MRKCAL Tools Core: GPL-3.0-or-later
pdf-lib 1.17.1: MIT; https://github.com/Hopding/pdf-lib
PDF.js 6.3.289: Apache-2.0; https://github.com/mozilla/pdf.js
fflate 0.8.3: MIT; https://github.com/101arrowz/fflate
jsdiff 9.0.0: BSD-3-Clause; https://github.com/kpdecker/jsdiff
heic-to 1.6.6: LGPL-3.0; https://github.com/hoppergee/heic-to/tree/v1.6.6
libheif 1.23.6: LGPL-3.0; https://github.com/strukturag/libheif/tree/v1.23.6
libde265 1.0.16: LGPL-3.0; https://github.com/strukturag/libde265/tree/v1.0.16
HEIC build instructions: https://github.com/hoppergee/heic-to#development-guide
Source archives: https://mrkcaltools.com/wp-content/uploads/2026/10/mrkcal-open-source-archives-1.6.6.zip . Components are unmodified upstream browser distributions.
docx-preview 0.4.1: Apache-2.0; https://github.com/VolodymyrBaydalka/docxjs
JSZip 3.10.2: MIT (dual licensed MIT or GPLv3); https://github.com/Stuk/jszip
html2canvas 1.4.1: MIT; https://github.com/niklasvh/html2canvas

MRKCAL growth dependencies
qrcode 1.5.4 — MIT — see licenses/qrcode.txt
jsqr 1.4.0 — Apache-2.0 — see licenses/jsqr.txt
upng-js 2.1.0 — MIT — see licenses/upng-js.txt
pako 1.0.11 — (MIT AND Zlib) — see licenses/pako.txt
tesseract.js 7.0.0 — Apache-2.0 — see licenses/tesseract.js.txt
tesseract.js-core 7.0.0 — Apache-2.0 — see licenses/tesseract.js-core.txt