Qt WebEngine Licensing

The Qt specific parts of the Qt WebEngine module are dual-licensed under Commercial and GNU Lesser General Public License (LGPLv3). In addition, the module contains code licensed under LGPLv2.

The module includes a snapshot of Chromium. As such, users need to respect the licenses of Chromium, and third-party code included in Chromium. The arguably most restrictive license to be respected by all users is LGPLv2.1.

Note: Any GPL licenses listed below are only used to access Linux system resources. Qt WebEngine does not link to nor distribute GPL binary code, and it does not affect users of Qt WebEngine.

Third party licenses included in the sources are:

AXE-CORE Accessibility Audit	MPL 2.0
Abseil	Apache 2.0
Alliance for Open Media Video Codec	BSD
Almost Native Graphics Layer Engine	BSD
Android Explicit Synchronization	Apache 2.0
BoringSSL	BSDish
Brotli	MIT
CRC32C	New BSD
Chromium License	BSD
CodeMirror 6	MIT
Compact Encoding Detection	Apache 2.0
Compact Language Detector v3	Apache 2.0
Crashpad	Apache 2.0
Dawn	Apache 2.0
Devtools-Frontend	BSD
Emoji Segmenter	Apache 2.0
Expat XML Parser	MIT
Fiat-Crypto: Synthesizing Correct-by-Construction Code for Cryptographic Primitives	MIT
FlatBuffers	Apache 2.0
Google Double Conversion	BSD
Headers for the Windows 10 WebAuthn API (webauthn.dll)	MIT
Lighthouse	Apache License 2.0
NVidia Control X Extension Library	MIT
OTS (OpenType Sanitizer)	BSD
One Euro Filter	BSD
PDFium	BSD
PFFFT: a pretty fast FFT.	BSD-like
Perfetto	Apache2
Protocol Buffers	BSD
Recurrent neural network for audio noise reduction	BSD 3-Clause
Snappy: A fast compressor/decompressor	New BSD
The Chromium Project	BSD 3-clause "New" or "Revised" License
The Incremental Distributed Point Functions library	Apache 2.0
V8 fork of fdlibm	fdlibm license
Volk Meta loader for Vulkan API	MIT
Vulkan Deps	BSD
VulkanMemoryAllocator	MIT
WebKit	BSD and LGPL v2 and LGPL v2.1
WebM container parser and writer.	BSD
WebP image encoder/decoder	BSD
WebRTC	BSD
Windows Template Library (WTL)	Microsoft Permissive License
Wuffs (Wrangling Untrusted File Formats Safely)	Apache 2.0
cpuinfo	BSD
dav1d is an AV1 decoder :)	2-Clause BSD
dynamic annotations	BSD
ffmpeg	LGPL 2.1
fontconfig	MIT
google-glog's symbolization library	BSD
harfbuzz-ng	MIT
hunspell	MPL 1.1/GPL 2.0/LGPL 2.1
iccjpeg	Custom license
icu	MIT
inspector protocol	BSD
ipcz	BSD
jsoncpp	MIT
libavif - Library for encoding and decoding .avif files	2-Clause BSD
libevent	BSD
libgav1	Apache 2.0
libpng	libpng license
libsrtp	3-clause BSD
libvpx	BSD
libxml	MIT
libxslt	MIT
libyuv	BSD
mesa_headers	MIT and SGI Free Software B License Version 2.0
modp base64 decoder	BSD
opus	BSD
re2 - an efficient, principled regular expression library	BSD 3-Clause
sqlite	Public domain
woff2	MIT
xdg-mime	Academic Free License version 2.0 or LGPL v2
xdg-user-dirs	MIT
zlib	Custom license

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