = OcrApiServiceFake()
+        repository = OcrRepository(ApiClient(apiService, moshi()), fileDao, context)
+    }
+
+    @After
+    fun tearDown() {
+        db.close()
+    }
+
+    @Test
+    fun `ensurePhysical_uptown_les_octets_saf_puis_flow_vers_une_ligne_persistée`() = runTest {
+        val uri = "content://ocr/sample.txt"
+        val sampleBytes = "bonjour monde".toByteArray()
+        val resolver = context.contentResolver
+        shadowOf(resolver).registerInputStream(uri.toUri(), ByteArrayInputStream(sampleBytes))
+
+        val file = insertFile(uri)
+        apiService.jobSequence = listOf(
+            OcrJobDto(id = "job-abc", status = OcrJobStatus.QUEUED),
+            OcrJobDto(id = "job-abc", status = OcrJobStatus.PROCESSING),
+            OcrJobDto(id = "job-abc", status = OcrJobStatus.DONE, text = "bonjour monde"),
+        )
+
+        repository.ensurePhysical(file)
+        assertEquals(1, apiService.uploadedFiles.size)
+        assertEquals(file.resourceId, apiService.uploadedFiles.single().first)
+        assertEquals("bonjour monde", apiService.uploadedBytes)
+
+        val jobId = repository.submit(file.resourceId)
+        assertEquals("job-abc", jobId)
+
+        var seen: List<String> = emptyList()
+        val final = repository.poll(jobId) { seen += it.status }
+        assertEquals(OcrJobStatus.DONE, final.status)
+        assertEquals(listOf(OcrJobStatus.QUEUED, OcrJobStatus.PROCESSING, OcrJobStatus.DONE), seen)
+
+        repository.saveResult(file.resourceId, final.text)
+        val stored = fileDao.getByResourceId(file.resourceId)
+        assertEquals("bonjour monde", stored?.ocrText)
+    }
+
+    @Test
+    fun `poll_stop_sur_un_job_failed_et_remonte_lerreur`() = runTest {
+        apiService.jobSequence = listOf(
+            OcrJobDto(id = "job-err", status = OcrJobStatus.QUEUED),
+            OcrJobDto(id = "job-err", status = OcrJobStatus.FAILED, error = "boom"),
+        )
+
+        val final = repository.poll("job-err") { }
+
+        assertEquals(OcrJobStatus.FAILED, final.status)
+        assertEquals("boom", final.error)
+    }
+
+    private fun insertFile(uri: String): FileEntity {
+        val file = FileEntity(
+            resourceId = "aabbccddeeff11223344556677889900",
+            uri = uri,
+            name = "sample.txt",
+            folderResourceId = "f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0",
+            extension = "txt",
+            size = 13L,
+            mimeType = "text/plain",
+            exists = 1,
+            syncStatus = FileStatus.LOCAL_CLOUD,
+            processed = true,
+            addedAt = 1_700_000_000_000L,
+            updatedAt = 1_700_000_000_000L,
+        )
+        runBlocking { fileDao.upsert(file) }
+        return file
+    }
+
+    private fun moshi(): Moshi =
+        Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
+}
+
+/**
+ * Fake `ApiService` dédié OCR : enregistre les uploads multipart et joue une
+ * séquence pré-programmée de statuts de job (poll successif).
+ */
+private class OcrApiServiceFake : ApiService {
+    var uploadedFiles: MutableList<Pair<String?, RequestBody?>> = mutableListOf()
+    var uploadedBytes: String? = null
+    var jobSequence: List<OcrJobDto> = emptyList()
+    private var getCalls = 0
+
+    override suspend fun listFolders(): Response<ApiEnvelope<List<FolderDto>>> =
+        Response.success(ApiEnvelope(data = emptyList()))
+
+    override suspend fun listFiles(
+        folderId: String?,
+        page: Int?,
+        pageSize: Int?,
+    ): Response<ApiEnvelope<List<FileDto>>> = Response.success(ApiEnvelope(data = emptyList()))
+
+    override suspend fun registerDevice(
+        body: DeviceRegistrationDto,
+    ): Response<ApiEnvelope<DeviceRegistrationDto>> =
+        Response.success(ApiEnvelope(data = body))
+
+    override suspend fun login(
+        body: LoginRequestDto,
+    ): Response<ApiEnvelope<LoginResponseDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun syncOps(
+        body: SyncOpsRequest,
+    ): Response<ApiEnvelope<SyncOpsResult>> =
+        Response.success(ApiEnvelope(data = SyncOpsResult(applied = 0)))
+
+    override suspend fun resolveUser(
+        username: String,
+    ): Response<ApiEnvelope<ResolvedUserDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun syncPermissions(
+        after: Long?,
+    ): Response<ApiEnvelope<List<ResourcePermissionDto>>> =
+        Response.success(ApiEnvelope(data = emptyList()))
+
+    override suspend fun uploadFile(
+        file: MultipartBody.Part,
+        resourceId: RequestBody?,
+        folderId: RequestBody?,
+    ): Response<ApiEnvelope<FileDto>> {
+        uploadedFiles += resourceId?.let { readBody(it) } to resourceId
+        val buffer = okio.Buffer()
+        file.body.writeTo(buffer)
+        uploadedBytes = buffer.readUtf8()
+        return Response.success(ApiEnvelope(data = FileDto(id = "aabbccddeeff11223344556677889900", name = "sample.txt", size = 13L)))
+    }
+
+    override suspend fun submitOcr(
+        body: OcrSubmitDto,
+    ): Response<ApiEnvelope<OcrJobDto>> =
+        Response.success(ApiEnvelope(data = OcrJobDto(id = "job-abc", status = OcrJobStatus.QUEUED)))
+
+    override suspend fun getOcrJob(
+        jobId: String,
+    ): Response<ApiEnvelope<OcrJobDto>> {
+        val job = jobSequence[getCalls.coerceAtMost(jobSequence.lastIndex)]
+        getCalls++
+        return Response.success(ApiEnvelope(data = job))
+    }
+
+    private fun readBody(body: RequestBody): String {
+        val buffer = okio.Buffer()
+        body.writeTo(buffer)
+        return buffer.readUtf8()
+    }
+}
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/ShareRepositoryTest.kt b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/ShareRepositoryTest.kt
index 87b9694..7ae115a 100644
--- a/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/ShareRepositoryTest.kt
+++ b/mobile-kotlin/app/src/test/java/com/vaultdrop/mobile/data/repository/ShareRepositoryTest.kt
@@ -20,6 +20,8 @@ import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.data.remote.dto.LoginRequestDto
 import com.vaultdrop.mobile.data.remote.dto.LoginResponseDto
+import com.vaultdrop.mobile.data.remote.dto.OcrJobDto
+import com.vaultdrop.mobile.data.remote.dto.OcrSubmitDto
 import com.vaultdrop.mobile.data.remote.dto.ResolvedUserDto
 import com.vaultdrop.mobile.data.remote.dto.ResourcePermissionDto
 import com.vaultdrop.mobile.data.remote.dto.SyncOpsRequest
@@ -27,6 +29,8 @@ import com.vaultdrop.mobile.data.remote.dto.SyncOpsResult
 import com.vaultdrop.mobile.domain.DeviceIdentity
 import com.vaultdrop.mobile.domain.GenerateId
 import kotlinx.coroutines.test.runTest
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
 import org.junit.After
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
@@ -250,4 +254,18 @@ private class FakeApiService : ApiService {
         after: Long?,
     ): Response<ApiEnvelope<List<ResourcePermissionDto>>> =
         Response.success(ApiEnvelope(data = permissions))
+
+    override suspend fun uploadFile(
+        file: MultipartBody.Part,
+        resourceId: RequestBody?,
+        folderId: RequestBody?,
+    ): Response<ApiEnvelope<FileDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun submitOcr(
+        body: OcrSubmitDto,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
+
+    override suspend fun getOcrJob(
+        jobId: String,
+    ): Response<ApiEnvelope<OcrJobDto>> = Response.success(ApiEnvelope())
 }
\ No newline at end of file