Conversiebibliotheken staan ongewijzigd of gebundeld in ../vendor.
Versies zijn vastgezet in package-lock.json.
libheif-js 1.23.5: LGPL-3.0; dynamische module apart vervangbaar: ../vendor/libheif.mjs.
Bron en bouwinstructies: https://github.com/catdad-experiments/libheif-js/tree/v1.23.5
Upstream bron: https://github.com/strukturag/libheif
Licentie: https://www.gnu.org/licenses/lgpl-3.0.txt
Andere bronnen: https://github.com/mozilla/pdf.js, https://github.com/Hopding/pdf-lib, https://github.com/photopea/UTIF.js, https://github.com/mattdesl/gifenc, https://github.com/Agamnentzar/ag-psd, https://github.com/jamsinclair/jSquash, https://github.com/101arrowz/fflate.