Its "competitor" is AVIF, not webp. The TLDR version is AVIF is better at low bitrates/quality, JXL is better at higher bitrates/quality. And JXL has some othe

Its "competitor" is AVIF, not webp. The TLDR version is AVIF is better at low bitrates/quality, JXL is better at higher bitrates/quality. And JXL has some other niches, like easier encoding/decoding, lossless conversion of JPEG, and support for some exotic formats that AVIF does not support. In other words, we need both.