-prefix-free lets you use only unprefixed CSS properties everywhere. It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed.
“[-prefix-free is] fantastic, top-notch work! Thank you for creating and sharing it.”
— Eric Meyer
<link> or <style> elements and adds a vendor prefix where neededstyle attribute and adds a vendor prefix where needed<link> or <style> elements, style attribute changes and CSSOM changes (requires plugin).css() method get and set unprefixed properties (requires plugin)@import-ed files is not supportedstyle attribute) won’t work in IE and Firefox < 3.6. Properties as well in Firefox < 3.6.Check this page’s stylesheet ;-)
You can also visit the Test Drive page, type in any code you want and check out how it would get prefixed for the current browser.
Just include prefixfree.js anywhere in your page. It is recommended to put it right after the stylesheets, to minimize FOUC
That’s it, you’re done!
The target browser support is IE9+, Opera 10+, Firefox 3.5+, Safari 4+ and Chrome on desktop and Mobile Safari, Android browser, Chrome and Opera Mobile on mobile.
If it doesn’t work in any of those, it’s a bug so please report it. Just before you do, please make sure that it’s not because the browser doesn’t support a CSS3 feature at all, even with a prefix.
In older browsers like IE8, nothing will break, just properties won’t get prefixed. Which wouldn’t be useful anyway as IE8 doesn’t support much CSS3 ;)
Test the prefixing that -prefix-free would do for this browser, by writing some CSS below:
The link can then be pasted into JDownloader to assemble and download the final file.
If you are a user looking to download content from a site powered by the KVS Player (v6 or higher), you can often use browser-based methods: Inspect Element
: For power users, yt-dlp remains the industry standard. It is a highly adaptive tool that can parse the underlying code of thousands of sites, including those using the KVS Player, to fetch high-quality versions of embedded media.
A powerful alternative that supports over 1,000 sites and can handle HLS (M3U8) and DASH streams common in modern KVS installations. 2. Browser Extensions (Convenience)
This is the most reliable "no-software" way to find the actual video source URL.
), users can monitor the tab to identify media requests. Filtering for extensions like .mp4 or streaming manifest files such as .m3u8 often reveals the direct URL of the video file.
The link can then be pasted into JDownloader to assemble and download the final file.
If you are a user looking to download content from a site powered by the KVS Player (v6 or higher), you can often use browser-based methods: Inspect Element kvs player video downloader updated
: For power users, yt-dlp remains the industry standard. It is a highly adaptive tool that can parse the underlying code of thousands of sites, including those using the KVS Player, to fetch high-quality versions of embedded media. The link can then be pasted into JDownloader
A powerful alternative that supports over 1,000 sites and can handle HLS (M3U8) and DASH streams common in modern KVS installations. 2. Browser Extensions (Convenience) A powerful alternative that supports over 1,000 sites
This is the most reliable "no-software" way to find the actual video source URL.
), users can monitor the tab to identify media requests. Filtering for extensions like .mp4 or streaming manifest files such as .m3u8 often reveals the direct URL of the video file.