.JXL File Extension

.JXL File Extension

File Type

JPEG XL Image

Developer Joint Photographic Experts Group
Popularity
3.8  |  5 Votes
Category Raster Image Files
Format Binary

What is a JXL file?

A JXL file is an image saved in the JPEG XL file format, which was developed by the Joint Photographic Experts Group (JPEG). It contains a photo, illustration, screenshot, or other image that has been compressed using JPEG XL compression. The JXL file format is an update to the .JPG and .JPEG file formats.

More Information

In the 2010s and early 2020s, a number of organizations responded to the proliferation of Internet-enabled smart devices and responsive web design by introducing new image file formats optimized for web-based display and delivery. For example, the Alliance for Open Media introduced the .AVIF file format, and JPEG introduced the JXL file format.

JXL images are saved using JPEG XL compression, which is an iteration of JPEG compression. According to JPEG's website, JPEG XL "is particularly optimized for responsive web environments, so that content renders well on a wide range of devices." JPEG XL compression allows users to save higher-quality images in smaller-sized files than those produced using JPEG compression. The JPEG XL standard also supports animation, alpha channels, layers, thumbnails, and lossless coding. Most importantly, in contrast to AVIF, .WEBP, and .HEIF images, JXL images can be decoded using progressive decoding, which allows web browsers to show low-quality preview images to users before fully decoding a JXL file.

How do I open a JXL file?

Because the JXL file format is not yet finalized, most image viewing applications cannot currently open JXL files. However, you can convert a JXL file to a normal JPG or PNG file using MConverter (Web). Then, you can open the JPG or PNG file using any image viewing application, such as:

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Programs that open JXL files

Web
Updated February 8, 2021

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