The .zip-file that contains the offline version of kn Secrets can be downloaded here.
To verify that the .zip-file is genuine, use any appropriate tool to compute its SHA256 hash value. The SHA256 hash value should come out to be
797591b7fa35a6e6cba247d048ffb1828a1ed7587cad76ae91123f466ea616b3.
Once successfully verified, unzip the file into a directory on your disk, find the file "index.html" in that directory, and double-click that file to start kn Secrets in offline mode. Please follow the security guidelines whenever using kn Secrets in offline mode.
Due to a lack of public demand, kn Secrets is slated to be turned off sometime in January 2027. Offline versions installed on user systems will, of course, continue to work, but there will not be any new offline versions and no user support beyond that date either.