What are the disadvantages of Leaflet?

Leaflet's drawbacks come from what its core deliberately leaves out. At roughly 42 KB gzipped, the library ships without routing, 3D rendering, WebGL acceleration, or native vector tile support, so any project that needs those features has to add a plugin or bring in a second library. Volodymyr Agafonkin released the first version in 2011 as a lighter alternative to heavier commercial map SDKs, and that narrow scope has barely changed since.

Why do these gaps matter in practice?

Leaflet renders through the DOM and Canvas rather than WebGL, so large point layers (thousands of live markers, a dense GeoJSON file) can start to stutter unless the app adds a clustering plugin or switches to the canvas renderer. The library also defaults to the Web Mercator projection; anything else needs the separate Proj4Leaflet plugin. Because Leaflet has no built-in tile source, teams still have to pick, pay for, or self-host a provider such as OpenStreetMap or Mapbox before a single tile loads. Plugin quality varies as well: popular add-ons like Leaflet.draw and Leaflet.markercluster are community-maintained rather than part of the core release cycle, so updates can lag behind new Leaflet versions.

Where do the drawbacks matter least?

None of this affects the maps Leaflet was built for: store locators, dashboards, blog embeds, and internal tools showing a few hundred markers on a standard web projection. In that range, the small core size and simple API outweigh the missing features, and a free tile provider covers the mapping cost entirely.

Projects that keep hitting several of these limits at once (heavy WMS or WFS traffic, native 3D terrain, tens of thousands of simultaneous markers) usually move to OpenLayers or a WebGL-based library instead of stacking more plugins onto Leaflet.

Published at: August 6, 2026