Leaflet

Leaflet was created 11 years ago by Volodymyr Agafonkin, a Ukrainian citizen living in Kyiv.

Russian bombs are now falling over Volodymyr's hometown. His family, his friends, his neighbours, thousands and thousands of absolutely wonderful people, are either seeking refuge or fighting for their lives.

Russian soldiers have already killed tens of thousands of civilians, including women and children, and are committing mass war crimes like gang rapes, executions, looting, and targeted bombings of civilian shelters and places of cultural significance. The death toll keeps rising, and Ukraine needs your help.

As Volodymyr expressed a few days before the invasion:

Ukrainians are recommending the Come Back Alive charity. For other options, see StandWithUkraine.

If an appeal to humanity doesn't work for you, I'll appeal to your egoism: the future of Ukrainian citizens is the future of Leaflet.

It is chilling to see Leaflet being used for documenting Russia's war crimes, factual reporting of the war and for coordination of humanitarian efforts in Romania and in Poland. We commend these uses of Leaflet.

If you support the actions of the Russian government (even after reading all this), do everyone else a favour and carry some seeds in your pocket.

Leaflet maintainers.

Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps.

Weighing just about 42 KB of gzipped JS plus 4 KB of gzipped CSS code, it has all the mapping [features][] most developers ever need.

Leaflet is designed with simplicity, performance and usability in mind.

It works efficiently across all major desktop and mobile platforms out of the box,

taking advantage of HTML5 and CSS3 on modern browsers while being accessible on older ones too.

It can be extended with a huge amount of [plugins][],

has a beautiful, easy to use and [well-documented][] API

and a simple, readable [source code][] that is a joy to [contribute][] to.

For Leaflet downloads (including the built main version), check out the [download page][].

We're happy to meet new contributors.

If you want to get involved with Leaflet development, check out the [contribution guide][contribute].

Let's make the best mapping library that will ever exist,

and push the limits of what's possible with online maps!

[contributors]: https://github.com/Leaflet/Leaflet/graphs/contributors

[features]: http://leafletjs.com/#features

[plugins]: http://leafletjs.com/plugins.html

[well-documented]: http://leafletjs.com/reference.html "Leaflet API reference"

[source code]: https://github.com/Leaflet/Leaflet "Leaflet GitHub repository"

[hosted on GitHub]: http://github.com/Leaflet/Leaflet

[contribute]: https://github.com/Leaflet/Leaflet/blob/main/CONTRIBUTING.md "A guide to contributing to Leaflet"

[official website]: http://leafletjs.com

[download page]: http://leafletjs.com/download.html