publish-crop has emitted AVIF for cropped placements since it was written, and `render()` has returned
<picture> sources for them. The older derived ladder — which serves every UNCROPPED photograph, every
square thumbnail and every video poster — was WebP only. This closes that, so the site has one answer
about what formats it ships rather than two.
Measured on a 256px gallery thumbnail, from the master, no generation loss: 18,186 bytes as WebP at
quality 74, 14,381 as AVIF at matched quality. Around 20% on every photograph, which is the reason to
build a second file per rung — not the seven kilobytes it happens to save on one page.
The two quality numbers are publish-crop's own, so the site encodes one format pair rather than two
opinions about what AVIF is worth.
Not for a drawing. `lossless` is chosen by prefersLossless for line art, where WebP's lossless mode
beats any lossy encoder — the note there records a logo whose lossy rung came out two and a half times
the size of the original. AVIF is a second lossy answer to a question already settled, so it is not
asked, and those ladders carry no sources and render exactly as they did.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
pastilhasandClaude Opus 5
307a7d665a