Package
proj4
Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 1.1m
- +175% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 2
- Direct, from package.json
- Last release
- 24 days ago
- v2.22.0
- GitHub stars
- 2.2k
- 354 forks
- Open issues / PRs
- 99 / 5
- Contributors
- -
- Commits, last 52 weeks
- 142
Downloads
Last week 2026-09-15 to 2026-09-21
1,066,658 downloads last week, 4,937,955 in the last month. The 12-month change of +175% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 1282 in total
- Latest version
- 2.22.0, 31 Aug 202624 days ago
- First published
- 17 Sept 2013
- Last push to GitHub
- 13 Sept 202611 days before the snapshot
- Repository archived
- No
- Open issues
- 99
- Open pull requests
- 5
- Commits, last 52 weeks
- 142
- Dependents on npm
- -
Major versions
- v2 first release 2.0.0, 5 Nov 2013
- v1 first release 1.4.0, 24 Sept 2013
Recent releases
| Version | Published |
|---|---|
| 2.22.0 | 31 Aug 2026 |
| 2.21.0 | 27 Jul 2026 |
| 2.20.9 | 8 Jun 2026 |
| 2.20.8 | 6 Apr 2026 |
| 2.20.7 | 6 Apr 2026 |
| 2.20.6 | 2 Apr 2026 |
| 2.20.5 | 2 Apr 2026 |
| 2.20.4 | 6 Mar 2026 |
| 2.20.3 | 1 Mar 2026 |
| 2.20.2 | 18 Nov 2025 |
| 2.20.1 | 17 Nov 2025 |
| 2.20.0 | 12 Nov 2025 |
| 2.19.10 | 27 Jul 2025 |
| 2.19.9 | 26 Jul 2025 |
- Module format
- ESM + CommonJSFrom package.json type, main and exports fields
- TypeScript types
- Bundled
- Node.js engine range
- Not declared
- Runtimes
- -
- Unpacked size (npm)
- 825 kB
- Dependencies (2)
mgrswkt-parser- Peer dependencies (1)
geotiff
npm install proj4CDN
jsDelivr: 1.6m requests in 30 days
- jsDelivr
https://cdn.jsdelivr.net/npm/proj4@2.22.0/ - unpkg
https://unpkg.com/proj4@2.22.0/ - esm.sh
https://esm.sh/proj4@2.22.0
| Package | Weekly downloads | Gzip | Last release | Module | Comparison |
|---|---|---|---|---|---|
| @turf/turf | 1.1m | - | 1 month ago | ESM + CommonJS | - |
| @turf/tag | 1.1m | - | 1 month ago | ESM + CommonJS | - |
Indexability: Indexed.