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Open-source licences

FixnFigure is built on open-source work. Thank you to the people who make it.

ComponentWhat it does hereLicence
AstroBuilds the websiteMIT
pdf-libCreates and edits PDF filesMIT
@cantoo/pdf-libCreates, edits and encrypts PDF filesMIT
PDF.jsReads and displays PDF pagesApache-2.0
Tesseract.jsText recognition (OCR)Apache-2.0
heic2anyConverts iPhone HEIC photosMIT
libheif (bundled inside heic2any)Decodes HEIC imagesLGPL-3.0
ONNX Runtime WebRuns the background-removal AI model in your browserMIT
MODNet (code and pretrained model)Background removal (portrait matting) model, self-hostedApache-2.0
oxipngLossless PNG optimisationMIT
jSquash (@jsquash/oxipng)Runs oxipng in the browserApache-2.0
signature_padDrawing signaturesMIT
Lexend (font)Site typefaceSIL Open Font License 1.1

About the LGPL component

The HEIC converter uses libheif, licensed under the GNU Lesser General Public License v3. It is loaded as a separate, unmodified file only when you convert a HEIC photo. Its source code is available from the libheif project linked above, and you are free to replace it under the terms of the LGPL.