-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:
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: A hand-drawn 2D platformer that runs smoothly on both Intel and newer Apple Silicon Macs. How to Fix Common High Sierra Gaming Issues
These titles have historically strong support for High Sierra or explicitly list it in their minimum requirements: The Sims 4
Minecraft (classic versions), Stardew Valley , Terraria , Hades , Hollow Knight , and Slay the Spire .
Apple’s transition away from 32-bit architecture began here. High Sierra was the last operating system to fully support 32-bit applications, but it also introduced a stricter Metal API and security protocols that broke hundreds of classic titles. The good news? Many of those broken games have since been —either by developers, community patches, or clever workarounds.
: Older Macs running High Sierra (2009–2017 models) often suffer from heat-related throttling. Using a laptop stand and ensuring vents are clear can prevent frame drops during long sessions. 3. How to Play Modern Games on High Sierra
: A hand-drawn 2D platformer that runs smoothly on both Intel and newer Apple Silicon Macs. How to Fix Common High Sierra Gaming Issues games for mac os high sierra fixed
These titles have historically strong support for High Sierra or explicitly list it in their minimum requirements: The Sims 4 : Older Macs running High Sierra (2009–2017 models)
Minecraft (classic versions), Stardew Valley , Terraria , Hades , Hollow Knight , and Slay the Spire . How to Play Modern Games on High Sierra
Apple’s transition away from 32-bit architecture began here. High Sierra was the last operating system to fully support 32-bit applications, but it also introduced a stricter Metal API and security protocols that broke hundreds of classic titles. The good news? Many of those broken games have since been —either by developers, community patches, or clever workarounds.