Tailwind CSS v4.0 is an all-new version of the framework optimized for performance and flexibility, with a reimagined configuration and customization

Tailwind CSS v4.0 - Tailwind CSS

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Style Pass

2025-01-23 01:00:06

Tailwind CSS v4.0 is an all-new version of the framework optimized for performance and flexibility, with a reimagined configuration and customization experience, and taking full advantage of the latest advancements the web platform has to offer.

Start using Tailwind CSS v4.0 today by installing it in a new project, or playing with it directly in the browser on Tailwind Play.

For existing projects, we've published a comprehensive upgrade guide and built an automated upgrade tool to get you on the latest version as quickly and painlessly as possible.

Tailwind CSS v4.0 is a ground-up rewrite of the framework, taking everything we've learned about the architecture over the years and optimizing it to be as fast as possible.

When benchmarking it on our own projects, we've found full rebuilds to be over 3.5x faster, and incremental builds to be over 8x faster.

The most impressive improvement is on incremental builds that don't actually need to compile any new CSS — these builds are over 100x faster and complete in microseconds. And the longer you work on a project, the more of these builds you run into because you're just using classes you've already used before, like flex, col-span-2, or font-bold.