On-device mosaic rendering
Pixelation is computed locally via Canvas. Your photo stays on your device from upload to export.
Pixelate a photo
mosaic faces and text, free
Apply a pixel mosaic to any area of a photo without uploading it. RedactPix detects faces and sensitive text on-device, draws pixelation boxes, and exports a clean PNG — all in your browser.
Drop image here or paste a screenshot
JPG · PNG · WEBP — up to 20 MB · No upload, no account
- No upload
- No account
- Local AI scan
- Free
Why use RedactPix to pixelate photo?
AI-assisted detection
Scan finds faces and private text (emails, phone numbers, IDs). Each match gets a pixelation box — review and adjust in seconds.
Adjustable pixel block size
Slide from fine 8px blocks to chunky 48px squares. Every box can have a different setting.
How to pixelate photo — step by step
From raw image to safely redacted file in four steps.
Step 01
Open your photo
Upload or drag a JPG/PNG/WEBP file. Or paste from clipboard.
Step 02
Scan or draw
Click Scan for AI face/text detection. Or manually drag boxes over areas you want pixelated.
Step 03
Choose Mosaic and adjust
Pick Mosaic from the toolbar, then adjust block size. Preview instantly.
Step 04
Export
Download a flattened PNG with metadata stripped. No watermark.
Frequently asked questions
What photo formats are supported?
JPG, PNG, and WEBP up to 20 MB with no side longer than 6000 pixels.
Can I pixelate only part of a photo?
Yes. Draw boxes only over the areas you want pixelated. The rest of the photo remains untouched.
Is pixelating a photo the same as blurring?
Pixelation replaces a region with large blocky pixels; blur smooths the area with a Gaussian effect. Both obscure detail. Pixelation with large blocks is generally harder to reverse.