Open-source licences

Last updated 2026-09-14

FreeMicroTools is built mostly from its own code. A few parts come from open-source projects, and their authors keep their copyright. Each is listed below with its licence and a link to its source code.

pdf-lib 1.17.1

Reading and writing PDF files in the PDF tools (including the HEIC to PDF Converter), the Passport Photo Maker and the GST Invoice Generator.

Licence: MIT (full text)
Copyright (c) 2019 Andrew Dillon
Source code: github.com/Hopding/pdf-lib
Includes: pako (MIT and Zlib), @pdf-lib/standard-fonts (MIT), @pdf-lib/upng (MIT), tslib (0BSD, Copyright (c) Microsoft Corporation)

libheif-js 1.23.2

Opening HEIC and HEIF photos in the HEIC to JPG and HEIC to PDF converters, in browsers that cannot open them themselves.

Licence: GNU LGPL 3.0 (full text)
Copyright the libheif-js, libheif and libde265 authors
Source code: github.com/catdad-experiments/libheif-js
Includes: libheif (GNU LGPL 3.0), libde265 (GNU LGPL 3.0)

This library is used unmodified and is loaded as its own separate file, so it can be replaced with another build of the same library. Its complete source code is available from the links above, and the full GNU LGPL and GPL texts are in the licence file.

Tabler Icons

The outline icons used across the site.

Licence: MIT
Copyright (c) 2020-2026 Paweł Kuna
Source code: github.com/tabler/tabler-icons

Outfit

The lettering of the FreeMicroTools logo, drawn as shapes. The font itself is not loaded by the site.

Licence: SIL Open Font License 1.1 (full text)
Source code: github.com/Outfitio/Outfit-Fonts

MIT License text

The MIT-licensed parts above are provided under these terms, with the copyright notices listed for each.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.