Posterize an Image
Reduce RGB tonal levels for a flat, graphic poster effect.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
Each RGB channel uses 2–32 levels. This does not limit the whole image to that many colors.
Exports a full-resolution PNG with transparency. PNG files can be larger than the original.
Original
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Set each RGB channel to 2–32 levels.
- 03
Process, inspect the preview and download PNG.
Details and tips
How it works
Each channel is rounded to its nearest evenly spaced level. Two levels per channel can produce up to eight RGB combinations, while the original alpha is preserved.
Made for everyday images
Create posterized illustrations, bold thumbnails and simplified color studies.
Frequently asked questions
Are images uploaded?
No. Processing and export happen on your device. Images are not saved to an account.
What are the limits?
Input supports JPG, PNG and WebP, up to 250 MB, 8192 px per side and 16 million pixels. Expanded output must also fit the pixel limits. Animated input is processed as a still frame.