Remove Multi Titles (YouTube)

Pins the first-seen title and thumbnail per video on YouTube (watch, Shorts, and lists) to reduce A/B title and thumbnail flicker.

YouTube sometimes shows different titles and thumbnails for the same video (for example A/B tests). This add-on remembers the first title and thumbnail you see for each video and keeps showing that on the player and in list-style pages (home, subscriptions, search, related videos, and similar). How it works: The first time a title/thumbnail appears for a video, it is saved locally in your browser. On later visits, that same one is always shown again for that video ID. Updates run after navigation (including YouTube’s in-page history changes), with short retries so metadata can load—there is no aggressive continuous polling of the whole page. Scope: The add-on only runs on youtube.com. It does not run on other sites. Privacy: No accounts, no analytics, and no requests to our servers. Pinned items are stored only in the browser’s extension storage on your device. See the privacy policy link on this listing for details. Requirements: Firefox 140 or newer (desktop). Firefox for Android 142 or newer, where applicable. Source & issues: https://github.com/Arzuparreta/remove-multi-titles-yt