configurable upload limits

backend/main.py

@@ -224,6 +224,12 @@ app.add_middleware(
 DEMO_MODE = os.getenv('DEMO_MODE', 'false').lower() in ('true', '1', 'yes')
 ALREADY_DONATED = os.getenv('ALREADY_DONATED', 'false').lower() in ('true', '1', 'yes')
 
+# Upload size limits (in MB) - configurable via environment variables
+UPLOAD_MAX_IMAGE_MB = int(os.getenv('UPLOAD_MAX_IMAGE_MB', '10'))
+UPLOAD_MAX_AUDIO_MB = int(os.getenv('UPLOAD_MAX_AUDIO_MB', '50'))
+UPLOAD_MAX_VIDEO_MB = int(os.getenv('UPLOAD_MAX_VIDEO_MB', '100'))
+UPLOAD_MAX_PDF_MB = int(os.getenv('UPLOAD_MAX_PDF_MB', '20'))
+
 if DEMO_MODE:
     # Enable rate limiting for demo deployments
     limiter = Limiter(key_func=get_remote_address, default_limits=["200/hour"])
@@ -656,14 +662,14 @@ async def upload_media(request: Request, file: UploadFile = File(...), note_path
         # Validate file size - different limits for different types
         media_type = get_media_type(file.filename) if file.filename else None
         
-        # Size limits: images 10MB, audio 50MB, video 100MB, PDF 20MB
+        # Size limits (configurable via UPLOAD_MAX_*_MB environment variables)
         size_limits = {
-            'image': 10 * 1024 * 1024,
-            'audio': 50 * 1024 * 1024,
-            'video': 100 * 1024 * 1024,
-            'document': 20 * 1024 * 1024,
+            'image': UPLOAD_MAX_IMAGE_MB * 1024 * 1024,
+            'audio': UPLOAD_MAX_AUDIO_MB * 1024 * 1024,
+            'video': UPLOAD_MAX_VIDEO_MB * 1024 * 1024,
+            'document': UPLOAD_MAX_PDF_MB * 1024 * 1024,
         }
-        max_size = size_limits.get(media_type, 10 * 1024 * 1024)
+        max_size = size_limits.get(media_type, UPLOAD_MAX_IMAGE_MB * 1024 * 1024)
         
         if len(file_data) > max_size:
             raise HTTPException(

documentation/ENVIRONMENT_VARIABLES.md

@@ -47,6 +47,26 @@ AUTHENTICATION_PASSWORD=mysecretpassword
 >
 > Haven't donated yet? [☕ Buy me a coffee](https://ko-fi.com/gamosoft) - it takes 30 seconds and makes my day!
 
+### Upload Limits
+
+| Variable | Type | Default | Description |
+|----------|------|---------|-------------|
+| `UPLOAD_MAX_IMAGE_MB` | integer | `10` | Maximum image upload size in MB |
+| `UPLOAD_MAX_AUDIO_MB` | integer | `50` | Maximum audio upload size in MB |
+| `UPLOAD_MAX_VIDEO_MB` | integer | `100` | Maximum video upload size in MB |
+| `UPLOAD_MAX_PDF_MB` | integer | `20` | Maximum PDF upload size in MB |
+
+#### Example: Allowing larger video uploads
+
+```bash
+# Docker
+docker run -e UPLOAD_MAX_VIDEO_MB=500 ...
+
+# Docker Compose
+environment:
+  - UPLOAD_MAX_VIDEO_MB=500
+```
+
 ## 🎯 Configuration Priority
 
 Configuration is loaded in this order (later overrides earlier):

documentation/FEATURES.md

@@ -17,10 +17,10 @@
 ### Media Support
 - **Drag & drop upload** - Drop files from your file system directly into the editor
 - **Clipboard paste** - Paste images from clipboard with Ctrl+V
-- **Images** - JPG, PNG, GIF, WebP (max 10MB)
-- **Audio** - MP3, WAV, OGG, M4A (max 50MB)
-- **Video** - MP4, WebM, MOV, AVI (max 100MB)
-- **Documents** - PDF (max 20MB)
+- **Images** - JPG, PNG, GIF, WebP (default max 10MB, configurable)
+- **Audio** - MP3, WAV, OGG, M4A (default max 50MB, configurable)
+- **Video** - MP4, WebM, MOV, AVI (default max 100MB, configurable)
+- **Documents** - PDF (default max 20MB, configurable)
 - **In-app viewing** - View all media types directly in the sidebar
 - **Inline preview** - Audio/video players and PDF viewer embedded in notes