Thomas Steiner 3/8/2025

Setting the COOP and COEP headers on static hosting like GitHub Pages

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This technical article details the process of enabling Cross-Origin-Opener-Policy (COOP) and Cross-Origin-Embedder-Policy (COEP) headers on static hosting platforms like GitHub Pages. It explains that while these headers typically require server configuration, they can be implemented using a service worker, allowing sites to become cross-origin isolated. This isolation unlocks advanced browser APIs like SharedArrayBuffer and high-precision timers, which are useful for technologies like SQLite Wasm with OPFS.

Setting the COOP and COEP headers on static hosting like GitHub Pages

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