Private browser toolUtilities

Mosaic blur tool

Pixelate sensitive details with a local canvas workflow. Upload an image, choose full-image mosaic or a percentage-based region, pick a block-size preset for faces or text, preview the result, and download the edited file without sending it to cloud processing.

Mosaic blur an image

Browser tool

Mosaic blur tool

Runs locally in your browser. The selected image is not uploaded by this tool.

JPEG, PNG, and WebP are supported by default. Specialized converters restrict the file picker to their required input format.

Choose an image to start.

How to mosaic blur an image

Upload a photo or screenshot

Choose a browser-supported image file such as JPG, PNG, WebP, or AVIF.

Choose the mosaic area

Select Full image for a stylized pixel effect, or Region to cover a face, address, license plate, chat message, or ID detail.

Set block strength

Use smaller blocks for a visible mosaic style and larger blocks when the goal is safer redaction.

Preview and download

Review the processed result, adjust the percentage region if needed, then save the new image.

Mosaic blur features

Full image or region

Apply a mosaic effect across the whole image, or target one rectangle by entering X, Y, width, and height percentages.

Privacy-focused block presets

Start with practical block sizes for light styling, face privacy, plate or text hiding, and maximum censoring.

Local preview and export

The image is decoded, pixelated, previewed, and exported with browser File, Canvas, Blob, and object URL APIs.

After this task

After this free tool, open Ai Enhance for the next AI editing workflow.

Continue with Ai Enhance

Specifications

Input formats	Browser-supported image files
Mosaic controls	Full image or region, 2–80px block size, face/text/privacy presets
Processing	Client-side Canvas API; no cloud upload
Account required	No

Related Magic Eraser Tools

Ai Enhance

Common questions

Is the mosaic blur tool free?

Yes. You can use this browser tool without signing in.

Are my images uploaded?

No. The tool is designed to decode, pixelate, preview, and export images locally in your browser.

Which block size should I use for privacy?

Use larger blocks for sensitive content. The face privacy, plate/text hide, and maximum censor presets are faster starting points than guessing from the slider.

Can I blur only one part of the image?

Yes. Choose Region and enter X, Y, width, and height percentages to target one rectangular area.

What formats are supported?

Support depends on the image formats your browser can decode and export.

Need more AI editing?

Open Magic Eraser for object removal, background cleanup, AI Enhance, and other advanced edits.

Open Magic Eraser

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