Linkguard never touches your main branch. By default it only reports dead links, and if you turn on open-pr it opens a pull request that swaps them for Wayback copies, so you can read the report before anything changes. A tool quietly rewriting old posts on its own seemed like a bad idea.
LinkguardLinkguard: link checker for static sitesA free GitHub Action that checks outbound links in Jekyll, Hugo and folderblog sites and finds Wayback Machine snapshots for dead ones.