# Autoprefixer 10.5.4

- Product: Autoprefixer (https://whatsnew.fyi/product/autoprefixer)
- Vendor: PostCSS
- Date: 2026-07-16
- Version: 10.5.4
- Original notes: https://github.com/postcss/autoprefixer/releases/tag/10.5.4
- Permalink: https://whatsnew.fyi/product/autoprefixer/releases/10.5.4

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'.

---

- Fixed prefixed rule duplication (by @xianjianlf2).