BlurImg · Redact & Watermark
Local mosaic, blur, watermark
Only for Mac
$0.99
Mac
A native macOS tool to quickly redact sensitive parts of screenshots, add watermarks, and batch-export. 100% local. Zero tracking. Integrates with Finder Services.
BlurImg is a native macOS tool for redacting and watermarking screenshots in seconds.
WHY BLURIMG
• 100% local processing — your images never leave your Mac
• Zero analytics, zero network calls, zero third-party SDKs
• Polished dark UI built for creators and developers
• Integrates with the macOS Finder Services menu
FEATURES
▸ Two-mode mosaic
• Rectangle drag-to-select
• Brush stroke with adjustable radius
• Per-image strength
▸ Gaussian blur
• Same rectangle / brush modes
• Independent radius
• Stackable with mosaic
▸ Text watermark
• Font, size, color, opacity
• Three placement modes:
- Anchor: 5-corner grid + edge padding
- Free: tap on canvas to position
- Tiled: spacing + rotation, anti-screenshot
• Multi-line support
▸ Watermark presets
• Save any config as a named preset
• Persist across launches
• Visual card-style preset manager
▸ Batch processing
• Sidebar checkboxes, select-all / clear / remove
• One-click apply current watermark or mosaic strength to all checked images
▸ Flexible export
• Three modes: overwrite / suffix in same folder / save to chosen folder
• Naming template: {name}, {index}, {date}, {ext}
• Real-time output size estimate (sampled bytes/pixel)
• PNG, JPEG, HEIC formats with adjustable quality
▸ Undo / Redo
• Standard ⌘Z / ⇧⌘Z
• 50-step history
▸ Finder Services integration
• Right-click any image in Finder → Services → BlurImg
KEYBOARD SHORTCUTS
- ⌘O Open
- ⌘E Export
- ⌘K Command palette
- ⌘Z / ⇧⌘Z Undo / Redo
- M / D / W Mosaic / Blur / Watermark
- R / B Rectangle / Brush sub-tool
- ⌘ + scroll Zoom
- ⌘0 Fit to window
- ⌘1 Actual size
REQUIREMENTS
- macOS 13 Ventura or later
- Universal: Apple Silicon and Intel Mac
PRIVACY
BlurImg runs entirely locally. We do not collect, transmit, or share any data. See the support page for full privacy policy.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A quality and stability update. All existing features are unchanged:
• Smoother on large images: no stalls or dropped frames when brushing or adjusting mosaic / blur strength on 24 MP+ photos
• Better batch control: batch export now shows progress and can be cancelled mid-run (already-exported files are kept)
• Steadier memory: importing many high-resolution images no longer grows memory without bound
• Honest export: in Overwrite mode, format / quality controls are clearly disabled and annotated instead of being silently ignored
• Safer data: a non-blocking banner lists files that fail to restore instead of vanishing; mosaic / blur strength changes are now undoable and redoable
• More complete compliance: privacy manifest and localization
Thanks for using BlurImg.
The developer, 军 陈, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 军 陈
- Size
- 1.1 MB
- Category
- Graphics & Design
- Compatibility
Requires macOS 13.0 or later.
- Mac
Requires macOS 13.0 or later.
- Mac
- Languages
English and 9 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 JUN CHEN
