Posterize an Image
Posterize any image by snapping each color channel to just a few evenly spaced levels, which collapses smooth gradients into flat bands for a screen-printed poster look. Drag the Levels slider to choose how many tones to keep, watch the preview update instantly, then download the result at full resolution. Everything runs in your browser, so the image never leaves your device.
How to posterize an image
- Drop an image in, or click to browse.
- Drag the Levels slider to set how many tones each color keeps (fewer levels means a stronger effect).
- Pick an output format and download the posterized image.
Examples
Turn a photo into poster art
A color photo with Levels set to 4
A bold, banded version with flat blocks of color
Frequently asked questions
What does posterizing an image do?
It reduces each color channel to a small number of evenly spaced levels. Smooth gradients collapse into flat bands of color, giving the look of a screen-printed poster or vintage comic.
What does the Levels slider control?
Levels is how many distinct tones each red, green, and blue channel can take. Lower values (like 2 to 4) give a bold, blocky effect, while higher values keep more of the original detail.
Is my image uploaded anywhere?
No. All posterizing runs in your browser on the raw pixels. The image never leaves your device, so private photos stay private.
Does the preview match the download?
Yes. The preview uses the exact same pixel math as the export, just on a smaller copy for speed. The downloaded file is processed at full resolution.
Will it change the file type?
Only if you choose to. You can export as PNG (lossless), JPEG, or WebP regardless of the input format. Transparency is preserved when you export as PNG or WebP.
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