- Qt 5.15
- Qt WebEngine
- Qt WebEngine Licensing
- Qt 5.15.19 Reference Documentation

# 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:

ANGLE array bounds clamper from WebKit | BSD
ARCore SDK | Apache 2.0
ARCore SDK client library for Chrome | Apache 2.0
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
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
C++ port of zxcvbn, an advanced password strength estimation library. | MIT
CRC32C | New BSD
Chromium License | BSD
Chromium OS system API | BSD
CityHash | MIT
Closure compiler | Apache 2.0
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
Dawn | Apache 2.0
Emoji Segmenter | Apache 2.0
Expat XML Parser | MIT
Fiat-Crypto: Synthesizing Correct-by-Construction Code for Cryptographic Primitives | MIT
FideltyFX Single Pass Downsampler | MIT
FlatBuffers | Apache 2.0
FreeType | Custom license &quot;inspired by the BSD, Artistic, and IJG (Independent
Fuse.js | Apache License, Version 2.0
GVR Android SDK | Apache 2.0
GVR Keyboard | Apache 2.0
GifPlayer Animated GIF Library | Apache License 2.0
Google Closure Library | Apache 2.0
Google Double Conversion | BSD
Google Ink | Apache 2.0
Headers for the Windows 10 WebAuthn API (webauthn.dll) | MIT
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
Khronos reference front-end for GLSL and ESSL | MIT
LZMA SDK | LZMA-SDK-9.22
LevelDB: A Fast Persistent Key-Value Store | New BSD
Lottie Web | MIT
Material Design Icons | Apache 2.0
Metrics Protos | BSD
NVidia Control X Extension Library | MIT
Nearby Connections Library | Apache 2.0
Netscape Portable Runtime (NSPR) | MPL 1.1/GPL 2.0/LGPL 2.1
Netwide Assembler | 2-Clause BSD
Network Security Services (NSS) | MPL 2
OTS (OpenType Sanitizer) | BSD
Oculus SDK for Windows | By exception only
One Euro Filter | BSD
Open Screen Protocol Library | BSD
OpenCV | BSD
OpenH264 | 2-Clause BSD
PDFium | BSD
PFFFT: a pretty fast FFT. | BSD-like
PLY (Python Lex-Yacc) | BSD
PSM (Private Set Membership) client side | Apache Version 2.0
Paul Hsieh&#x27;s SuperFastHash | BSD
Perfetto | Apache2
Polymer | BSD
Private Join and Compute subset | Apache 2.0
Protocol Buffers | BSD
QUICHE | BSD
Quick Color Management System | MIT
Recurrent neural network for audio noise reduction | BSD 3-Clause
SMHasher | MIT, Public Domain
SPIR-V Headers | MIT
SPIR-V Tools | Apache 2.0
SPIRV-Cross | Apache 2.0
Schema.org is a collaborative, community activity with a mission to | Creative Commons Attribution-ShareAlike 3.0 Unported
Secure Message | Apache 2.0
Shaderc | Apache 2.0
Shaka Player | Apache 2.0
Simple Homomorphic Encryption Library with Lattices | Apache Version 2.0
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
Text Fragments Polyfill | Apache 2.0
The Chromium Project | BSD 3-clause &quot;New&quot; or &quot;Revised&quot; License
The USB ID Repository | BSD
Tint | Apache 2.0
UKey2 | Apache 2.0
URI Template Parser | Apache 2.0
V8 JavaScript Engine | BSD
Vulkan API headers | Apache 2.0
VulkanMemoryAllocator | MIT
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
Weston - reference Wayland compositor | MIT &quot;Expat&quot;
Windows Template Library (WTL) | Microsoft Permissive License
Wuffs (Wrangling Untrusted File Formats Safely) | Apache 2.0
d3 | BSD 3-Clause
dav1d is an AV1 decoder :) | 2-Clause BSD
dom-distiller-js | BSD
dynamic annotations | BSD
fdlibm | Freely Distributable
ffmpeg | LGPL 2.1
flac | BSD
fontconfig | MIT
google-glog&#x27;s symbolization library | BSD
google-jstemplate | Apache 2.0
harfbuzz-ng | MIT
hunspell | MPL 1.1/GPL 2.0/LGPL 2.1
hyphenation-patterns | MIT, MPL 1.1/GPL 2.0/LGPL 2.1, GNU Lesser Public License, Unicode License, Unicode Data License, custom notice license, custom permissive license
iccjpeg | Custom license
icu | MIT
inspector protocol | BSD
jsoncpp | MIT
libaddressinput | Apache 2.0
libavif - Library for encoding and decoding .avif files | 2-Clause BSD
libbrlapi | LGPL 2.1
libevent | BSD
libgif codec for Skia | MPL-1.1/GPL-2.0/LGPL-2.1 + BSD-3-Clause + BSD-2-Clause
libipp | BSD
libjingle XMPP and xmllite libraries | BSD
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
mesa_headers | MIT and SGI Free Software B License Version 2.0
minigbm | BSD
modp base64 decoder | BSD
nmoinvaz/minizip | Custom license
opus | BSD
pyjson5 | Apache 2.0
pywebsocket3 | New BSD
re2 - an efficient, principled regular expression library | BSD 3-Clause
simplejson | MIT
six | Apache License, Version 2.0
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
xxHash | BSD
zlib | Custom license