No. All processing runs on Canvas in your browser.

What's the difference between Mosaic and Blur?

Mosaic repaints fixed-size cells with their average color (pixelation), leaving blocky edges. Blur applies a Gaussian filter so edges smear, fully hiding text and faces.

Can the blurred area be recovered?

Strong blurs are effectively irreversible. Weak blurs (small radius) can sometimes be partially recovered by machine-learning approaches — aim for at least 20px on sensitive areas.

Can I set the region in pixels?

Only percentages are supported, so the same ratio applies cleanly across different image sizes. Pixel-absolute regions are under consideration.

Can faces be detected automatically?

Face detection is not part of this tool. Pick the region manually.

Back to Image

Image pixelate / blur — hide whole image or set region

Hide sensitive areas by pixelating (mosaic) or blurring an image. Apply to the whole image or to a rectangular region you set by X / Y / width / height percentages. Everything runs on Canvas in your browser. Batch processing with a single ZIP download is supported.

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How to use

Drop images (batch supported). Pick Mosaic (cell size as % of image width) or Blur (radius in px). Choose Whole image or A region — for a region, enter X / Y / Width / Height (all percentages of the image). Click Apply to composite via Canvas, then download per file or as a single ZIP. Output keeps the source format (PNG / JPEG / WebP).

FAQ

Are images uploaded?: No. All processing runs on Canvas in your browser.
What's the difference between Mosaic and Blur?: Mosaic repaints fixed-size cells with their average color (pixelation), leaving blocky edges. Blur applies a Gaussian filter so edges smear, fully hiding text and faces.
Can the blurred area be recovered?: Strong blurs are effectively irreversible. Weak blurs (small radius) can sometimes be partially recovered by machine-learning approaches — aim for at least 20px on sensitive areas.
Can I set the region in pixels?: Only percentages are supported, so the same ratio applies cleanly across different image sizes. Pixel-absolute regions are under consideration.
Can faces be detected automatically?: Face detection is not part of this tool. Pick the region manually.

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