# Swiper v12.1.3

- Product: Swiper (https://whatsnew.fyi/product/swiper)
- Vendor: idangero.us
- Date: 2026-03-24
- Version: v12.1.3
- Original notes: https://github.com/nolimits4web/swiper/releases/tag/v12.1.3
- Permalink: https://whatsnew.fyi/product/swiper/releases/v12.1.3

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** — Use virtual slides count in onResize when virtual mode is enabled
- **fixed** — Round down slidesPerView before calculating number of slides in grid
- **added** — Add navigation button slots to element

###### Bug Fixes

- **core:** use virtual slides count in onResize when virtual mode is enabled ([#8163](https://github.com/nolimits4web/Swiper/issues/8163)) ([4400083](https://github.com/nolimits4web/Swiper/commit/44000834d05ac339a9c4dfbaaa3f60c1a0631cff))
- **grid:** round down `slidesPerView` before calculating number of slides ([#8172](https://github.com/nolimits4web/Swiper/issues/8172)) ([49a55ab](https://github.com/nolimits4web/Swiper/commit/49a55ab2c89c63679cdd21d389ec7ef9d9d375f4))

###### Features

- **element:** add navigation button slots ([cc82241](https://github.com/nolimits4web/Swiper/commit/cc8224177d5f577b672e37b9386f7388d71ba3c3))