Leaflet

Spec sheet

Purpose

Leaflet is an open-source JavaScript library for building mobile-friendly interactive maps.Read 4 Oct 2026 · leafletjs.com

Security

The CDN example includes integrity hashes, which the page says are included for security when loading Leaflet from a CDN.Read 4 Oct 2026 · leafletjs.com

Founded

2010Read 28 Sep 2026 · leafletjs.com

Browser support

The site lists desktop browser support for Chrome, Firefox, Safari 5+, Opera 12+, IE 9–11, and Edge, and mobile support for iOS Safari 7+, mobile Chrome and Firefox, and IE10+ on Windows 8 devices.Read 4 Oct 2026 · leafletjs.com

Contributor and origin

The project says it was originally created by Volodymyr Agafonkin and is now developed by a community of contributors.Read 4 Oct 2026 · leafletjs.com

Customisation

Leaflet supports restyling popups and controls, custom layers and controls, custom projections, and extending classes.Read 4 Oct 2026 · leafletjs.com

Distribution

The stable release is available through unpkg, cdnjs, jsDelivr, direct downloads, and the npm package manager.Read 4 Oct 2026 · leafletjs.com

Interactions

Map interactions include drag panning, wheel and pinch zoom, keyboard navigation, events, and draggable markers.Read 4 Oct 2026 · leafletjs.com

Lightweight

The site describes Leaflet as about 42 KB of JavaScript gzipped, plus 3.5 KB of CSS gzipped.Read 4 Oct 2026 · leafletjs.com

Map data integrations

Leaflet can use OpenStreetMap tiles in its example and does not require a particular tile provider; tutorials cover WMS and TMS services.Read 4 Oct 2026 · leafletjs.com

Map layers

Built-in layers include tile layers, WMS, markers, popups, vector shapes, image overlays, and GeoJSON.Read 4 Oct 2026 · leafletjs.com

Notable scope limit

Leaflet says it focuses on making basic mapping features work well and suggests checking for a plugin when a feature is missing.Read 4 Oct 2026 · leafletjs.com

Release versions

The download page lists 1.9.4 as stable and 2.0.0-alpha.1 as prerelease, and cautions that the main development version may contain incompatible changes.Read 4 Oct 2026 · leafletjs.com

Support and learning

The site points users to tutorials, API documentation, a FAQ, GitHub issues, Stack Overflow, and GIS Stack Exchange for guidance and questions.Read 4 Oct 2026 · leafletjs.com

Plans and prices

Every Leaflet plan and price →

Where Specifiction places it

• Geo Tools#17 of 267.4
• Interactive Map Software#27 of 407.7