This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Firefox for Web Developers
webdevs.firefox.com
did:plc:6jsvyhtxrkb4d2wrlwd2avmm
hasUAVisualTransition landed in Firefox 149, making it available across all major engines. As well as having a very catchy name, it lets you avoid doubling up on page transitions. Here's how it works:
2026-03-26T14:40:57.052Z