1
vote
2answers
871 views

Is there any way to select the sound device for HTML5 audio playback?

By default, Firefox uses the system's default audio device for HTML5 audio playback and the program offers no possibility to select an alternative audio device, if several audio devices are present on ...
0
votes
1answer
166 views

How to make YouTube search results to be of webm format in Firefox?

In Google Chrome there is an extension that add &webm=1 in all YouTube search URIs. I did not find an alternative add-on in Firefox, any alternative methods? Thanks.
20
votes
4answers
11k views

Is there a HTML5 Validator plugin for Firefox?

Is there a plugin for firefox to validate HTML 5? I've always used this but if my webpage has a <!DOCTYPE HTML> doctype it complains about it not having a doctype at all. I specifically would ...