JPEG XL Community Site
Industry-leading image compression & fidelity
Smaller Files, Higher Quality, Faster Downloads.
Unmatched in quality-per-byte, JPEG XL delivers best-of-breed image compression from web quality through lossless.
JPEG XL is a new international standard (ISO/IEC 18181) created by
the JPEG committee.
This website is a resource by and for the wider community of enthusiasts who want to promote this new standard.
More information can also be found on the official JPEG XL page.
JPEG XL is…
Up to 55% Smaller Than JPEG
JPEG
JPEG XL
Image Title
JPEG Info:
Quality: 82
Size: 2.0 KB
BPP: 2.0
JXL Info:
Distance: 9, Effort: 7
Size: 2.0 KB
BPP: 2.0
Size:
SSIMU2: 99.9
Size:
SSIMU2: 99.9
SSIMU2 SCORE:
300 KB
SSIMU2 SCORE:
290 KB
Up to 25% Smaller Than AVIF
AVIF
JPEG XL
Image Title
AVIF Info:
Quality: 82
Size: 2.0 KB
BPP: 2.0
JXL Info:
Distance: 9, Effort: 7
Size: 2.0 KB
BPP: 2.0
Size:
SSIMU2: 99.9
Size:
SSIMU2: 99.9
SSIMU2 SCORE:
300 KB
SSIMU2 SCORE:
290 KB
Visually Lossless Compression
Faithful High-Fidelity
JPEG
JPEG XL
SIZE:
SIZE:
Say goodbye to JPEG artifacts and WebP’s inconsistent results. When quality matters, make it indistinguishable from the original at a fraction of the size — automatically. JPEG XL is visually lossless at less than half the bits-per-pixel of JPEG.
Lossless Compression
Pixel-Perfect Reproduction, Tiny Footprint
WEBP
15%
Larger
PNG
46%
Larger
AVIF
63%
Larger
BMP
75%
Larger
Unlike its predecessors, JPEG XL delivers best-of-breed lossless compression making pixel-precision smaller than ever — at up to 32 bits per channel. It handily beats WebP on complex content without the 8-bit and size limitations. AVIF? Not even close.
Lossless JPEG Transcoding
Old-School to New-School — and Back
JPEG
JPEG XL
SIZE:
SIZE:
Transcode existing JPEGs to JPEG XL for an average 20% savings. Plus, it’s reversible. Restore original JPEGs with minimal computation — so fast you can do it on the fly.
Wide-Gamut & HDR
Stunning Color Accuracy
Your phone and displays have supported wide-gamut and HDR for years — shouldn’t your file format too? JPEG XL is specifically designed to handle the rich colors of high-precision, high-dynamic range images.
Progressive Image Delivery
Responsive By Design
With JPEG XL’s state-of-the-art progressive encoding and decoding, you’ll see an image sooner than with other formats — with as little as 15% of the image loaded. It supports both saliency progression (visually important areas of the image delivered first) and reordering (middle data sent first).
Fast Encoding & Decoding
Save and Load Without Waiting
Nobody likes progress bars. JPEG XL is designed to be blink-of-an-eye fast on today’s systems — no special hardware required. When comparing image size versus encoding speed, JPEG XL wins hands down for high quality and lossless photo-like content.
Capture Through Delivery
One Format, Endless Possibilities
JPEG XL is the first format to offer optimal performance throughout the entire creative workflow, from capture in high bit-depth, HDR, and wide-gamut formats, through editing, web, and print delivery. Because of its industry-leading lossless and lossy compression, JPEG XL provides the most versatile and efficient solution — something AVIF can’t do.
Environmental Impact
If all current JPEGs were delivered as JPEG XLs (with an average 20% decrease in file size), we could save:
4.87
GWh
(gigawatt-hours)
per day
Equivalent to powering 487,000 average US homes for an hour and saving 3,500 metric tons of CO2 emissions per day.
And Much More
CMYK & Print Support
JPEG XL streamlines image authoring with features like layer support, up to 4099 channels for selection masks and spot colors, and CMYK compatibility for print-oriented use cases. It’s an ideal format for all creative workflows.
High Bit Depth Support
Up to 32 bits per channel for higher precision image representation, enabling more accurate color reproduction — octillions instead of millions of colors. Perfect for applications that demand the highest fidelity and realism in visual content.
Fully FOSS
Royalty-free and open-source (FOSS) with a BSD-3 license, JPEG XL’s libjxl reference implementation is production-ready, efficient, and robust.
With continuous performance updates, you can use it confidently in your apps and platform.
Future-Proof
JPEG XL is a future-proof format designed to outlast its predecessors. With no inherent limitations on image size or color precision, its flexible framework allows the addition of new features and functionality seamlessly and gradually — over time, as needed.
Automatic Visual Fidelity Targeting
No more JPEG or WebP quality roulette! JPEG XL lets you target visual fidelity, not cryptic parameters. It defaults to visually lossless output, ensuring consistent results without the need for trial and error.
Photographic & Non-Photographic Images
While best-in-class for compressing photographic images, JPEG XL is even better at efficiently compressing and storing non-photographic (synthetic) images such as graphics, illustrations, and digital art.
Joint Photographic Experts Group (JPEG)
Building the Future of Image Standards
JPEG XL was created by the JPEG committee. The committee’s work ensures that JPEG XL meets the highest standards of performance, efficiency, and compatibility, benefiting users across various industries and applications. Learn more about the JPEG Committee’s work and their other projects at their official website: jpeg.org.
Want to contribute to this website? Make a pull request!
Site designed by Fractional Xperience.
This is an unofficial, community-maintained website.
Visit the official JPEG Committee JPEG XL site.
Access to the archived version of this site.
