Serve a PNG Open Graph image so link previews render#106
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The site's og:image pointed at og.svg, but no major platform renders an SVG Open Graph image — Reddit, X, Facebook, LinkedIn, Slack, Discord and iMessage all ignore it and fall back to a generic placeholder, which is why the recent Reddit post showed a blank globe instead of a preview. Rasterize og.svg into a 1200x630 og.png and point the meta tags at it, adding og:image:type/width/height/alt and twitter:image:alt. og.svg stays the editable source of truth; a small script renders the PNG with vendored Geist + Fira Code TTFs (loaded explicitly so the output is deterministic and on-brand regardless of the build machine's fonts). Run `pnpm --filter web og` after editing og.svg to regenerate.
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Problem
Sharing the site on Reddit (and elsewhere) showed no preview — just a generic globe placeholder. The cause:
og:imagepointed atog.svg, and no major platform renders an SVG Open Graph image. Reddit, X/Twitter, Facebook, LinkedIn, Slack, Discord and iMessage all ignore an SVGog:imageand fall back to a placeholder, so shared links looked broken.Fix
og.svginto a 1200×630og.pngand point the meta tags at it.og:image:type,og:image:width,og:image:height,og:image:altandtwitter:image:altfor a more reliable, richer preview.og.svgas the editable source of truth; a small script (sites/web/scripts/generate-og.mjs) renders the PNG with vendored Geist + Fira Code TTFs, loaded explicitly so the output is deterministic and on-brand regardless of the build machine's installed fonts (resvg renders no text at all when it can't resolve a font).Regenerate after editing
og.svg:Verification
astro buildpasses andog.pngis emitted todist.tsc -b).