JPEG XL converter and .jxl viewer

What is JPEG XL? JPEG XL (.jxl) is the modern successor to the classic JPEG. It produces noticeably smaller files at the same — or better — quality than JPEG, PNG and WebP, and it can shrink existing JPEGs by about 20% with no quality loss at all. Smaller files Keep the same visual quality while cutting file size, so pages load faster and storage goes further. One format, everything Lossless and lossy, photos and graphics, transparency and animation — all in a single modern format. Lossless from JPEG Re-pack your existing JPEGs to JPEG XL and recover ~20% of their size without touching quality. Want the longer answer — where the format came from, what it does that JPEG and WebP can't, and whether you should be using it yet? Read what JPEG XL is, or compare it head to head with WebP. Everything else we've written lives in the guides.