Images
What is a JXL file?
Updated Jul 2026
JXL (JPEG XL) is a newer image format built to replace JPG with better compression and more features, including transparency, animation, and both lossy and lossless modes. It can shrink files noticeably without visible quality loss. The main limitation is that most browsers, phones, and photo apps still don't open it.
- Extension
- .jxl
- Type
- Images
- Typically
- Emerging web format
- Compression
- Lossy
- Transparency
- Supported
Why JXL exists
JPEG XL was developed by the same standards group behind the original JPEG, as a modern successor meant to fix that format's age. It was finalized around 2021 and designed to handle everything from small web icons to large photos with a wide range of color and brightness.
In plain terms, it compresses images more efficiently than JPG or PNG, so a JXL file can look the same while taking up less space. It also supports things older formats struggle with, like transparent backgrounds, multi-frame animation, and lossless compression when you don't want to lose any detail at all.
The problem is adoption. Support has been inconsistent across browsers and operating systems, with some dropping early support and others adding it late. So people run into JXL files from a camera, an app, or a download, then find their browser or photo viewer won't open them and they need to convert to JPG or PNG instead.
The trade-offs
Strengths
- Smaller files than JPG or PNG at similar quality
- Supports transparency and animation in one format
- Can compress losslessly when you need exact detail kept
- Handles a wider range of color and brightness than older formats
Watch-outs
- Not supported by default in most web browsers
- Many phones, photo apps, and editors can't open it yet
- Usually needs converting before you can view or share it widely
A note on privacy
Like other photo formats, a JXL file can carry embedded metadata such as camera details and location data if it came from a phone or camera. Uploading it to a browser-based converter sends that file and its metadata to someone else's server. Converting it on your own machine keeps the image and anything attached to it local.
Questions
How do I open a JXL file?
Support depends on your browser and operating system, and many still don't handle it by default. The most reliable option is to convert it to JPG or PNG, which open everywhere.
Is JXL better than JPG?
For compression and features, generally yes: JXL packs images into smaller files and supports transparency and animation that JPG can't. For compatibility, JPG still wins by a wide margin.
Why did my camera or app save a JXL file?
Some newer cameras, screenshot tools, and apps have started offering JXL as an output option because of its smaller file sizes. If your other devices can't open it, you can switch that setting or convert the files after the fact.
Can I convert JXL without uploading it?
Yes. A desktop app like Morphjet converts JXL files on your own computer, so the image and any metadata it carries never leave your machine.
Morphjet opens and converts JXL and 1,800+ other formats, all on your own computer. Launching this July.