Changelog

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.

2024-06-11

Enhanced to include reporting of Server-Timing headers.

2024-05-22

Introducing new metric fields, transferSize and decodedBodySize are included.

2024-04-17

Introducing new metric fields, deliveryType (dt) and navigationType (nt) are included.

2023-10-18

Manages A/B testing tags.

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).