Exports videos from your YouTube Watch Later page to a JSON file
Tampermonkey script to export videos from your YouTube Watch Later page to a JSON or CSV file
Also available on GitHub: https://github.com/rbits0/watch-later-extractor
Disabling images might make the process faster. To do this in Firefox, head to about:config and set permissions.default.image
to 2
(make sure to set it back to default once you're done).