![](//d33sqmjvzgs8hq.cloudfront.net/wp- content/themes/oneqt/assets/images/cookie_small.png) We bake cookies in your browser for a better experience. Using this site means that you consent. [Read More](//qt.io/terms-conditions/) Menu * [ Partners ](//qt.io/partners/) * [ Blog ](https://blog.qt.io/) [ ](https://qt.io/) * [Download](https://qt.io/download/) * [Device Creation](https://www.qt.io/qt-for-device-creation/) * [Application Development](https://www.qt.io/application-development/) * [Services](https://www.qt.io/services/) * [Developers](https://www.qt.io/developers/) * [EN](https://qt.io/support/) * [RU](https://qt.io/ru/) * [ZH](https://qt.io/zh-hans/) # * [Wiki](https://wiki.qt.io/) * [Documentation](https://doc.qt.io/) * [Forum](https://forum.qt.io/) * [Bug Reports](https://bugreports.qt.io/) * [Code Review](https://codereview.qt-project.org/) * [Resource Center](https://resources.qt.io/) * [Qt Extensions](https://marketplace.qt.io/) # Qt Documentation * [Qt 5.12](index.html) * [Qt WebEngine](qtwebengine-index.html) * 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](qtwebengine-3rdparty-arcore-sdk.html) | Apache 2.0 ---|--- [AXE-CORE Accessibility Audit](qtwebengine-3rdparty-axe-core-accessibility- audit.html) | MPL 2.0 [Abseil](qtwebengine-3rdparty-abseil.html) | Apache 2.0 [Almost Native Graphics Layer Engine](qtwebengine-3rdparty-almost-native- graphics-layer-engine.html) | BSD [Android Explicit Synchronization](qtwebengine-3rdparty-android-explicit- synchronization.html) | Apache 2.0 [Blackmagic DeckLink SDK - Mac](qtwebengine-3rdparty-blackmagic-decklink-sdk- mac.html) | BSL (v 1.0) [BoringSSL](qtwebengine-3rdparty-boringssl.html) | BSDish [Breakpad, An open-source multi-platform crash reporting system](qtwebengine-3rdparty-breakpad-an-open-source-multi-platform-crash- reporting-system.html) | New BSD, Apple PSL 2.0 and Apache 2.0 [Brotli](qtwebengine-3rdparty-brotli.html) | MIT [CRC32C](qtwebengine-3rdparty-crc32c.html) | New BSD [Chrome Custom Tabs - Example and Usage](qtwebengine-3rdparty-chrome-custom- tabs-example-and-usage.html) | Apache 2.0 [ChromeVox](qtwebengine-3rdparty-chromevox.html) | Apache 2.0 [Chromium License](qtwebengine-3rdparty-chromium-global.html) | BSD [Chromium OS system API](qtwebengine-3rdparty-chromium-os-system-api.html) | BSD [Cocoa extension code from Camino](qtwebengine-3rdparty-cocoa-extension-code- from-camino.html) | MPL 1.1/GPL 2.0/LGPL 2.1 [Compact Encoding Detection](qtwebengine-3rdparty-compact-encoding- detection.html) | Apache 2.0 [Compact Language Detector v3](qtwebengine-3rdparty-compact-language- detector-v3.html) | Apache 2.0 [Crashpad](qtwebengine-3rdparty-crashpad.html) | Apache 2.0 [Darwin](qtwebengine-3rdparty-darwin.html) | Apple Public Source License 2.0 [David M. Gay's floating point routines](qtwebengine-3rdparty-david-m-gay-s- floating-point-routines.html) | MIT-like [Expat XML Parser](qtwebengine-3rdparty-expat-xml-parser.html) | MIT [Feed](qtwebengine-3rdparty-feed.html) | Apache 2.0 [Fiat-Crypto: Synthesizing Correct-by-Construction Code for Cryptographic Primitives](qtwebengine-3rdparty-fiat-crypto-synthesizing-correct-by- construction-code-for-cryptographic-primitives.html) | MIT [FlatBuffers](qtwebengine-3rdparty-flatbuffers.html) | Apache 2.0 [Flot Javascript/JQuery library for creating graphs](qtwebengine-3rdparty- flot-javascript-jquery-library-for-creating-graphs.html) | MIT [FreeType](qtwebengine-3rdparty-freetype.html) | Custom license "inspired by the BSD, Artistic, and IJG (Independent [GVR Android SDK](qtwebengine-3rdparty-gvr-android-sdk.html) | Apache 2.0 [GVR Keyboard](qtwebengine-3rdparty-gvr-keyboard.html) | Apache 2.0 [GifPlayer Animated GIF Library](qtwebengine-3rdparty-gifplayer-animated-gif- library.html) | Apache License 2.0 [Google fork of Khronos reference front-end for GLSL and ESSL](qtwebengine-3rdparty-google-fork-of-khronos-reference-front-end-for- glsl-and-essl.html) | MIT [Headless Android Heap Analyzer](qtwebengine-3rdparty-headless-android-heap- analyzer.html) | Apache 2.0, LGPL 2.1 [IAccessible2 COM interfaces for accessibility](qtwebengine-3rdparty- iaccessible2-com-interfaces-for-accessibility.html) | BSD [ISimpleDOM COM interfaces for accessibility](qtwebengine-3rdparty-isimpledom- com-interfaces-for-accessibility.html) | MPL 1.1/GPL 2.0/LGPL 2.1 [Jinja2 Python Template Engine](qtwebengine-3rdparty-jinja2-python-template- engine.html) | BSD 3-Clause [Khronos header files](qtwebengine-3rdparty-khronos-header-files.html) | MIT/X11, SGI Free Software License B [LZMA SDK](qtwebengine-3rdparty-lzma-sdk.html) | Public Domain [LeakCanary](qtwebengine-3rdparty-leakcanary.html) | Apache 2.0 [LevelDB: A Fast Persistent Key-Value Store](qtwebengine-3rdparty-leveldb-a- fast-persistent-key-value-store.html) | New BSD [Material Design Icons](qtwebengine-3rdparty-material-design-icons.html) | Apache 2.0 [Metrics Protos](qtwebengine-3rdparty-metrics-protos.html) | BSD [NSBezierPath additions from Sean Patrick O'Brien](qtwebengine-3rdparty- nsbezierpath-additions-from-sean-patrick-o-brien.html) | BSD [NVidia Control X Extension Library](qtwebengine-3rdparty-nvidia-control-x- extension-library.html) | MIT [Netscape Portable Runtime (NSPR)](qtwebengine-3rdparty-netscape-portable- runtime-nspr.html) | MPL 1.1/GPL 2.0/LGPL 2.1 [Network Security Services (NSS)](qtwebengine-3rdparty-network-security- services-nss.html) | MPL 2 [OTS (OpenType Sanitizer)](qtwebengine-3rdparty-ots-opentype-sanitizer.html) | BSD [Oculus SDK for Windows](qtwebengine-3rdparty-oculus-sdk-for-windows.html) | By exception only [OpenH264](qtwebengine-3rdparty-openh264.html) | 2-Clause BSD [OpenMAX DL](qtwebengine-3rdparty-openmax-dl.html) | BSD [OpenVR SDK](qtwebengine-3rdparty-openvr-sdk.html) | BSD 3-Clause [PDFium](qtwebengine-3rdparty-pdfium.html) | BSD [PLY (Python Lex-Yacc)](qtwebengine-3rdparty-ply-python-lex-yacc.html) | BSD [Paul Hsieh's SuperFastHash](qtwebengine-3rdparty-paul-hsieh-s- superfasthash.html) | BSD [Perfetto](qtwebengine-3rdparty-perfetto.html) | Apache2 [Protocol Buffers](qtwebengine-3rdparty-protocol-buffers.html) | BSD [Quick Color Management System](qtwebengine-3rdparty-quick-color-management- system.html) | MIT [Recurrent neural network for audio noise reduction](qtwebengine-3rdparty- recurrent-neural-network-for-audio-noise-reduction.html) | BSD 3-Clause [SMHasher](qtwebengine-3rdparty-smhasher.html) | MIT, Public Domain [SPIR-V Tools](qtwebengine-3rdparty-spir-v-tools.html) | MIT [Skia](qtwebengine-3rdparty-skia.html) | BSD [Snappy: A fast compressor/decompressor](qtwebengine-3rdparty-snappy-a-fast- compressor-decompressor.html) | New BSD [Strongtalk](qtwebengine-3rdparty-strongtalk.html) | BSD [Sudden Motion Sensor library](qtwebengine-3rdparty-sudden-motion-sensor- library.html) | University of Illinois/NCSA Open Source License [SwiftShader](qtwebengine-3rdparty-swiftshader.html) | Apache 2.0 and compatible licenses [The Chromium Project](qtwebengine-3rdparty-the-chromium-project.html) | BSD 3-clause "New" or "Revised" License [The USB ID Repository](qtwebengine-3rdparty-the-usb-id-repository.html) | BSD [UnRAR source for decompressing .RAR and other files.](qtwebengine-3rdparty- unrar-source-for-decompressing-rar-and-other-files.html) | Non-standard [V8 JavaScript Engine](qtwebengine-3rdparty-v8-javascript-engine.html) | BSD [WDS](qtwebengine-3rdparty-wds.html) | LGPL 2.1 [Web Animations JS](qtwebengine-3rdparty-web-animations-js.html) | Apache 2.0 [WebKit](qtwebengine-3rdparty-webkit.html) | BSD and LGPL v2 and LGPL v2.1 [WebM container parser and writer.](qtwebengine-3rdparty-webm-container- parser-and-writer.html) | BSD [WebP image encoder/decoder](qtwebengine-3rdparty-webp-image-encoder- decoder.html) | BSD [WebRTC](qtwebengine-3rdparty-webrtc.html) | BSD [Windows Template Library (WTL)](qtwebengine-3rdparty-windows-template- library-wtl.html) | Microsoft Permissive License [Yara](qtwebengine-3rdparty-yara.html) | BSD 3-Clause [bspatch](qtwebengine-3rdparty-bspatch.html) | BSD 2-Clause License [d3](qtwebengine-3rdparty-d3.html) | BSD 3-Clause [dom-distiller-js](qtwebengine-3rdparty-dom-distiller-js.html) | BSD [dynamic annotations](qtwebengine-3rdparty-dynamic-annotations.html) | BSD [fdlibm](qtwebengine-3rdparty-fdlibm.html) | Freely Distributable [ffmpeg](qtwebengine-3rdparty-ffmpeg.html) | LGPL 2.1 [fips181](qtwebengine-3rdparty-fips181.html) | BSD 3-Clause [flac](qtwebengine-3rdparty-flac.html) | BSD [fontconfig](qtwebengine-3rdparty-fontconfig.html) | MIT [gestures](qtwebengine-3rdparty-gestures.html) | MIT [google-glog's symbolization library](qtwebengine-3rdparty-google-glog-s- symbolization-library.html) | BSD [google-jstemplate](qtwebengine-3rdparty-google-jstemplate.html) | Apache 2.0 [harfbuzz-ng](qtwebengine-3rdparty-harfbuzz-ng.html) | MIT [hunspell](qtwebengine-3rdparty-hunspell.html) | MPL 1.1/GPL 2.0/LGPL 2.1 [iccjpeg](qtwebengine-3rdparty-iccjpeg.html) | Custom license [icu](qtwebengine-3rdparty-icu.html) | MIT [inspector protocol](qtwebengine-3rdparty-inspector-protocol.html) | BSD [jsoncpp](qtwebengine-3rdparty-jsoncpp.html) | MIT [libFuzzer](qtwebengine-3rdparty-libfuzzer.html) | University of Illinois/NCSA Open Source [libaddressinput](qtwebengine-3rdparty-libaddressinput.html) | Apache 2.0 [libevdev](qtwebengine-3rdparty-libevdev.html) | MIT [libevent](qtwebengine-3rdparty-libevent.html) | BSD [libjingle XMPP and xmllite libraries](qtwebengine-3rdparty-libjingle-xmpp- and-xmllite-libraries.html) | BSD [libjpeg](qtwebengine-3rdparty-libjpeg.html) | Custom license [libjpeg-turbo](qtwebengine-3rdparty-libjpeg-turbo.html) | Custom license [libpng](qtwebengine-3rdparty-libpng.html) | libpng license [libprotobuf-mutator](qtwebengine-3rdparty-libprotobuf-mutator.html) | Apache 2.0 [libsecret](qtwebengine-3rdparty-libsecret.html) | LGPL 2.1 [libsrtp](qtwebengine-3rdparty-libsrtp.html) | 3-clause BSD [libudev](qtwebengine-3rdparty-libudev.html) | LGPL 2.1 [libusbx](qtwebengine-3rdparty-libusbx.html) | LGPL 2.1 [libvpx](qtwebengine-3rdparty-libvpx.html) | BSD [libxml](qtwebengine-3rdparty-libxml.html) | MIT [libxslt](qtwebengine-3rdparty-libxslt.html) | MIT [libyuv](qtwebengine-3rdparty-libyuv.html) | BSD [linux-syscall-support](qtwebengine-3rdparty-linux-syscall-support.html) | BSD [mach_override](qtwebengine-3rdparty-mach-override.html) | MIT and 2-clause BSD [mesa](qtwebengine-3rdparty-mesa.html) | MIT and LGPL v2 [minigbm](qtwebengine-3rdparty-minigbm.html) | BSD [modp base64 decoder](qtwebengine-3rdparty-modp-base64-decoder.html) | BSD [nmoinvaz/minizip](qtwebengine-3rdparty-nmoinvaz-minizip.html) | Custom license [opus](qtwebengine-3rdparty-opus.html) | BSD [pyjson5](qtwebengine-3rdparty-pyjson5.html) | Apache 2.0 [re2 - an efficient, principled regular expression library](qtwebengine-3rdparty-re2-an-efficient-principled-regular-expression- library.html) | BSD 3-Clause [sfntly](qtwebengine-3rdparty-sfntly.html) | Apache 2.0 [simplejson](qtwebengine-3rdparty-simplejson.html) | MIT [sqlite](qtwebengine-3rdparty-sqlite.html) | Public domain [tcmalloc](qtwebengine-3rdparty-tcmalloc.html) | BSD [test_fonts](qtwebengine-3rdparty-test-fonts.html) | SIL OPEN FONT LICENSE, GPL v2, Bitstream Vera Fonts Copyright [tlslite](qtwebengine-3rdparty-tlslite.html) | Public domain and BSD [url_parse](qtwebengine-3rdparty-url-parse.html) | BSD and MPL 1.1/GPL 2.0/LGPL 2.1 [usrsctp](qtwebengine-3rdparty-usrsctp.html) | New BSD [v4l-utils](qtwebengine-3rdparty-v4l-utils.html) | LGPL 2.1 [valgrind](qtwebengine-3rdparty-valgrind.html) | BSD [woff2](qtwebengine-3rdparty-woff2.html) | Apache 2.0 [xdg-mime](qtwebengine-3rdparty-xdg-mime.html) | Academic Free License version 2.0 or LGPL v2 [xdg-user-dirs](qtwebengine-3rdparty-xdg-user-dirs.html) | MIT [xdg-utils](qtwebengine-3rdparty-xdg-utils.html) | MIT [yasm](qtwebengine-3rdparty-yasm.html) | 2-clause or 3-clause BSD licensed, with the exception of bitvect, which is triple-licensed under the Artistic license, GPL, and LGPL [zlib](qtwebengine-3rdparty-zlib.html) | Custom license © 2020 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the [GNU Free Documentation License version 1.3](https://www.gnu.org/licenses/fdl.html) as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. * [Download](https://qt.io/download/) * [Start for Free](https://qt.io/download/) * [Qt for Application Development](https://qt.io/download-eval-for-applications-step-2/) * [Qt for Device Creation](https://qt.io/request-eval-for-devices-step-2/) * [Qt Open Source](https://qt.io/download-open-source/) * [Terms & Conditions](https://qt.io/terms-conditions/) * [Licensing FAQ](https://qt.io/FAQ/) * [Product](https://qt.io/product/) * [Qt in Use](https://qt.io/product/) * [Qt for Application Development](https://qt.io/application-development/) * [Qt for Device Creation](https://qt.io/qt-for-device-creation/) * [Commercial Features](https://qt.io/qt-features/) * [Qt Creator IDE](https://qt.io/ide/) * [Qt Quick](https://qt.io/qt-quick/) * [Services](https://qt.io/services/) * [Technology Evaluation](https://qt.io/services-technology-evaluation/) * [Proof of Concept](https://qt.io/services-proof-of-concept/) * [Design & Implementation](https://qt.io/services-design-implementation/) * [Productization](https://qt.io/services-productization/) * [Qt Training](https://qt.io/qt-training/) * [Partner Network](https://qt.io/partners/) * [Developers](https://qt.io/developers/) * [Qt Extensions](https://marketplace.qt.io/) * [Examples & Tutorials](https://doc.qt.io/qt-5/qtexamplesandtutorials.html) * [Development Tools](https://doc.qt.io/qt-5/topics-app-development.html) * [Wiki](https://wiki.qt.io/) * [Forums](https://forum.qt.io/) * [Contribute to Qt](https://wiki.qt.io/contribute) * [About us](https://qt.io/about-us/) * [Training & Events](https://qt.io/events/) * [Resource Center](https://qt.io/resource-center/) * [News](https://qt.io/news/) * [Careers](https://qt.io/careers/) * [Locations](https://qt.io/locations/) * [Contact Us](https://qt.io/contact-us) [](https://qt.io/about-us/) * [Sign In](https://account.qt.io/login "Sign into your account.") * [Feedback](mailto:feedback@theqtcompany.com?Subject=Feedback%20about%20doc.qt.io%20site) * [Contact us](https://qt.io/contact-us/) * [© 2020 The Qt Company](https://qt.io/about-us/)