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Version: 10.0

Open-Source Licenses

webPDF includes third-party open-source software. The complete list of components and the full text of every applicable license are distributed with the product in the THIRD-PARTY-LICENSES.txt file, located in the licenses folder of the webPDF installation directory.

Components under the GNU LGPL​

webPDF includes the following libraries licensed under the GNU Lesser General Public License, version 3 (LGPL-3.0):

  • libheif and libde265 — used to decode HEIF/HEIC (and AVIF) images. They are included (a) statically linked into the bundled ImageMagick image converter on the server, and (b) as a WebAssembly build used by the browser-based viewer for client-side HEIC preview.

Components under the GNU GPL​

The bundled ImageMagick image converter on the server statically links two components licensed under the GNU General Public License, version 2 (GPL-2.0) — jbigkit (JBIG image compression) and libwmf (Windows Metafile support). Because they are statically linked, the bundled ImageMagick executable is a GPL-2.0 combined work. webPDF runs it as a separate, independent program (mere aggregation), so this does not affect the license of webPDF itself; the ImageMagick executable's complete corresponding source is made available under the offer below.

The full text of the GNU LGPL v3, the GNU GPL v3 and the GNU GPL v2 is contained in THIRD-PARTY-LICENSES.txt.

Written offer for corresponding source code​

In accordance with Section 4 of the GNU LGPL v3, Section 6 of the GNU GPL v3 and Section 3 of the GNU GPL v2, SoftVision Development GmbH offers, valid for at least three (3) years from the date you received your copy of webPDF, to provide to any third party, upon request, the complete corresponding source code of the LGPL- and GPL-licensed components included in this product, together with the object/source code and build scripts required to relink those libraries and rebuild the combined component, for no more than the reasonable cost of performing the distribution.

How to obtain the source code​

Send a request to info@softvision.de and state your exact webPDF product version. We will reply with a download link to the corresponding-source package for that version.