Posterize Image
Reduce an image to flat poster-style colors.
Posterize Image is a free, browser-based tool on Toolery. Reduce an image to flat poster-style colors. Everything runs locally on your device, so it's fast and completely private — no uploads, no queues, and no sign-up to try it.
Posterize Image — FAQ
Is Posterize Image free to use?
Yes. Posterize Image is completely free on Toolery — no watermarks and no sign-up required to try it.
Is Posterize Image private — do my files stay on my device?
Yes. Posterize Image runs entirely in your browser. Your files and input are processed on your own device and never uploaded to a server, so nothing is stored, seen, or shared.
How do I use Posterize Image?
Reduce an image to flat poster-style colors. Open the tool, add your file or input, and get the result instantly — it all happens on your device.
Does Posterize Image reduce image quality?
Posterize Image preserves as much quality as the format allows and gives you control where it applies. It works on your original file directly in the browser, so there's no extra loss from uploading and re-downloading.