Licenses and Third-Party Components

So that converters can work right in your browser, wandlio.de delivers third-party software to your browser. This page lists each of these components with its version, license and copyright notice; each name links to the source code.

The complete license texts of all components are in one file: drittanbieter.txt.

As of October 19, 2026

FFmpeg (ffmpeg.wasm) – GNU General Public License

The audio and video converters load the files /ffmpeg/ffmpeg-core.js and /ffmpeg/ffmpeg-core.wasm on first use. They contain FFmpeg 5.1.4, compiled to WebAssembly with Emscripten 3.1.40, and are byte-identical to the npm package @ffmpeg/core 0.12.10 of the ffmpeg.wasm project (directory dist/esm; also identical to version 0.12.9).

  • License: GNU General Public License, version 2 or (at your option) any later version (GPL-2.0-or-later), license text. This is stated in the package and in the license output of the delivered build (ffmpeg -L).
  • Why GPL: The build was configured with --enable-gpl and includes the GPL libraries x264 and x265.
  • Copyright: Copyright (c) 2000-2023 the FFmpeg developers; ffmpeg.wasm build scripts: Copyright (c) 2019 Jerome Wu (MIT)
  • Build configuration: --enable-gpl --enable-libx264 --enable-libx265 --enable-libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libopus --enable-zlib --enable-libwebp --enable-libfreetype --enable-libfribidi --enable-libass --enable-libzimg
  • SHA-256:
    ffmpeg-core.wasm 9f57947a5bd530d8f00c5b3f2cb2a3492faa7e5d823315342d6a8656d0a6b7b7
    ffmpeg-core.js 67a48f11645f85439f3fde4f2119042c16b374b910206b7a7a24f342e28dcae3

Source code

Written offer: We will give any third party, on request, a complete machine-readable copy of the corresponding source code: FFmpeg, all libraries listed below in the versions used and the build scripts of ffmpeg.wasm v12.15, as well as the source of the Liberation Sans 1.07.4 font included with pdf.js. You will receive a download link. On request we will send a physical medium and only charge the cost of the medium and shipping. This offer is valid for at least three years from the day we last delivered the respective version. Requests to Info@MB-ITiL.de or to the address in the Legal Notice.

Libraries included in the FFmpeg build

The complete license texts of these libraries are in drittanbieter.txt.

JavaScript and WebAssembly libraries

Audio and video (FFmpeg control)

Load the FFmpeg core in a web worker and pass files to it. The precompiled worker script /ffmpeg/worker.js comes from the same project.

  • @ffmpeg/ffmpeg 0.12.15

    License: MIT · MIT License

    Copyright (c) 2019 Jerome Wu

    Copyright as stated in the repository LICENSE; the npm package has no LICENSE file of its own.

  • @ffmpeg/util 0.12.2

    License: MIT · MIT License

    Copyright (c) 2019 Jerome Wu

Audio with the browser’s codecs

Reads and writes MP4/M4A, ADTS and WAV in the browser. AAC is encoded and decoded by the browser’s built-in codecs (WebCodecs), not by code of its own.

  • mediabunny 1.61.3

    License: MPL-2.0 · Mozilla Public License 2.0

    Copyright (c) 2026-present, Vanilagy and contributors

    Copyright as stated in the header of the shipped files; the LICENSE file contains only the license text.

Images and PDF

  • ag-psd 30.1.1

    License: MIT · MIT License

    Copyright (c) 2016 Agamnentzar

    Reads PSD files.

  • pdf-lib 1.17.1

    License: MIT · MIT License

    Copyright (c) 2019 Andrew Dillon

    Creates PDF files from images.

  • jsPDF 4.2.1

    License: MIT · MIT License

    (c) 2010-2025 James Hall; (c) 2015-2025 yWorks GmbH

    Creates PDF files from text.

  • gifenc 1.0.3

    License: MIT · MIT License

    Copyright (c) 2017 Matt DesLauriers

    Writes GIF files.

  • @jsquash/avif 2.1.1

    License: Apache-2.0 · Apache License 2.0

    Copyright [2023] jamsinclair

    Writes AVIF files. Contains, compiled to WebAssembly, libavif 1.0.1 (2-clause BSD license, Copyright 2019 Joe Drago) and libaom 3.7.0 (BSD-2-Clause, Copyright (c) 2016, Alliance for Open Media; plus the AOM Patent License 1.0).

  • @jsquash/webp 1.5.0

    License: Apache-2.0 · Apache License 2.0

    Copyright [2023] jamsinclair

    Writes WebP files. Contains libwebp compiled to WebAssembly (BSD license, Copyright (c) 2010, Google Inc.).

  • wasm-feature-detect 1.9.0

    License: Apache-2.0 · Apache License 2.0

    Copyright 2017 Google Inc.

Dependencies of the image and PDF libraries

Optional jsPDF modules

These modules are delivered as separate files but only loaded for certain jsPDF functions.

PDF → JPG (pdf.js)

pdf.js and its web worker are only loaded when converting. pdf.js loads the additional files under /pdfjs/6.4.299/ (character maps, substitute fonts, WebAssembly decoders, a colour profile) only when a PDF needs them. All license files are included in the npm package pdfjs-dist 6.4.299.

  • pdf.js (pdfjs-dist) 6.4.299

    License: Apache-2.0 · Apache License 2.0

    Copyright 2024 Mozilla Foundation

    Renders the PDF pages (legacy build) in a web worker.

  • Adobe CMaps pdfjs-dist 6.4.299

    License: BSD-3-Clause · BSD 3-Clause License

    Copyright 1990-2009 Adobe Systems Incorporated. All rights reserved.

    Character maps for Chinese, Japanese and Korean fonts (folder cmaps, license in cmaps/LICENSE).

  • Foxit-Ersatzschriften (aus PDFium) pdfjs-dist 6.4.299

    License: BSD-3-Clause · BSD 3-Clause License

    Copyright 2014 PDFium Authors

    FoxitSerif, FoxitFixed, FoxitSymbol, FoxitDingbats: substitutes for non-embedded standard fonts (Times, Courier, Symbol, ZapfDingbats).

  • Liberation Sans 1.07.4

    License: GPL-2.0 WITH Font-exception-2.0 · GNU General Public License 2.0

    Copyright (c) 2007 Red Hat, Inc.

    Substitute for non-embedded Helvetica/Arial. License per license file: GNU GPL v2 with an exception for documents that embed the font. “LIBERATION” is a trademark of Red Hat, Inc. The delivered font files and their license are in the linked npm package (folder standard_fonts); project: github.com/liberationfonts. You can get the source code (liberation-fonts 1.07.4) through the written offer in the source code section above.

  • OpenJPEG (WebAssembly) pdfjs-dist 6.4.299

    License: BSD-2-Clause · BSD 2-Clause License

    Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium; Copyright (c) 2002-2014, Professor Benoit Macq; Copyright (c) 2024, Mozilla Foundation

    Decodes JPEG 2000 images in PDFs. Further copyright holders are listed in the license file wasm/LICENSE_OPENJPEG in the npm package; the pdf.js adaptation (Mozilla Foundation) is also under BSD-2-Clause.

  • JBIG2-Decoder (WebAssembly, aus PDFium) pdfjs-dist 6.4.299

    License: BSD-3-Clause AND Apache-2.0 · BSD 3-Clause License, Apache License 2.0

    Copyright 2014 The PDFium Authors; Copyright 2026 Mozilla Foundation

    Decodes JBIG2 and CCITT fax scans in PDFs. pdf.js adaptation under Apache-2.0.

  • qcms (WebAssembly) pdfjs-dist 6.4.299

    License: MIT · MIT License

    Copyright (C) 2009-2024 Mozilla Corporation; Copyright (C) 1998-2007 Marti Maria

    Colour management (ICC profiles).

  • CGATS001Compat-v2-micro.icc pdfjs-dist 6.4.299

    License: CC0-1.0 · Creative Commons Zero 1.0

    CMYK colour profile for PDFs without their own profile.

Fonts to WOFF2 (woff2)

TTF → WOFF2 and OTF → WOFF2 use Google’s woff2 library compiled to WebAssembly. It is embedded in the script of the npm package woff2-encoder 2.0.0, only loaded when converting and run in a web worker. According to the package’s Dockerfile and Makefile (tag v2.0.0), it is built with Emscripten 3.1.46 from google/woff2 (revision 4721483 of March 30, 2022) and the Brotli 1.0.3 bundled with it. The npm package only contains its own license file; license and copyright of woff2 and Brotli come from their license files at these revisions.

  • woff2-encoder 2.0.0

    License: MIT · MIT License

    Copyright (c) 2023-PRESENT Kyedo <https://github.com/itskyedo>

    JavaScript wrapper and build of the WebAssembly file (encoder and decoder in one script).

  • woff2 (Google) Commit 4721483 (30.03.2022)

    License: MIT · MIT License

    Copyright (c) 2013-2017 by the WOFF2 Authors.

    Encodes and decodes WOFF2 (glyf/loca transform); the converter uses the decoder to check every result.

  • Brotli 1.0.3

    License: MIT · MIT License

    Copyright (c) 2009, 2010, 2013-2016 by the Brotli Authors.

    Compression in WOFF2; revision per the google/woff2 submodule.

  • Emscripten (Laufzeitcode) 3.1.46

    License: MIT OR NCSA · MIT License, University of Illinois/NCSA Open Source License

    Copyright (c) 2010-2014 Emscripten authors, see AUTHORS file.

    Runtime code generated by the compiler in the script and the WebAssembly file, plus parts of musl libc (MIT, Copyright © 2005-2020 Rich Felker, et al.); listed in LICENSE-THIRD-PARTY of the woff2-encoder repository.

Website framework

  • Svelte 5.55.5

    License: MIT · MIT License

    Copyright (c) 2016-2025 Svelte Contributors (github.com/sveltejs/svelte/graphs/contributors)

  • SvelteKit (@sveltejs/kit) 2.59.1

    License: MIT · MIT License

    Copyright (c) 2020 these people (github.com/sveltejs/kit/graphs/contributors)

  • devalue 5.8.0

    License: MIT · MIT License

    Copyright (c) 2018-19 these people (github.com/rich-harris/devalue/graphs/contributors)

  • esm-env 1.2.2

    License: MIT · MIT License

    Copyright 2022 Benjamin McCann

Error tracking

The SDK is loaded after the page has loaded and reports errors, sessions and a sample of performance data to our self-hosted GlitchTip instance (details in the privacy policy).

Fonts

The license text is next to the font files: /fonts/inter/LICENSE.txt.

  • Inter 4.001 (InterVariable), 4.000 (Inter-Regular, Inter-Bold)

    License: OFL-1.1 · SIL Open Font License 1.1

    Copyright 2016 The Inter Project Authors

    The website loads InterVariable.woff2 (Latin subset). According to the font file, “Inter” is a trademark of rsms.

Server only

These libraries create the preview images under /og/ on our server (for example for social networks). They are not delivered to your browser, only the finished image is. The server converters also use programs on our server; they are not delivered either and are not listed here individually.

Questions about licenses

Write to us at Info@MB-ITiL.de. Details about the operator are in the Legal Notice.