fbevents.js

An archive of historical versions of Facebook's pixel tracking script fbevents.js. Useful for diffing changes between releases, auditing behavior over time, or pinning a specific version.

Versions

Each version below links to the file in this repo and the original source it was retrieved from. Versions are listed newest first.

Version	Released	File	Source
2.9.324	(added 22.05.2026)	versions/2.9.324.js	connect.facebook.net
2.9.300	(added 22.05.2026)	versions/2.9.300.js	connect.facebook.net
2.9.200	(added 22.05.2026)	versions/2.9.200.js	connect.facebook.net
2.9.134	15.10.2023	versions/2.9.134.js	connect.facebook.net
2.9.121	05.08.2023	versions/2.9.121.js	connect.facebook.net
2.9.94	22.01.2023	versions/2.9.94.js	connect.facebook.net
2.9.93	22.01.2023	versions/2.9.93.js	connect.facebook.net
2.9.92	22.01.2023	versions/2.9.92.js	connect.facebook.net
2.9.91	22.01.2023	versions/2.9.91.js	connect.facebook.net
2.9.90	22.01.2023	versions/2.9.90.js	connect.facebook.net
2.9.89	22.01.2023	versions/2.9.89.js	connect.facebook.net
2.9.88	22.01.2023	versions/2.9.88.js	connect.facebook.net
2.9.87	22.01.2023	versions/2.9.87.js	connect.facebook.net
2.9.84	22.01.2023	versions/2.9.84.js	connect.facebook.net
2.9.15	18.12.2019	versions/2.9.15.js	gist.github.com
2.8.14	15.05.2018	versions/2.8.14.js	github.com/popoiopo
2.8.0	23.08.2021	versions/2.8.0.js	3sdigital.com.br
2.5.1	06.01.2017	versions/2.5.1.js	gist.github.com

The "Released" date is the date the version was first observed in the wild, not necessarily Facebook's internal release date. When possible, versions are pulled directly from connect.facebook.net.

CDN

From Facebook

Append a v query parameter to request a specific version:

https://connect.facebook.net/en_US/fbevents.js?v=2.9.324

Only versions Facebook has actually released are served this way. Requesting an unknown version silently returns the latest build.

The latest version is always available at:

https://connect.facebook.net/en_US/fbevents.js

From this repo (jsDelivr)

To pin a specific historical version, link via jsDelivr:

https://cdn.jsdelivr.net/gh/alewolf/fbevents.js/versions/2.9.324.js

Replace the version number in the path as needed.

Contributing

If you have a version that isn't in the archive yet, please open a PR adding the file under versions/ and a corresponding row in the table above. Including a working source URL is appreciated.