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Package

flatbuffers

Memory Efficient Serialization Library

v25.9.23, 24 Sept 2025Apache-2.0ESM + CommonJSTypes: Bundled
$ npm install flatbuffers
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Key numbers

As of 25 Sept 2026
Weekly downloads
7.5m
+407% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
0
Direct, from package.json
Last release
1 year ago
v25.9.23
GitHub stars
26.5k
3.7k forks
Open issues / PRs
109 / 197
Contributors
-
Commits, last 52 weeks
161

Downloads

Last week 2026-09-15 to 2026-09-21
02.5m5m7.5m10mSept 2025Mar 2026Sept 2026High 9m (25 Aug 2026)Low 1m (23 Dec 2025)
Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

7,531,006 downloads last week, 33,351,845 in the last month. The 12-month change of +407% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
038 in total
Latest version
25.9.23, 24 Sept 20251 year ago
First published
8 Mar 2016
Last push to GitHub
14 Sept 202610 days before the snapshot
Repository archived
No
Open issues
109
Open pull requests
197
Commits, last 52 weeks
161
Dependents on npm
233

Major versions

  1. v25 first release 25.1.21, 22 Jan 2025
  2. v24 first release 24.3.6, 7 Mar 2024
  3. v23 first release 23.1.4, 4 Jan 2023
  4. v22 first release 22.10.25, 26 Oct 2022
  5. v2 first release 2.0.0, 10 May 2021
  6. v1 first release 1.5.0, 10 Feb 2017
  7. v0 first release 0.0.1, 8 Mar 2016

Recent releases

VersionPublished
25.9.2324 Sept 2025
25.2.1011 Feb 2025
25.1.2425 Jan 2025
25.1.2122 Jan 2025
24.12.2323 Dec 2024
24.3.2526 Mar 2024
24.3.77 Mar 2024
24.3.67 Mar 2024
23.5.2626 May 2023
23.5.911 May 2023
23.5.89 May 2023
23.3.33 Mar 2023
23.1.2121 Jan 2023
23.1.2021 Jan 2023

Compatibility

Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
281 kB
Dependencies (0)
None

Install

npm install flatbuffers

CDN

jsDelivr: 585.1k requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/flatbuffers@25.9.23/
  • unpkghttps://unpkg.com/flatbuffers@25.9.23/
  • esm.shhttps://esm.sh/flatbuffers@25.9.23
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): no category.