A web developer implementing JPEG XL support found the format's decoding performance too slow for practical web use, with large images taking 1-2 seconds to load even after optimization. Beyond performance concerns, the JPEG XL library adds significant complexity with 508 source files and many dependencies, making maintenance difficult for marginal improvements over existing formats like WebP and PNG.
WordPress powers 40.3% of all websites globally, including major publications like the New York Post, TIME, and TechCrunch, as well as institutions like NASA, Harvard, and The White House. Its dominance stems from its flexibility, allowing use cases ranging from personal blogs to enterprise publishing platforms for governments, universities, and media companies.