Draw on a MapThird-party notices
Read the complete browser dependency notices, including OpenLayers, MapLibre, Lit, Lucide, and the export libraries.
The build generates these notices from the packages included in the browser files. Download the package list.
HEIF image decoder
The HEIF decoder uses libheif-js, libheif, and libde265 under LGPL-3.0. You may modify these libraries and reverse engineer the worker to debug those changes. These permissions apply independently of the website terms.
Read the LGPL and GPL license texts and the libde265 license texts.
Runtime notices cover Emscripten, musl, libc++, libc++abi, and compiler-rt.
Read the build and replacement instructions. Source downloads are free and do not require an account.
Download the complete HEIF source and rebuild package.
- libheif source
- libde265 source
- libheif-js source
- libheif-emscripten source
- Source revisions and checksums
- Worker application source
- Color-profile application source
- Worker build script and build dependencies
- MIT license for the worker application files
Fonts and map data
PDF fonts use the SIL Open Font License. Read the Noto Sans license and Noto CJK license.
Map data has separate terms. See the map-style notices and data credits.