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#3886 studio: no favicon — /favicon.ico 404s and the page declares no icon

Opened by sntxrr · 10/24/2026

Defect studio serve has no favicon. Browsers request /favicon.ico and get a 404 with a JSON body, and the page <head> has no <link rel="icon">, so the tab shows the browser's generic icon. With studio open next to other tools, its tab is hard to find.

Evidence (@swamp/stagecraft/studio 2026.09.30.1, swamp 20261023.183232.0)

  • GET /favicon.ico → 404 application/json
  • GET /favicon.svg → 404
  • The served HTML has no <link rel="icon">

Suggested fix Ship an SVG icon with the existing /assets/ and reference it with <link rel="icon" type="image/svg+xml" href="/assets/favicon.svg">. Also answer /favicon.ico (or redirect it), since some clients request that path whatever the page declares. The icon is same-origin, so it passes studio's Host/Origin and CORP checks unchanged.

Upstream repository: https://github.com/swamp-club/swamp-extensions

Environment

  • Extension: @swamp/stagecraft@2026.10.15.2
  • swamp: 20261023.183232.0-sha.c0e1560b
  • OS: darwin (aarch64)
  • Deno: 2.9.8
  • Shell: /bin/zsh
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10/24/2026, 7:03:40 PM

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system commented 10/24/2026, 7:03:40 PM

Classified automatically when this issue was filed.

  • Source: Extensions

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