- Qt 6.5
- Qt WebEngine
- Qt WebEngine Licensing
- Qt 6.5.1 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:

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 &quot;New&quot; or &quot;Revised&quot; 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&#x27;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