Install for Firefox — Free.Version 1.6.0 · Firefox 153+
Open this page in Firefox and click Install, then accept the permission prompt. In any other browser the button just downloads a file that does nothing.
What you get
The same extension as the Chrome release, from the same source tree — not a cut-down port. Every feature is verified working on Firefox 153: syncing your Watch Later, bulk delete, the channel and topic breakdowns, filtering and sorting, bulk move or copy to another playlist, drag-and-drop reordering, multi-account support, bulk transcript download, and Send to Gemini Notebook.
Installing
- Open this page in Firefox 153 or newer.
- Click Install for Firefox above.
- Firefox asks you to confirm the add-on and its permissions. Accept.
- Go to your Watch Later playlist and click Open Dashboard.
Updates arrive on their own from this domain — there is nothing to subscribe to and no reason to revisit.
Privacy, same as everywhere else
No account, and your playlist data stays on your machine — TidyWL uses the YouTube session you already have. From version 1.6.0 it sends tidywl.com a random install identifier and your lifetime counts (videos deleted, likes removed, videos moved, bulk operations, Watch Later size), never which videos. On Firefox that is the Technical and interaction data toggle under the add-on's Permissions and data — pre-ticked on a fresh install; after an update from 1.5.0 Firefox leaves it off and does not ask, so the dashboard asks you once. It is spelled out in the privacy policy. The one exception you trigger yourself is Send to Gemini Notebook: the links you picked go to Google under your own login, because that is the entire point of the feature.