Photo sources and derivatives (photo.png, photo.jpg, photo.webp): Fronalpstock big.jpg by Hannes Röst, via Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Fronalpstock_big.jpg https://creativecommons.org/licenses/by-sa/3.0/ https://creativecommons.org/licenses/by-sa/3.0/legalcode Derived from ../resize/fronalpstock-source.jpg (2400 x 1078, JPEG quality 92). PixTools resized it to 800 x 359, removed metadata and encoded the formats listed in measurements.json. The photo derivatives remain CC BY-SA 3.0. Neither the photographer nor Wikimedia endorses PixTools. Graphic source: graphic-source.svg, original geometric artwork by PixTools, created September 21, 2026. Its PNG/WebP/JPG derivatives and the WebP-to-JPG example are released under CC0 1.0: https://creativecommons.org/publicdomain/zero/1.0/ The SVG has transparent empty areas and a partially transparent yellow circle. Screenshot source: screenshot-source.jpg, a real 1265 x 889 Chrome capture of PixTools' WebP-to-JPG page on September 21, 2026, from local revision f5afcbe. It was resized to 800 x 562 for all three comparison encodes. It shows PixTools' interface before this guide example was added, not a generated interface mockup. The screenshot capture is JPEG. Lossless exports preserve its decoded and resized pixels; they cannot restore detail already lost in that JPEG. The screenshot is provided as a reference input for trying image conversions. Reproduction from retained source files, using the repository lockfile: pnpm install --frozen-lockfile node apps/pix-tools/scripts/generate-format-examples.mjs Node v22.22.3; sharp 0.33.5; libvips 8.15.3. Measurements, exact encoder settings and SHA-256 hashes: measurements.json. These are reference library encodes, not downloaded PixTools browser outputs. Browser encoders and encoder versions may produce different bytes or quality. No assertion of visually equal quality across formats is made.