This plugin causes TiddlyWiki to continuously download (as a JSON file) the contents of any tiddler that is manually changed by any of several means:

• Confirming an edit
• Deleting tiddlers
• Imports
• Renames/relinks
• Optionally, typing in draft tiddlers can trigger a download

Where appropriate, separate 'before' and 'after' files are downloaded. Configured correctly, the browser will download the files silently in the background, and they can be used as a backup in case of accidental data loss.