Image Pixelate Tool
Pixelate any photo to hide faces, plates or text with adjustable mosaic blocks. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
About this tool
This tool covers a chosen area of your photo with a mosaic of square blocks, from a subtle 6px texture up to a chunky 40px grid that makes details unreadable. It's the fastest way to hide a face, a licence plate, a phone number or a screen full of confidential text before you share a screenshot. You draw a rectangle over the region that needs hiding, drag the block-size slider until the content is unreadable, and the rest of the image stays perfectly sharp. Everything runs on an HTML canvas inside your browser, so the original photo never leaves your device. JPG, PNG and WebP are all supported, and PNG exports keep any existing transparency. There's no account, no watermark and no upload limit beyond what your device's memory can handle.
How to use this tool
1. Choose an image
Pick a JPG, PNG or WebP file from your device.
2. Select the area
Draw a rectangle over the region you want pixelated.
3. Adjust block size
Drag the slider until the hidden detail is unreadable.
4. Download
Save the pixelated image straight to your device.
Why use this tool
Screenshots often contain details you don't want to publish: a face in the background, a licence plate, an email address on screen. Pixelating that one region takes seconds and keeps the rest of the picture perfectly readable, which is faster and more natural-looking than cropping the whole photo or covering it with a solid black box.
Tips & best practices
- Use a larger block size (30px+) for text you want completely unreadable.
- Zoom in before drawing the selection rectangle for more precise placement.
- Combine pixelation with cropping if the sensitive area sits at the very edge of the photo.
Common use cases
- Blurring a colleague's face before posting a team photo online
- Hiding a licence plate in a car-for-sale listing photo
- Redacting an account number in a banking app screenshot
- Obscuring a home address visible in a delivery photo
- Censoring spoilers in a game screenshot before sharing
Frequently asked questions
Can I pixelate only part of the image?
Yes, drag a rectangle over the exact area you want blurred and only that region is turned into blocks.
What block size should I use to hide a face?
Around 16-24px usually makes eyes and features unrecognisable while keeping the surrounding photo clear.
Does pixelating remove the original data permanently?
Once you export the image, the pixelated pixels replace the original ones, so the hidden detail is gone from the file.
Will the output keep transparency?
Yes, if you upload a PNG with transparent areas, the exported file keeps them intact.
Is there a limit to image size?
No hard limit is set by the tool itself; very large images are only bound by your device's available memory.
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