Qt Documentation

Qt 5.12
Qt WebEngine
Qt WebEngine Licensing

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.

Third party licenses included in the sources are:

ARCore SDK	Apache 2.0
AXE-CORE Accessibility Audit	MPL 2.0
Abseil	Apache 2.0
Almost Native Graphics Layer Engine	BSD
Android Explicit Synchronization	Apache 2.0
Blackmagic DeckLink SDK - Mac	BSL (v 1.0)
BoringSSL	BSDish
Breakpad, An open-source multi-platform crash reporting system	New BSD, Apple PSL 2.0 and Apache 2.0
Brotli	MIT
CRC32C	New BSD
Chrome Custom Tabs - Example and Usage	Apache 2.0
ChromeVox	Apache 2.0
Chromium License	BSD
Chromium OS system API	BSD
Cocoa extension code from Camino	MPL 1.1/GPL 2.0/LGPL 2.1
Compact Encoding Detection	Apache 2.0
Compact Language Detector v3	Apache 2.0
Crashpad	Apache 2.0
Darwin	Apple Public Source License 2.0
David M. Gay's floating point routines	MIT-like
Expat XML Parser	MIT
Feed	Apache 2.0
Fiat-Crypto: Synthesizing Correct-by-Construction Code for Cryptographic Primitives	MIT
FlatBuffers	Apache 2.0
Flot Javascript/JQuery library for creating graphs	MIT
FreeType	Custom license "inspired by the BSD, Artistic, and IJG (Independent
GVR Android SDK	Apache 2.0
GVR Keyboard	Apache 2.0
GifPlayer Animated GIF Library	Apache License 2.0
Google fork of Khronos reference front-end for GLSL and ESSL	MIT
Headless Android Heap Analyzer	Apache 2.0, LGPL 2.1
IAccessible2 COM interfaces for accessibility	BSD
ISimpleDOM COM interfaces for accessibility	MPL 1.1/GPL 2.0/LGPL 2.1
Jinja2 Python Template Engine	BSD 3-Clause
Khronos header files	MIT/X11, SGI Free Software License B
LZMA SDK	Public Domain
LeakCanary	Apache 2.0
LevelDB: A Fast Persistent Key-Value Store	New BSD
Material Design Icons	Apache 2.0
Metrics Protos	BSD
NSBezierPath additions from Sean Patrick O'Brien	BSD
NVidia Control X Extension Library	MIT
Netscape Portable Runtime (NSPR)	MPL 1.1/GPL 2.0/LGPL 2.1
Network Security Services (NSS)	MPL 2
OTS (OpenType Sanitizer)	BSD
Oculus SDK for Windows	By exception only
OpenH264	2-Clause BSD
OpenMAX DL	BSD
OpenVR SDK	BSD 3-Clause
PDFium	BSD
PLY (Python Lex-Yacc)	BSD
Paul Hsieh's SuperFastHash	BSD
Perfetto	Apache2
Protocol Buffers	BSD
Quick Color Management System	MIT
Recurrent neural network for audio noise reduction	BSD 3-Clause
SMHasher	MIT, Public Domain
SPIR-V Tools	MIT
Skia	BSD
Snappy: A fast compressor/decompressor	New BSD
Strongtalk	BSD
Sudden Motion Sensor library	University of Illinois/NCSA Open Source License
SwiftShader	Apache 2.0 and compatible licenses
The Chromium Project	BSD 3-clause "New" or "Revised" License
The USB ID Repository	BSD
UnRAR source for decompressing .RAR and other files.	Non-standard
V8 JavaScript Engine	BSD
WDS	LGPL 2.1
Web Animations JS	Apache 2.0
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
Yara	BSD 3-Clause
bspatch	BSD 2-Clause License
d3	BSD 3-Clause
dom-distiller-js	BSD
dynamic annotations	BSD
fdlibm	Freely Distributable
ffmpeg	LGPL 2.1
fips181	BSD 3-Clause
flac	BSD
fontconfig	MIT
gestures	MIT
google-glog's symbolization library	BSD
google-jstemplate	Apache 2.0
harfbuzz-ng	MIT
hunspell	MPL 1.1/GPL 2.0/LGPL 2.1
iccjpeg	Custom license
icu	MIT
inspector protocol	BSD
jsoncpp	MIT
libFuzzer	University of Illinois/NCSA Open Source
libaddressinput	Apache 2.0
libevdev	MIT
libevent	BSD
libjingle XMPP and xmllite libraries	BSD
libjpeg	Custom license
libjpeg-turbo	Custom license
libpng	libpng license
libprotobuf-mutator	Apache 2.0
libsecret	LGPL 2.1
libsrtp	3-clause BSD
libudev	LGPL 2.1
libusbx	LGPL 2.1
libvpx	BSD
libxml	MIT
libxslt	MIT
libyuv	BSD
linux-syscall-support	BSD
mach_override	MIT and 2-clause BSD
mesa	MIT and LGPL v2
minigbm	BSD
modp base64 decoder	BSD
nmoinvaz/minizip	Custom license
opus	BSD
pyjson5	Apache 2.0
re2 - an efficient, principled regular expression library	BSD 3-Clause
sfntly	Apache 2.0
simplejson	MIT
sqlite	Public domain
tcmalloc	BSD
test_fonts	SIL OPEN FONT LICENSE, GPL v2, Bitstream Vera Fonts Copyright
tlslite	Public domain and BSD
url_parse	BSD and MPL 1.1/GPL 2.0/LGPL 2.1
usrsctp	New BSD
v4l-utils	LGPL 2.1
valgrind	BSD
woff2	MIT
xdg-mime	Academic Free License version 2.0 or LGPL v2
xdg-user-dirs	MIT
xdg-utils	MIT
yasm	2-clause or 3-clause BSD licensed, with the exception of bitvect, which is triple-licensed under the Artistic license, GPL, and LGPL
zlib	Custom license

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