As of 2026-09, the version of czkawka shipped in Debian is built without
- support of JXL (JPEG-XL).
- feature "libavif"

It is disabled by patches in the Debian source packages
rust-czkawka-core, rust-czkawka-cli & rust-czkawka-gui.

Rationale can be found in the headers of the patches in theses packages.