# tailwind-merge v3.4.0

- Product: tailwind-merge (https://whatsnew.fyi/product/tailwind-merge)
- Vendor: Dany Castillo
- Date: 2025-11-09
- Version: v3.4.0
- Original notes: https://github.com/dcastil/tailwind-merge/releases/tag/v3.4.0
- Permalink: https://whatsnew.fyi/product/tailwind-merge/releases/v3.4.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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###### New Features

- Performance optimizations which make tailwind-merge >10% faster
    - Vibe optimization by @quantizor in https://github.com/dcastil/tailwind-merge/pull/547
    - Additional optimizations by @quantizor in https://github.com/dcastil/tailwind-merge/pull/619

###### Documentation

- Improve docs by clarifying things, adding more examples by @dcastil in https://github.com/dcastil/tailwind-merge/pull/618
- Make examples more realistic by @dcastil in https://github.com/dcastil/tailwind-merge/pull/617
- Add custom variant as an alternative to docs by @kidonng in https://github.com/dcastil/tailwind-merge/pull/592

###### Other

- Improve benchmarking suite by @quantizor in https://github.com/dcastil/tailwind-merge/pull/620

**Full Changelog**: https://github.com/dcastil/tailwind-merge/compare/v3.3.1...v3.4.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov and a private sponsor for sponsoring tailwind-merge! ❤️