Open a 300k-row XLSX in the browser in ~300ms, no server
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HN · launched Nov 3, 2026 · 17 upvotes (top 27%) · 0 views
Niche: developer data and local file viewers · 40 launches, 3 in the last 7 days · Explore this niche →
Category and tags
- Horizontal
- Analytics & BI
- Prosumer
- Not AI
Visit website ↗ Source listing ↗
Could you build this?
Yes A browser XLSX viewer is buildable by wrapping existing parsers such as SheetJS or a streaming zip/XML parser, with a virtualized grid for large row counts. Reaching the claimed ~300ms performance takes optimization work, but no proprietary data or infrastructure is needed.
Discussion
2 comments analyzed.
Competitors
Other products that read as similar to this one : 268 launches clear the similarity bar, closest 8 shown.
Attention rank: #76 of 269 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 367 days after the earliest competitor.
- CSVtoTable · hn · 2026-08-21 · 6 upvotes · similarity 0.52
- I wrote a ~2KB executable file HTTP file downloader without Libc · hn · 2026-03-29 · 9 upvotes · similarity 0.50
- GoPeek · hn · 2026-05-27 · 20 upvotes · similarity 0.46
- Dbxlite · hn · 2025-12-12 · 5 upvotes · similarity 0.44
- OpenXW · github · 2026-09-28 · 91 upvotes · similarity 0.44
- office-engine · github · 2026-11-02 · 86 upvotes · similarity 0.44
- XLclick for Excel · ph · 2026-10-17 · 3 upvotes · similarity 0.44
- Spreadsheet Fixer · ph · 2026-10-31 · 1 upvotes · similarity 0.43
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