This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
DebugBear
debugbear.com
did:plc:4aqnkhmplb7mw3gooq472fgm
You can now measure LCP and INP scores in both Safari and Firefox!
https://www.debugbear.com/blog/firefox-safari-web-vitals
2025-12-15T15:55:03.536Z