Reduce JPG Colors
Quantize a JPG down to a fixed number of colors for stylized or compact images. 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 JPG Colors
- 1. Upload the JPG picture to quantize. Drop or browse for the .jpg or .jpeg file you want to simplify. It loads into the preview so you can compare the original against the reduced-color result.
- 2. Set Number of colors and toggle Dither. Enter how many colors should remain in Number of colors: fewer colors gives a bolder poster look. Turn on Dither to smooth banding in gradients at the cost of a slightly grainy texture.
- 3. Download the repainted photo. The tool rebuilds the image using only the palette you chose. Download the result once the level of stylization matches what you were going for.
When to use Reduce JPG Colors
Reduce JPG Colors quantizes a photo down to a small, fixed palette, turning smooth photographic gradients into flatter, more graphic bands of color. It suits stylized output and small file sizes rather than photographic accuracy.
- Creating a retro poster effect. A band promo photo gets quantized to eight colors to produce a bold, screen-print-style poster look instead of a realistic photograph.
- Preparing artwork for limited-palette displays. An image destined for an e-ink display or a device with a small color palette gets reduced to match the hardware's actual color capability before conversion.
- Shrinking file size for a simple graphic. A flat-looking product shot with mostly solid colors gets its palette reduced to 16 colors, cutting file size further than quality adjustment alone would.
- Testing how a design reads with fewer colors. A designer reduces a mockup photo to four colors to check whether the composition still reads clearly at a glance, without fine gradient detail to lean on.
Examples
Poster effect
Input
photo.jpg + 8 colors
Output
photo.jpg repainted using only its 8 dominant colors
About the Reduce JPG Colors tool
Reduce JPG Colors runs as plain JavaScript in your browser tab, with no server behind it. Quantize a JPG down to a fixed number of colors for stylized or compact images. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's JPG Tools section, 145 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Number of colors and Dither (smoother gradients), and the result refreshes the moment you change one. 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.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Reduce JPG 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 JPG Colors accept?
It accepts JPG and JPEG photos. 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.