Speculation Rules Debugger | specrules.com (specrules.com)
Check Speculation Rules on any website. Validate prefetch and prerender rules against the WHATWG spec, probe speculated URLs with Sec-Purpose, and observe live Chromium prefetch/prerender activity.
Built a thing: specrules.com
It checks your Speculation Rules the way Chromium actually sees them. Header, inline, JS-injected. Full validation, including live prefetch/prerender events from a real browser.
Free, no signup, and very much beta. Bug reports welcome.
