Open-source credits
These tools are built on open-source software. Thank you to everyone who maintains it.
| Project | Licence | Used for |
|---|---|---|
| Lit | BSD 3-Clause | The tool interface |
| client-zip | MIT | Building ZIP downloads |
| jSquash WebP | Apache 2.0 | WebP encoding where the browser cannot |
| libwebp | BSD 3-Clause | WebP codec inside jSquash |
| UPNG.js | MIT | Smaller PNG files with fewer colours |
| pako | MIT | PNG compression inside UPNG.js |
| libheif | LGPL 3.0 | Opening iPhone HEIC photos where the browser cannot |
| libde265 | LGPL 3.0 | HEVC decoding inside libheif |
| libheif-js | LGPL 3.0 | The WebAssembly build of libheif |
| Astro | MIT | Building the site |
| Unbounded | SIL Open Font License 1.1 | The headings typeface, served from this site |
| Hanken Grotesk | SIL Open Font License 1.1 | The text typeface, served from this site |
| Martian Mono | SIL Open Font License 1.1 | The labels typeface, served from this site |
Full licence texts ship with each package. jSquash includes code from the Squoosh project, © Google Inc., licensed under the Apache License 2.0.
libheif, libde265 and libheif-js are used unmodified under the GNU Lesser General Public License 3.0. Their source code is at the links above. They run as a separate file, libheif.wasm, which your browser downloads only when it needs to open a HEIC photo.