Reduce image colors
Posterize photos down to a bold few colors. Nothing is uploaded.
- Your files are never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Drop your images here
Images · up to 10 files, 100 MB each
or paste with Ctrl+VLive preview
Settings
Fewer levels means flatter, more graphic colors per channel.
PNG keeps every shade exactly. JPG and WebP use the quality below.
Used for JPG and WebP only. PNG is always saved losslessly.
How it works
Add your images
Choose up to 10 images — JPG, PNG, WebP, GIF, BMP, AVIF or HEIC — straight from your device.
Tune the effect
Choose 2–8 color levels: fewer is bolder, more stays faithful.
Download the result
Preview each filtered copy, then save them one by one or all together as a ZIP.
Fewer colors, more style
Posterize snaps each color channel to a handful of levels, so smooth photos collapse into bold graphic shapes. Four levels give a retro game feel; two give stark propaganda punch.
Illustrators use this to plan palettes, trace shapes and build screen-print separations. Run it on busy photos to discover the three or four colors that truly matter.
Dialing the levels
Start at four and move down for drama or up for fidelity. Faces need more levels than landscapes to stay recognizable, so portraits deserve five or six.
Flat areas may band into visible steps; that is the aesthetic, not a bug. Follow with the noise tool if you want to break bands with subtle grain.
Palettes stay personal
Level reduction executes entirely within your browser's image pipeline. Photos of your home, kids or prototypes are quantized locally and never auditioned on a server.
There is no history panel and no recent-files list. Each visit starts fresh, processes your batch, and forgets everything the moment you navigate away.
Questions
Are my images uploaded when I use this?
No. Everything runs inside your browser on your own device. Your files are never sent to us or to anyone else.
What do the levels mean?
Each color channel is snapped to that many shades: at 4, reds, greens and blues each keep 4 steps, which mixes into a compact retro palette.
Which photos suit this best?
Bold subjects with clear shapes — portraits, signage, street scenes — while soft foggy landscapes can turn muddy, so preview before committing.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
Related tools
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