Convert JPEG to QOI
Re-encode a JPEG in the Quite OK Image format. 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 Convert JPEG to QOI
- 1. Add the JPEG to re-encode. Drop in the photo you want stored in the Quite OK Image format, a simple lossless format designed to be fast to encode and decode.
- 2. Let the tool encode it. The tool decodes the JPEG's pixels and writes them out losslessly using QOI's compact run-length and pixel-difference scheme. There are no settings to configure.
- 3. Download the QOI file. The tool produces photo.qoi with every pixel preserved exactly. Download it for use in a project, game engine or tool that supports the QOI format.
When to use Convert JPEG to QOI
Convert JPEG to QOI re-encodes a photo's decoded pixels losslessly in the Quite OK Image format, a lightweight alternative designed for fast, simple encoding and decoding without JPEG's lossy artifacts. It suits developers working with QOI-aware software or experimenting with the format directly.
- Testing a QOI decoder you are building. You are implementing QOI support in a game engine or graphics library and need real test files. Converting a photo to QOI gives you a genuine sample to decode and validate against.
- Avoiding lossy artifacts in a small graphics project. A hobby project wants lossless image storage without the complexity or file size of PNG. Converting a photo to QOI gives a simpler, comparably efficient lossless alternative.
- Benchmarking QOI against other formats. You want to compare encode and decode speed or file size between JPEG, PNG and QOI for the same source image. Converting a photo to QOI gives you that comparison point.
- Preparing assets for a QOI-native game engine. A lightweight game engine reads textures directly in QOI format for its speed advantages. Converting your source photos to QOI gets them ready for that pipeline.
Examples
Lossless QOI copy
Input
photo.jpg
Output
photo.qoi (losslessly re-encoded pixels)
About the Convert JPEG to QOI tool
Convert JPEG to QOI does its work locally, right in the browser. Re-encode a JPEG in the Quite OK Image format. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the JPG Tools collection on EditSafely, a set of 145 small, focused JPG utilities that share the same instant, private workspace.
There is nothing to configure. Provide the input and the result appears on its own. 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
Is Convert JPEG to QOI 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 Convert JPEG to QOI 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.