Pixelate Image
Apply a blocky mosaic pixelate effect to any photo — adjust block size from fine to chunky. Free, instant, and private — nothing is uploaded.
Drop an image here, click to browse, or paste
Supports JPG, PNG, WebP, GIF, HEIC, and more
Related tools
Everything you need to pixelate an image online
Adjustable block size
Slide from a fine 4px mosaic that still hints at the underlying shape to a chunky 40px block size that makes the original content unrecognizable.
100% private — no upload
Your image never leaves your device. Pixelating runs entirely in your browser using the Canvas API. No server, no cloud, no data stored.
Instant results
Canvas-based rendering completes in under a second for most images. No waiting for server processing or file transfers.
Works on any device
Fully responsive — pixelate a photo on desktop, tablet, or mobile without installing anything.
Multiple export formats
Save your pixelated image as PNG (lossless), JPG, or WebP. Adjust JPEG/WebP quality from 60% to 100% to balance file size and sharpness.
Also does a smooth blur
Need a soft Gaussian blur instead of a blocky mosaic? Switch the Effect toggle to Blur without leaving the page — both effects share the same tool.
Three steps to a pixelated image
- 1
Upload your image
Drag and drop an image onto the page, click to browse, or paste from your clipboard. Supports JPG, PNG, WebP, GIF, BMP, TIFF, and HEIC.
- 2
Adjust the block size
Drag the pixel size slider from 4px (a fine mosaic) to 40px (chunky, unrecognizable blocks). The live preview updates instantly.
- 3
Download your image
Download the result as PNG, JPG, or WebP. Everything runs in your browser — nothing is uploaded to a server.
Built for anyone who works with images
Whether you are redacting sensitive data in a screenshot, going for a retro pixel-art look, or blocking out a face or logo — PixelTools pixelates your image in seconds with no upload required.
Redact sensitive information
Pixelate faces, license plates, email addresses, or any private detail before sharing a screenshot or photo publicly — the classic censor-block look.
Retro / 8-bit style effects
Turn a photo into a chunky, low-resolution mosaic for a deliberate retro-game or glitch-art aesthetic.
Thumbnails and previews
Create a pixelated placeholder or blurred-out preview thumbnail that reveals itself only after a click or purchase.
Social media and memes
Add a pixelated censor bar over text, logos, or faces in images you're posting or sharing for comedic or privacy effect.
Frequently asked questions
Is the pixelate image tool free?
+
Yes, completely free with no limits. Pixelate as many images as you want. No subscription, no account, no watermark.
Does pixelating an image upload it to a server?
+
No. PixelTools pixelates images entirely in your browser using the Canvas API. Your image never leaves your device — no upload, no cloud processing, no data retained.
What pixel size should I use?
+
For a fine mosaic that still hints at the underlying shape, use 4–12px. For strong, unrecognizable redaction of faces, plates, or text, use 20–40px. The live preview lets you judge before you download.
Can I pixelate a photo instead of an image file?
+
Yes — this tool works with any photo you upload, in JPG, PNG, WebP, GIF, BMP, TIFF, or HEIC/HEIF (iPhone photo) format.
Can I pixelate only part of an image, like just a face?
+
This tool pixelates the entire image. To automatically detect and pixelate or blur just faces, use PixelTools' dedicated Blur Face tool instead.
What's the difference between pixelate and blur?
+
Pixelate breaks the image into blocky mosaic squares — the classic censor-block look used to redact faces, plates, or documents. Blur applies a smooth Gaussian softening instead. Both run entirely in your browser; switch between them with the Effect toggle above the slider.
Will pixelating reduce my image quality?
+
Pixelating itself transforms the pixels — that is the intended effect. If you export as PNG, the container is lossless so no additional quality loss is introduced. If you export as JPG or WebP, use a high quality setting (90%+) to avoid extra compression artifacts.
Can I use the pixelated image commercially?
+
PixelTools does not claim any rights over images you process. The pixelated output is your file to use however you like. Intellectual property rights in the original image are not affected by using our tool.
Pixelate your image now
Free, instant, no account needed.
Start pixelating →