# Next.js v15.5.25

- Product: Next.js (https://whatsnew.fyi/product/next-js)
- Vendor: Vercel
- Date: 2026-08-31
- Version: v15.5.25
- Original notes: https://github.com/vercel/next.js/releases/tag/v15.5.25
- Permalink: https://whatsnew.fyi/product/next-js/releases/v15.5.25

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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- **fixed** — Re-enabled AVIF Image Optimization when newer versions of sharp are installed

Follow-up release to [v15.5.24](https://github.com/vercel/next.js/releases/tag/v15.5.24) re-enabling AVIF Image Optimization when newer versions of `sharp` are installed ([#97954](https://github.com/vercel/next.js/pull/97954)).