Reduce Number of Image Colors
Quantize an image down to a fixed number of its dominant colors for a stylized look. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Reduce Number of Image Colors
- 1. Load the photo to quantize. Add any image file. It's read as pixel data locally, so you can preview the color reduction before saving anything.
- 2. Set the Number of colors. Enter how many dominant colors the output should keep, such as 8 or 16. Fewer colors give a bolder, more graphic poster look; more colors stay closer to the original photo.
- 3. Save the quantized image. Download the repainted file once the palette matches what you're after. Every pixel is mapped to the nearest of the chosen colors.
When to use Reduce Number of Image Colors
Reduce Number of Image Colors quantizes a photo down to a fixed count of its most dominant colors, producing a flatter, poster-like version. It's a stylistic effect as much as a technical one, useful anywhere a limited palette reads better than full photographic detail.
- Making retro game-style art. A pixel art or retro game project wants sprites that look like they came from a limited-palette console. Quantizing a source photo to 8 or 16 colors gives that flat, blocky aesthetic instantly.
- Designing a poster from a photo. A gig poster or album cover calls for a bold, high-contrast look built from a photograph. Cutting the color count down to a handful turns a normal photo into graphic-looking artwork.
- Preparing an image for screen printing. Screen printing requires separating artwork into a small number of flat color layers. Reducing a design's colors down to the printable count previews how the final print will simplify the image.
Examples
Poster effect
Input
photo.png + 8 colors
Output
photo.png repainted with only its 8 dominant colors
About the Reduce Number of Image Colors tool
Reduce Number of Image Colors does its work locally, right in the browser. Quantize an image down to a fixed number of its dominant colors for a stylized look. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Image Tools collection on EditSafely, a set of 200 small, focused Image utilities that share the same instant, private workspace.
You can shape the output with the Number of colors setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Does Reduce Number of Image Colors cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
Which files does Reduce Number of Image Colors accept?
It accepts images in any common format (PNG, JPG, WebP, GIF and more). There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.
Related tools
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Find Image Color Palette
Extract an image's dominant colors and show them as a clean palette strip.