YouTube Dislike Viewer Firefox Addon
The complete guide to seeing YouTube dislike counts in Mozilla Firefox — on desktop and on Firefox for Android — including how to install the Return YouTube Dislike addon and how to use our free online tool as a no-install alternative.
Our online YouTube dislike viewer works in Firefox instantly — paste any video URL, get the dislike count.
How to Install Return YouTube Dislike on Firefox Desktop
Go to the Firefox Add-Ons Site
Open Firefox and navigate to addons.mozilla.org. This is Firefox's official extension marketplace — the equivalent of Chrome's Web Store. You can also access it by clicking the hamburger menu (☰) in the top right of Firefox, then clicking 'Add-ons and themes'.
Search for Return YouTube Dislike
Type "Return YouTube Dislike" in the search box and press Enter. The addon by Anarios will appear as a top result. It has over one million Firefox users and a strong rating. Make sure you are installing the official listing from the official Firefox Add-Ons site — not from any third-party source.
Open the Addon Listing
Click on the addon name or 'Return YouTube Dislike' card to open its full listing page. Here you can review the addon description, permissions, user reviews, and version history. The source code link to GitHub is also provided for independent security review.
Click Add to Firefox
Click the blue "Add to Firefox" button. A permissions popup will appear. The Return YouTube Dislike addon requests permission to access data on youtube.com — nothing else. Click "Add" to confirm.
Visit YouTube and Verify
Open or refresh any YouTube video tab. You will see the estimated dislike count appear next to the like button below the video player. The number updates as you navigate between videos — no page refreshes or additional steps are needed.
🦊 Firefox for Android — The Best Mobile Extension Option
Firefox for Android is unique among mobile browsers in that it supports a substantial selection of browser extensions — including Return YouTube Dislike. This makes it currently the only mobile browser that supports an extension-based YouTube dislike viewer, making it the top choice for Android users who want automatic dislike display without needing to use a separate app or tool.
To install on Firefox for Android: open the Firefox app, tap the three-dot menu at the bottom right, tap "Add-ons", and search for "Return YouTube Dislike". Tap "Add to Firefox" and confirm. After installation, open any YouTube video in Firefox's browser (not the YouTube app) and the dislike count will appear automatically.
Note that this works when watching YouTube in the Firefox browser app — it does not affect the standalone YouTube Android app, as browser extensions cannot modify native apps. For dislike viewing within the YouTube app itself on Android, see our mobile guide.
Online Alternative: View YouTube Dislikes Without Any Firefox Addon
Not ready to install an addon? Our free online YouTube dislike viewer works perfectly in Firefox without any addon required. It is ideal for users who prefer a clean browser without extensions, who are on private/incognito browsing sessions, or who use Firefox on devices where extension management is restricted.
The online tool uses the identical Return YouTube Dislike API and provides the same data as the addon — likes, dislikes, view count, upload date, and the visual like-to-dislike ratio bar. The only difference is that you look up videos individually by pasting the URL, rather than seeing counts appear automatically.
To use it: copy any YouTube video URL from your Firefox address bar → navigate to youtubedislikeviewer.org → paste the URL → click View 👎. Results appear within a second. You can also add ?v=VIDEO_ID to the URL to pre-load a specific video.
Firefox vs. Chrome for Viewing YouTube Dislikes
Both Firefox and Chrome offer excellent extension-based YouTube dislike viewing through the Return YouTube Dislike addon/extension. The data and accuracy are identical — both pull from the same API. The user experience is also near-identical: the dislike count appears next to the like button automatically on every video.
The key advantage Firefox has over Chrome is on mobile. Firefox for Android's extension support means mobile Firefox users can get automatic dislike display in a way that Chrome for Android users cannot. Chrome's Android browser does not support extensions of any kind, making our online tool the best Chrome mobile option.
For privacy-conscious users, Firefox with Return YouTube Dislike is a popular combination because Firefox has stronger default privacy protections than Chrome (no data sent to Google, no FLoC/Topics API participation), and the Return YouTube Dislike addon itself operates with minimal permissions and anonymous data contribution.
🔧 Troubleshooting: Return YouTube Dislike Not Working in Firefox
Fix: Make sure you are on the standard YouTube website (youtube.com), not the YouTube Music or YouTube TV sub-sites. Perform a hard reload of the YouTube page with Ctrl+Shift+R to clear cached content.
Fix: By default, Firefox addons are disabled in Private Browsing windows. To enable: go to about:addons, click on Return YouTube Dislike, scroll down to 'Run in Private Windows', and set it to 'Allow'.
Fix: Open your ad blocker's settings and add returnyoutubedislikeapi.com to the whitelist/allowlist. The extension's API call to this domain is what retrieves the dislike data.
Fix: Check if returnyoutubedislikeapi.com is accessible by typing it in a new tab. If it is unreachable, the service may be experiencing temporary downtime — try again in a few minutes.