Social-share metadata + OG image + favicon - #39
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The deployed SPA previously unfurled to a bare "Co-Scientist" title with an emoji-data-URI favicon. Since the launch is "click this link", the link preview is the funnel — this makes it unfurl properly on X, Slack, LinkedIn, iMessage, etc. frontend/index.html <head>: - description, canonical - Open Graph (type/site_name/title/description/url/image + dimensions/alt) - Twitter summary_large_image card - theme-color (light + dark via media) - real SVG favicon + apple-touch-icon links - title enriched to "Co-Scientist — tournament-ranked research hypotheses" OG/Twitter image URLs are absolute https so crawlers resolve them. frontend/public/: - og.png — real 1200x630 raster in the GEML look (paper + 28px graph grid, serif wordmark, hypotheses -> tournament -> proposal pipeline motif). Authored as an HTML card, rasterized with headless Chrome. - favicon.svg — serif "C" GEML mark with a red pipeline-node accent. - apple-touch-icon.png — 180x180, same mark. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Why
The launch is "click this link" — so the link preview is the funnel. Today the deployed SPA (
https://duckyquang.github.io/Co-Scientist/) unfurls to a bare Co-Scientist title with an emoji-data-URI favicon: no description, no Open Graph, no Twitter card, no image. This makes the link unfurl properly on X, Slack, LinkedIn, iMessage, Discord, etc.What
frontend/index.html<head>description+<link rel="canonical">og:type/site_name/title/description/url/image(+image:type/width=1200/height=630/alt)summary_large_imagecard (title/description/image/image:alt)theme-color(light#f7f9f8+ dark#101520viaprefers-color-scheme)<link rel="icon" type="image/svg+xml">+apple-touch-iconhttps://…— crawlers don't resolve relative URLs. Icon links use root-relative paths that Vite rewrites to/Co-Scientist/…under the Pages base.frontend/public/(new assets)og.png— a real 1200×630 raster in the GEML look:#f7f9f8paper with the faint 28px graph grid, big serif Co-Scientist wordmark, one-line tagline, and the pipeline motif● Hypotheses → ● Tournament → ● Proposalwith red/blue/green accent nodes, plus a footer (duckyquang.github.io/Co-Scientist· Runs free in your browser). Authored as an HTML card and rasterized with headless Chrome; verifiedPNG image data, 1200 x 630.favicon.svg— GEML mark: serif "C" on ink#1b2437with a red pipeline-node accent. Legible down to 16px.apple-touch-icon.png— 180×180, same mark.OG image preview
The card (paper + graph grid, serif wordmark, colored pipeline nodes, URL + "Runs free in your browser" footer). Rendered from the source HTML card via headless Chrome:
(GitHub renders the actual image once the branch deploys to
…/og.png.)Scope note
The SPA's static
<head>is shared by all routes, including the per-proposal microsite/s/:id/site. So every route uses this same site-level share card. Dynamic per-proposal OG images are out of scope for launch (would require SSR or prerendering) — the shared card is a fine default.Verification
GITHUB_PAGES=true npm run build:pagessucceeds.dist/index.htmlcontains every og:/twitter:/description/canonical/theme-color/icon tag; both image tags use absolutehttps://duckyquang.github.io/Co-Scientist/og.png; iconhrefs rewritten to/Co-Scientist/….dist/og.png(1200×630),dist/favicon.svg,dist/apple-touch-icon.png,dist/404.htmlall present.Only
frontend/index.html+frontend/public/assets changed — no app code touched.🤖 Generated with Claude Code