{"editorial_visual":"https://favicon.now/static/images/editorial/guides/favicon-http-headers.webp","implementation_artifact":null,"published":"2026-09-14","section_headings":["Capture both sides of the exchange","Validators explain repeat requests","Match declared, served, and decoded types","Make failures unambiguous","Read a complete conditional request","Configure intermediaries without losing type integrity","Reusable command-line inspection"],"sources":[{"label":"MDN HTTP caching","url":"https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Caching"},{"label":"MDN MIME types","url":"https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/MIME_types"}],"title":"Favicon HTTP Headers: Browser Requests and Server Responses","updated":"2026-09-14","url":"https://favicon.now/guides/favicon-http-headers"}