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How do I disable all HTML5 functionality? If there's no way to do this in-browser, could you direct me to the relevant part of the source code?

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Jason1974
Jason1974
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How do I disable all HTML5 functionality? I don't mean just YouTube players or add-ons, I mean wiping out all HTML5 functionality from the browser. (disable, wipe out, annihilate, scorched earth . . . you get the picture)

If there's no way to do this in-browser or with about:config, could you direct me to the relevant part of the source code so I can just re-program it?

Running Firefox 39.0 on Win7 x64

How do I disable all HTML5 functionality? I don't mean just YouTube players or add-ons, I mean wiping out all HTML5 functionality from the browser. (disable, wipe out, annihilate, scorched earth . . . you get the picture) If there's no way to do this in-browser or with about:config, could you direct me to the relevant part of the source code so I can just re-program it? Running Firefox 39.0 on Win7 x64

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user633449
user633449
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First, why do you want to disable HTML5? It is used by MANY websites for MANY different features, from better form support, to audio, to webgl graphics, etc.

You can see all HTML5 features your browser supports at http://html5test.com/

Finally, no, it's not possible to turn HTML5 support off, and the amount of work it would take to rip it out of the source code would be nearly impossible. Plus that browser would barely work on the web.

cor-el
cor-el
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You can set these media prefs to false on the about:config page:

  • media.windows-media-foundation.enabled
  • media.directshow.enabled
  • media.mediasource.enabled

Novain'i cor-el t@