If you just want a one-time backup or HTML copy:
The decision to use a JSON-based single file is excellent for stability and data recovery. The inclusion of an automatic .bak file is a thoughtful touch that has saved countless users from data loss during browser crashes. google chrome bookmarks folder location
If you're looking to move bookmarks to a different Chrome profile or sync them across devices, you can export bookmarks from Chrome's bookmark manager and then import them into another profile or device. If you just want a one-time backup or