What Is JPEG XL, and Should You Use It in 2026?

You may have run into a .jxl file that simply won’t open, or seen JPEG XL mentioned as “the future of image formats.” Both are fair. JPEG XL is genuinely impressive technology whose adoption has been unusually bumpy. Here is the practical picture as of 2026.

What JPEG XL is

JPEG XL (file extension .jxl) is a modern image format designed to replace JPEG, PNG, and GIF with a single format. Its headline features:

Smaller files at the same quality — typically 20–60% smaller than JPEG for comparable visual quality.
Lossless mode — like PNG, but with much smaller files.
Lossless JPEG transcoding — an existing JPEG can be repacked as JXL about 20% smaller, and turned back into the exact original JPEG. No quality is lost either way.
Modern capabilities — high bit depth, wide color gamut, HDR, animation, and progressive decoding.

In short, it aims to do everything the old formats do, but better.

The adoption rollercoaster

JPEG XL’s problem has never been the technology — it has been browser support.

Google Chrome added JXL behind an experimental flag, then removed it in 2023, citing insufficient ecosystem interest, which frustrated many.
Apple then added JPEG XL support to Safari (from iOS 17 / macOS Sonoma), giving it a major mainstream browser.
Through 2025–2026 momentum shifted again, and Chromium re-introduced JXL work, with default support expected to widen during 2026.

The result today: Safari displays JXL, most other browsers still need a flag or don’t support it by default. That is exactly why you often have to convert .jxl files to open or share them.

Should you use JPEG XL right now?

Use JXL when:

You control both ends (e.g. archiving your own photo library) and want smaller files without quality loss.
You are on Apple platforms where Safari shows JXL natively.
You want to losslessly shrink a pile of existing JPEGs for storage.

Stick with JPG/PNG/WebP when:

You are publishing images for a general audience on the web — you cannot yet assume the viewer’s browser supports JXL.
You are sharing a file with someone and don’t know what they’ll open it with.

Working with JXL files today

Because support is uneven, the practical workflow is conversion:

Can’t open a .jxl? Convert it to JPG or PNG with our JPEG XL converter — it decodes the file in your browser and saves it in a format that opens everywhere.
Want to shrink your images? The same converter can encode your JPG/PNG photos into JXL.

Everything runs locally in your browser, so your images stay on your device.

The bottom line

JPEG XL is a better format that arrived into an awkward support landscape. In 2026 it is genuinely useful for personal archiving and on Apple platforms, while JPG and WebP remain the safe choice for the open web. Until support is universal, a quick JXL converter bridges the gap.