|Flash on Linux sucks. Maybe now a little less than before, but it is still a rather unpleasant experience (it consumes too many resources and does not have the same performance as that experienced in Windows).
Fortunately, HTML5 is replacing it in many respects, but it seems we still have Flash for a while. For that reason, we recommend some extensions for Firefox to help you control Flash usage.
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NoFlash is a Firefox add-on that replaces the YouTube and Vimeo Flash player on third-party pages with the HTML5 counterpart.
Flashblock is an extension (plugin) for Google Chrome and Mozilla Firefox, which allows us to block all types of Flash content.
Through Flashblock we can block Flash content, even do it with entire pages, or activate only those that we want to see or allow all content, depending on our taste. It also allows us to define a white list or allowed list where we can specify sites where we can see Flash. A clear example for this would be YouTube, although although much of the page is already working on HTML5, there are a significant number of videos that still work under this Adobe technology. So through Flashblock we can define that this page "always" show us Flash content, without having to specify it every time we enter the site.
Their names say it all: do you want to download videos from MySpace, Google Video, DailyMotion, pörkölt, iFilm, DreamHost, Youtube and so many others? Do you want to automatically convert them to your preferred video formats? Be sure to try these 2 excellent extensions.
If you are browsing the web and want to change the size of any flash element then FlashResizer, an extension for Firefox, can be very useful.
By means of a green vertical line that is added to the objects in flash, you will be able to make the changes as well as return to the previous size by just double clicking on that line.
It is ideal to apply in flash games, YouTube videos and other similar sites where we want to resize the player for a better experience.
FlashFirebug is a Firefox extension that allows developers to debug Flash AS3 files on the web, in the same way as if they were debugging an HTML file.
To use FlashFirebug, you must have Firebug installed and Flash Player content debugger 10 or higher (compatible with Netscape browsers).