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Open a 300k-row XLSX in the browser in ~300ms, no server

INFRData & Infrastructure·HNShow HN

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Breakout launch

Beat 93% of Show HN launches that day

#12 of 188 on Nov 3

Share on X

#1 of 9 Data & Infrastructure launches on Show HN on Nov 3. 12.2% of Data & Infrastructure launches (6 of 49) reached 10+ points in the last 7 days. See Data & Infrastructure →

170 (0.0%)

points · traction gained Nov 8, 12:36 UTC → Nov 9, 10:27 UTC

Traction frozen — tracking ended at 149h after listing. Show HN votes are re-read for ~168h.

comments

10d

listed Nov 3, 05:13 UTC

Traction (points) over time

01020Nov 3Nov 5Nov 7Nov 9Nov 11Nov 13ListedTracking endedNo readings after tracking ended; traction stays at the last recorded valueNov 4, 21:23 UTC · 17 points · 2 comments · 40h after listingNov 5, 18:13 UTC · 17 points · 2 comments · 61h after listingNov 6, 17:32 UTC · 17 points · 2 comments · 84h after listingNov 7, 13:58 UTC · 17 points · 2 comments · 105h after listingNov 8, 12:36 UTC · 17 points · 2 comments · 127h after listingNov 9, 10:27 UTC · 17 points · 2 comments · 149h after listing
6 readings (one per daily ingest run). Dots are recorded values; lines just connect them — nothing in between is measured.

Key statistics

Traction
17points
Comments
2
Rank in INFR this week
—not listed in the last 7 days
Rank overall this week
—
Sector hit rate
12.2%6/49 · 7D
Traction line
Hit10+ points
First reading
17Nov 4, 21:23 UTC
Last reading
17Nov 9, 10:27 UTC
Readings
6over 149h

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Grades · each graded against other Data & Infrastructure launches from the same source

Momentum

—

—

Traction gained in the latest daily interval

Not re-read in the latest run, so no recent gain

Velocity

A

0.35 points/h

Votes per hour since listing (age capped at 48h)

Better than 96% · vs 201 Data & Infrastructure · Show HN launches, last 30 days

Engagement

—

1.2 per 10 points

Comments per 10 points

Too few peers to grade (19; need 20)

Staying Power

—

1.0×

Votes at last reading ÷ votes at first reading

Too few peers to grade (19; need 20)

Launch-day race · #12 of 188 Show HN launches on 2026-11-03

  1. #10Rustable is an open source database client built in Rust28 points
  2. #11ReBirth 338 in Browser25 points
  3. #12Open a 300k-row XLSX in the browser in ~300ms, no server17 points
  4. #13Kvittas, an Expense Splitting App12 points
  5. #14Remene11 points
All launches on 2026-11-03 →

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Data as of Nov 13, 2026, 9:22 AM UTC. Sector comes from keyword rules on the title and tagline and can be wrong. How it works