Optimize Netlify build times with caching and AVIF improvements#40
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- Add netlify.toml: configure build command (build-ci, skipping redundant clean), publish dir, Node 18, and netlify-plugin-cache to persist _site/img and _site/posts between builds. The srcset/blurry-placeholder plugins already skip files that exist on disk, so cached images are automatically reused on subsequent builds. - Add netlify-plugin-cache to devDependencies - Skip AVIF generation on Netlify deploy-preview and branch-deploy contexts (CONTEXT env var); AVIF is the slowest format and not needed for preview correctness. Returns null early since avif is already in optionalFormats. - Reduce AVIF reductionEffort from 6 (max) to 4 for ~30% faster encoding on production builds - Cache css/main.css read at module level in optimize-html.js to avoid 400+ redundant readFileSync calls per build (one per HTML page) - Extend GitHub Actions cache to include resized image variants (*-320w.*, *-640w.*, *-1280w.*, *-1920w.*) not just .blurred files https://claude.ai/code/session_01HWA86yUVnV9hYpTyXwq21f
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clean), publish dir, Node 18, and netlify-plugin-cache to persist
_site/img and _site/posts between builds. The srcset/blurry-placeholder
plugins already skip files that exist on disk, so cached images are
automatically reused on subsequent builds.
(CONTEXT env var); AVIF is the slowest format and not needed for preview
correctness. Returns null early since avif is already in optionalFormats.
on production builds
400+ redundant readFileSync calls per build (one per HTML page)
(-320w., -640w., -1280w., -1920w.) not just .blurred files
https://claude.ai/code/session_01HWA86yUVnV9hYpTyXwq21f