# Show HN: Open a 300k\-row XLSX in the browser in \~300ms, no server

- HackerByte page: <https://hackerbyte.net/en/stories/a-github-project-that-can-open-large-xlsx-files-in-the-browser-quickly-without-n-50348361>
- Original source: <https://github.com/p10node/office-engine>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50348361>
- Submitted to Hacker News: 2026-11-03T05:13:30.000Z

A GitHub project that can open large XLSX files in the browser quickly, without needing a server.

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