Replace Pixels in JPG
Replace individual pixels by exact coordinate or color match. 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 Replace Pixels in JPG
- 1. Upload your JPG. Drop the photo you want to edit into the input pane. The tool will locate pixels either by color or by exact coordinate, depending on the mode you choose.
- 2. Choose how to match pixels. Set Match pixels by to Color or Coordinate. Color mode uses Color to replace, New color and Tolerance (%) together, while Coordinate mode targets a single pixel at X coordinate and Y coordinate.
- 3. Set the replacement values. In color mode, pick New color to swap in for every match, such as replacing #ffffff with #000000. In coordinate mode, the pixel at that exact position is set to the new color.
- 4. Download the edited JPG. Click process and download the result. Every matching pixel now shows the new color while the rest of the photo remains unchanged.
When to use Replace Pixels in JPG
Replace Pixels in JPG swaps out pixels matching a color or an exact coordinate for a new color, giving direct pixel-level control over a photo. Use it whenever you need to recolor a specific region or a specific shade without opening a full editor.
- Recoloring a flat-colored background. A photo has a solid-colored backdrop, and repainting white pixels to black by color match changes the whole background in one pass without touching the subject.
- Fixing a single stray pixel. A known bad pixel or artifact sits at a specific coordinate in an image, and switching to Coordinate mode lets you correct that one pixel precisely.
- Testing pixel-level image processing. You are building or testing software that reads pixel data, and need a controlled test image where specific colors or coordinates were deliberately altered to known values.
Examples
Repaint white pixels black
Input
photo.jpg + replace #ffffff with #000000
Output
photo.jpg with whitish pixels repainted black
Repaint one pixel
Input
photo.jpg + coordinate (10, 20)
Output
photo.jpg with the pixel at (10, 20) recolored
About the Replace Pixels in JPG tool
Replace Pixels in JPG runs as plain JavaScript in your browser tab, with no server behind it. Replace individual pixels by exact coordinate or color match. 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 6 settings, including Match pixels by, Color to replace, New color and Tolerance (%), 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. 2 worked examples further down the page show exactly what the tool produces for real inputs.
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
Is Replace Pixels in JPG free to use?
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?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Replace Pixels in JPG 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?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
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.