Here are some links on how to save web browser bookmarks.    

https://support.google.com/chrome/answer/96816?hl=en

https://www.howtogeek.com/440339/how-to-back-up-and-restore-your-chrome-bookmarks-locally/

https://support.apple.com/guide/safari/import-bookmarks-history-and-passwords-ibrw1015/mac#:~:text=In%20the%20Safari%20app%20on%20your%20Mac%2C%20choose%20File%20%3E%20Export,the%20file%20named%20%E2%80%9CSafari%20Bookmarks.

https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them