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Changelog for beacon.min.js

Cloudflare occasionally updates the beacon.min.js file to improve Web Analytics functionality. The table below includes a log of what changed in the beacon.min.js file and when.

Date of change
2023-07-25 Fixed ETag format in the response header.
2023-07-13 Fixed the issue that was causing an illegal invocation error.
2023-04-19 Reports additional LCP diagnostic information using web-vitals library’s attribution build.
2023-04-06 Updated webpack configuration to output code in ECMAScript 3 (ES3) format.
2023-03-23 Updated Google’s web-vitals library (version 3.1.1) and removed experimental server-timing header.
2022-10-17 Updated to report new metrics such as time to first byte (TTFB), interaction to next paint (INP), and first contentful paint (FCP). Additionally, it reports navigator.webdriver, server-timing header (experimental), and protocol info (nextHopProtocol).
2021-12-14 Improved site filtering.
2021-11-16 When using the automatic installation feature of the JavaScript Beacon (available only to customers proxied through Cloudflare - also known as orange-clouded customers), Subresource Integrity (SRI) is now enabled by default. SRI is a security feature that enables browsers to verify that resources they fetch are delivered without unexpected manipulation.
2021-09-01 Improved to report debugging information for Core Web Vitals.
2021-05-28 startsWith function replaced with indexOf function, which prevents rendering if multiple beacon scripts are loaded.
2021-05-12 Reporting endpoint changed from /cdn-cgi/beacon/performance to /cdn-cgi/rum (for Browser Insights only).