JPEG XL

I’m reading the recently published JPEG XL spec.

Brunsli lossless recompression system and FUIF responsive image is interesting.

So, I go on an exploration and learned a few things about JPEG XL.

• Brunsli: Practical JPEG repacker
  • Brunsli is a lossless JPEG recompression system library.
  • Brunsli allows for a 22% decrease in file size while allowing the original JPEG to be recovered byte-by-byte.
  • GOOD NEWS: now part of JPEG XL draft
• JPEG XL
  • Brunsli has been specified as the lossless JPEG transport layer in the Committee Draft of JPEG XL Image Coding System.
  • Ready to power faster and more economical transfer and storage of photographs.
  • Overview of JPEG XL
• ImageMagick
  • ImageMagick adding support for JPEG XL
  • ImageMagick is the most central “Swiss Army Knife” for imaging in the web ecosystem.
• From ImageCon 2019: “JPEG XL: Next-Generation of Image Format for the Internet” [video]
  • Presentation slides by Jon Sneyer: https://www.slideshare.net/cloudinarymarketing/imagecon-2019-jon-sneyer
  • Some context: JPEG XL is a combination of Cloudinary’s FUIF (successor of FLIF) and Google’s Pik.
    • Great HN discussion on FLIF
• Benchmark/comparison
  • A simple comparison between AV1, BPG, WebP and Pik for use in image compression (in Japanese language).
    • Pik won it. JPEG XL is an improved from Pik.
• Demo
  • Brunsli demo of JPEG XL lossless recompression .jpg ⇄ .jxl
• Tools
  • JPEGXL - JavaScript - you can encode to JPEG XL here. They compiled C/C++ code to WebAssembly.

We care for making the Internet faster.

Future of image compression with utmost respect to our digital heritage.

My take: I consider Brunsli a very promising approach as the successor of JPEG standard.