QOI to JPG converter
A free QOI to JPG converter for Quite OK Image Format files. Browser-based pairs here usually run in this tab, with no file upload.
Drop your QOI files here
or browse your device · paste with Ctrl+V
Accepts .qoi files. You can queue several files; each is processed one after another on your own device.
Your files never leave this device — there is no upload and no server to delete them from.
- 01
Add your QOI files
Drop them onto the box above or click to browse. They are read straight from disk — nothing is sent anywhere.
- 02
Check the settings
JPG is already selected. Open the gear icon on any row if you want to change quality, dimensions or codec before converting.
- 03
Download your JPG
Press convert and wait for the row to finish. Convert several files and you can take them all as a single ZIP.
QOI
Quite OK Image FormatA lossless format whose entire specification fits on one page, encoding and decoding many times faster than PNG for a small size penalty. A favourite in game engines and hobby projects.
- Developed by
- Dominic Szablewski
- Released
- 2021
- Extension
- .qoi
- MIME type
- image/qoi
- Compression
- Lossless
- Specification
- Open
JPG
JPEGThirty years on, still the default for photographs. Its lossy compression discards detail the eye barely notices, and quality 75–85 is the sweet spot where files shrink dramatically without visible damage. No transparency support.
- Developed by
- Joint Photographic Experts Group
- Released
- 1992
- Extension
- .jpg, .jpeg, .jpe, .jfif
- MIME type
- image/jpeg
- Compression
- Lossy
- Specification
- Open
- QOI is lossless and JPG is lossy. This direction discards some information in the encode step. In practice, many files look identical at default settings, but this is a one-way loss. Keep the QOI source if you might need a perfect copy later.
- QOI supports a transparent background and JPG does not, so any transparency in the source is flattened onto a solid background during the conversion.
Questions about converting QOI to JPG
Is this QOI to JPG converter free?
Yes. Converting QOI to JPG here is free, with no account, no watermark and no daily quota. The work runs on your own device, so there is no server cost to pass on to you.
Is my QOI file uploaded anywhere?
For browser-based pairs, your file is read locally and converted by Squoosh in this tab. No file payload is uploaded; you may still see analytics and engine downloads in network logs.
Is there a file-size limit for QOI to JPG?
There is no imposed upload cap when it runs in-browser, but each conversion still depends on your device and browser memory. Large videos are the first practical limit, then memory-heavy documents or images.
Does converting QOI to JPG lose quality?
JPG is a lossy format, so some detail is discarded when it is encoded. At the default quality setting the change is often not visually obvious; keep your original QOI file if you might need it again.
Can I convert several QOI files to JPG at once?
Yes. Drop in several files and each gets its own row; they are processed one after another on your device. You can download them one by one or as one ZIP.
Does QOI to JPG work on a phone, Mac or Chromebook?
Most modern browsers on Windows, macOS, Linux, ChromeOS, Android and iOS work. Very large videos are often more reliable on desktop or a browser with more memory.
Why do some conversions take longer on first run?
The conversion engine has to download first. Small codec bundles are fast, while ffmpeg is commonly 12–30 MB; later conversions of similar type use the cached engine.
I converted a file and the output is blank or unusable. What should I check?
Start over with default settings, then change one option at a time (quality, bitrate, page size, or codec) to isolate what changed behavior. If it keeps failing, retry with a smaller file and confirm the source format matches the pair.
Convert other formats to JPG
16 formats can become JPG here.
Convert QOI to other formats
A QOI file can become any of these.
JPG to QOI
The reverse conversion
PDF to JPG
PNG to JPG
WEBP to JPG
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