Proj4js

Category - JavaScript Libraries

Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.


We have discovered  2,576 live websites   that are using Proj4js.

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Technology usage statistics

Websites using Proj4js2,576 websites
Most popular in the country United States
Market position in JavaScript Libraries#735
Market penetration in JavaScript Libraries<0.1%
Most popular version2.3.6

Technology adoption

Recent changes in Proj4js usage. (See Proj4js Usage Changes report)
Websites that added Proj4js+57
Websites that dropped Proj4js-78
Websites that changed version of Proj4js7

Proj4js usage distribution by website rank

The correlation between utilization of Proj4js technology and the relative popularity of websites

Geographical Distribution

Technology usage distribution by websites across the globe.



Websites utilizing Proj4js

Top websites that use Proj4js
DomainCountryRankContacts
www.bls.gov United States1,694
www.ukraine.com.ua Ukraine14,883
www.barcelona.cat Spain27,410
www.dmi.dk Denmark28,067
www.aki.ee Estonia30,694
www.vgn.de Germany44,744
See full domain list

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Alternative Names

  • proj js



Major Versions

  • 2.xx (28 subversions, 681 domains)