Photo Mosaic
Drag over faces, license plates or text you want to pixelate. Add multiple regions and save the result at the original resolution.
Choose a photo to pixelate
Your photo is processed in your current browser.
Selected photos are not uploaded to a server.
Drag over an area to pixelate
Draw a rectangle with a mouse or finger to apply the mosaic.
Drag on the photo to add an area. For keyboard editing, use the coordinate form below.
Higher values make larger squares. The same block size applies to every selected area.
Selected areas 0
- No areas selected yet.
Add an area by coordinates
Coordinates use original-image pixels. The top-left corner is X 0, Y 0.
Saves at the original dimensions. Area outlines are not included.
Add a mosaic to photos without installing software
Replace selected parts of a photo with square blocks. Load your photo, select one or more areas, check the result and download it.
How to pixelate a photo
- Choose a photo or drag it onto the upload area.
- Drag over each area you want to pixelate. You can add multiple areas.
- Adjust block size and use View original to compare the result.
- Choose PNG or JPG and download the mosaic photo.
Supported formats and limits
- Input: PNG, JPG/JPEG, WebP, GIF and BMP
- Output: PNG or JPG (transparent areas become white in JPG)
- Up to 30 MB, 10,000 pixels on each side and 24 megapixels in total
- GIF editing and export use one still frame
Frequently asked questions
Are faces detected automatically?
No. Drag over the areas you want to pixelate, or enter their coordinates.
Can I pixelate multiple areas?
Yes. You can select up to 100 areas, remove individual areas from the list, and undo or redo edits.
Can I change the mosaic size?
Yes. Set the block size from 4 to 160 pixels. Higher values make larger mosaic squares. Sizes use the original image dimensions.
How do I edit without dragging?
Open Add an area by coordinates and enter Start X, Start Y, Width and Height. Coordinates use original-image pixels from the top-left corner.
Is my original photo changed or uploaded?
No. Your original file stays unchanged and the result is saved as a new file. Loading, editing and exporting happen in your current browser.
Are outlines included or dimensions changed?
Blue area outlines are not saved. The downloaded image keeps the original pixel dimensions. JPG fills transparent areas with white.
Last updated: October 13, 2026