YouTube use Flash Player Firefox

YouTube use Flash Player

Force YouTube to use Flash player over the HTML5 player

Features & Capabilities

The "YouTube use Flash Player" browser extension allows users to force YouTube to use the Flash player rather than the default HTML5 player. This can improve performance on low-end devices where Flash performs better. The extension only requests Flash on YouTube's website itself, keeping embedded YouTube players on other sites to use HTML5 for lightweight operation. Users can watch embedded videos in Flash by opening them in a new tab. To activate the extension, simply refresh any open YouTube tabs after installation. This tool is part of a suite of YouTube utilities designed to enhance user experience, including options such as YouTube HD, no annotations, no autoplay, and ad blockers. Note that the FAQs for the extension use Google Analytics with linked terms for user privacy.

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
James Fray
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/youtube-use-flash-player/
Website:
http://add0n.com/youtube-tools.html?from=flash

User Reviews

Pros
Cons
  • Does not work on older versions of Firefox (e.g., 52.9.0)
  • General statements indicating it doesn't work for multiple users
Recent reviews
doesnt work 151.0.2 (64 bites)
by Ju*****, 2026-05-31

by 全民*****, 2025-04-03

by 远离*****, 2025-02-17
View all user reviews ›

Is YouTube use Flash Player Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

YouTube use Flash Player requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ******* ****** ** *** ********* ******** ***********
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

YouTube use Flash Player has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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