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🟦 Image Mosaic / Blur

Drag to select any region and apply mosaic or blur. Useful for hiding faces, license plates, and personal info. Processed in-browser via Canvas API.

✅ 100% free · no signup · images are never uploaded or stored on our server

🔒 About Privacy

📂

Drag & drop, click to select, or paste an image

📖 How to Use

  1. 1
    Load an image
    Drag and drop, click to select, or paste from clipboard with Ctrl+V.
  2. 2
    Choose effect and strength
    Choose mosaic / blur / black fill. Use the slider to adjust block size.
  3. 3
    Drag a region to apply
    Drag on the image. The effect is applied to that region as soon as you release. Drag multiple times for multiple regions.
  4. 4
    Download
    Download as PNG or JPEG. Filename gets _masked suffix.

❓ FAQ

Is my image uploaded to your server?
No. All processing happens entirely in your browser via the Canvas API. Image data never leaves your device. You can verify this in the Network tab of your developer tools.
Can the mosaic be reversed?
Mosaic and blur lose information, but with low strength they can be partially recovered by AI. For sensitive info, use Black fill or strong mosaic (block size 30+).
What image formats are supported?
All formats your browser can display (PNG, JPEG, WebP, GIF, BMP, SVG, AVIF, HEIC, etc.). Output as PNG or JPEG.

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