This browser extension checks if a repository visited by the user is archived and uptodate in Software Heritage.

A color button on the right of the browser indicates if it is uptodate (green), in which case clicking on the button opens a tab on the corresponding page of the archive, missing (grey) or not up to date (yellow), in which case clicking on the button triggers a save code now request.

A brown color warns that the last archival visit did not succeed in full, so there may be issues that make archival not straightforward.

An orange color indicates that the SWH rate limit has been hit: one needs to get and add an access token to overcome the limitation.

A red color indicates that the API request of information for the repository did not succeed: this happens typically when one is visiting a repository that is not publicly accessible, and that naturally cannot be archived.

For accessing the latest published version of the extension on the Firefox Add-ons, the Chrome Web Store or the Microsoft Edge Add-ons, and more detailed usage instructions, see the webpage at https://www.softwareheritage.org/browser-extensions/

Many thanks to the Unpaywall extension developers (see https://unpaywall.org/products/extension): their work has been an essential starting point for designing and developing this extension.

The code base is meant to be identical between Firefox, Google Chrome and Microsoft Edge. Due to the ongoing transition to manifest version 3, there is currently one difference: for Firefox a manifest.json version 2 is provided, but for Google Chrome and Microsoft Edge one needs to create a package using the version 3 format provided in manifest-v3.json. The toplevel Makefile takes care of the appropriate reshuffling at package creation time.