Image Blur / Mosaic - Blur or Pixelate Full Images and Regions - Master Tools

A free online image blur and mosaic tool with no sign-up required. Batch process JPG, PNG, and WebP images locally in your browser to redact full images or selected regions with no server upload, keeping your files private. Ideal for hiding faces, license plates, account details, chat screenshots, and sensitive visual information.

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Image Blur / Mosaic - Blur or Pixelate Full Images and Regions
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A free online image blur and mosaic tool with no sign-up required. Batch process JPG, PNG, and WebP images locally in your browser to redact full images or selected regions with no server upload, keeping your files private. Ideal for hiding faces, license plates, account details, chat screenshots, and sensitive visual information.

Features

Browser-local Processing
Batch Image Redaction
Blur and Mosaic
Multi-rectangle Region Editor
Multi-format Export
ZIP Download
+1 more features

Usage Examples

What this tool helps with

A free online image blur and mosaic tool with no sign-up required. Batch process JPG, PNG, and WebP images locally in your browser to redact full images or selected regions with no server upload, keeping your files private. Ideal for hiding faces, license plates, account details, chat screenshots, and sensitive visual information.

Recommended workflow

  1. 1Upload images - Drop multiple images into the upload area or click to select files
  2. 2Choose effect - Select blur or mosaic and tune the strength
  3. 3Choose regions - Use a default region or open an image editor to add multiple rectangles
  4. 4Process locally - Generate processed images in your browser
  5. 5Preview or download - Enlarge previews, download one file, or export a ZIP

Capability details

  • Local processing - Images never leave your device
  • Multi-region editing - Save multiple rectangular regions per image
  • Region presets - Supports whole image, top, bottom, left, right, and bottom-right
  • Format control - Keep source format or export JPEG, PNG, and WebP
  • Safe naming - Duplicate source names get sequence suffixes to avoid ZIP overwrites

Practical use cases

  • Privacy covering - Hide faces, license plates, addresses, or ID numbers
  • Screenshot sharing - Cover sensitive fields before sharing with a team
  • Asset publishing - Blur local details before publishing visuals
  • Batch archiving - Process many images that need redaction

Privacy, rights, and limits

Most processing is designed to run in the browser whenever possible, which makes the tool useful for quick personal or work files. For sensitive, production, or regulated material, test with a sample first and confirm the target platform's format, size, and quality requirements.

Common questions

Are my images uploaded to a server?

No. Image reading, region editing, blur/mosaic processing, and export all happen locally in your browser.

Can one image have multiple mosaic regions?

Yes. Open the region editor, add multiple rectangles, and save. That image will use its custom regions first.

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