Question 1

Prefixfree vs Autoprefixer: which is better?

Accepted Answer

Prefixfree is a runtime JavaScript library that adds prefixes dynamically in the browser, ideal for quick setups without build tools. Autoprefixer is a build-time tool integrated into pipelines like PostCSS, producing static CSS with better performance but requiring more configuration.

Question 2

How to use Prefixfree with a CSS framework like Bootstrap?

Accepted Answer

Include the Prefixfree script after the framework's CSS in your HTML to ensure both framework and custom styles are prefixed. However, if the framework already includes prefixes, Prefixfree might cause duplication, so test for conflicts.

Question 3

What happens if JavaScript is turned off?

Accepted Answer

Prefixfree won't run, so any CSS properties needing prefixes for that browser will not be applied, potentially breaking the layout. This requires fallback strategies for robustness.

Question 4

Does Prefixfree support modern CSS features like Grid?

Accepted Answer

Yes, Prefixfree prefixes properties only when needed based on browser detection. For modern features like Grid, if the browser supports them unprefixed, no prefixes are added, but check its documentation for edge cases.

Question 5

Can I extend Prefixfree for custom prefixes or fixes?

Accepted Answer

Yes, use the StyleFix API as described in the README. Register custom callbacks with StyleFix.register() to handle specific CSS properties or rules, allowing for extensibility beyond default prefixing.

Question 6

Is Prefixfree still useful with today's browsers?

Accepted Answer

It remains relevant for legacy projects or prototyping where prefixing is needed, but modern browsers have reduced prefix requirements, so its utility depends on your target audience and browser support needs.

Prefixfree

What is Prefixfree?

Overview

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Pros & Cons

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Frequently Asked Questions