Ask Wikimedia for a rasterized PNG instead of raw SVG#22
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After yesterday's librsvg install (#21), the next REP.MC request still hung at processing — turns out the Alpine `vips` package is compiled WITHOUT rsvg support (verified via `vips --vips-config`), so installing librsvg as a runtime lib does nothing. libvips can't load it. Fortunately Wikimedia exposes server-side rasterization via the `Special:FilePath/<file>?width=N` endpoint: when the source is SVG it redirects to a thumbnail-server PNG; when it's already a raster the query param is ignored. Either way, our downstream libvips pipeline only sees PNG bytes — which it handles fine without librsvg. Sandbox-verified: hit Special:FilePath/Repsol_logo.svg?width=512 → HTTP 301 → upload.wikimedia.org/...//960px-Repsol_logo.svg.png → real PNG (960×240, 8-bit RGBA). 512 chosen so the largest output size (xl=256px) downsamples cleanly with headroom. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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What just happened
After yesterday's librsvg install (#21), the very next REP.MC request still hung at processing for ~30s before kamal-proxy 504'd:
```
22:59:16 cache miss for REP.MC
22:59:17 found logo via Wikidata, source=wikidata:Q174747
[504 — no further logs]
```
`kamal app exec --reuse "vips --vips-config | grep rsvg"` returned "no rsvg in vips config" — the Alpine `vips` package was compiled WITHOUT rsvg support. Installing librsvg as a runtime lib does nothing; libvips can't load it.
Fix
Wikimedia rasterizes server-side via `Special:FilePath/?width=N`. Append `?width=512` to the URL and:
Either way, our libvips downstream only sees PNG, which it handles fine.
512 was chosen so the largest output size (xl=256px) downsamples cleanly with quality headroom.
Test plan
🤖 Generated with Claude Code