KviselPix
Home
AVIF Pro Web
Watch DemoFeaturesDownloadFAQBuy
Learn Contact
Open source

Third-party licenses

Notices, applicable license families, and source information for components distributed with or used by AVIF Pro Web

Contents
Source-code offer Encoding tools Codecs Frameworks Important notice
Corresponding source

Source-code offer

For any GPL or LGPL component distributed in binary form with AVIF Pro Web, Volodymyr Kubrin, trading as KviselPix, offers the complete corresponding source code, applicable notices, modifications, and build scripts used for that binary.

This offer is valid for at least three years from your receipt of the Software Product, is available to any third party, and will be fulfilled for no more than the reasonable cost of physical source distribution. Use the contact form to request the source.

Encoding tools

ComponentUseLicenseProject and source
FFmpegStandalone media encoderLGPL v2.1 or later for the distributed build, subject to its enabled configurationFFmpeg project
License information
GifsicleGIF compression and optimizationGNU GPL v2Project source

FFmpeg and Gifsicle run as separate executable tools. AVIF Pro Web's proprietary code does not dynamically link to them. The license applicable to each distributed executable is determined by its exact build and enabled components.

Codec components

GroupComponentsApplicable license families
Videolibaom, libvpx, SVT-AV1, dav1d, openh264Alliance for Open Media patent license, BSD 2-Clause, BSD 3-Clause, and component-specific patent terms
AudioOpus, Vorbis, Ogg, LAMEBSD-style licenses and LGPL for applicable LAME components
ImagelibwebpBSD 3-Clause-style license and applicable patent terms
libaom libvpx SVT-AV1 dav1d openh264 Opus Vorbis and Ogg libwebp

Application frameworks

ComponentUseLicenseProject
ElectronDesktop application frameworkMIT LicenseElectron source
Node.jsApplication runtimeMIT License and bundled dependency noticesNode.js source

Important notice

Each third-party component remains the property of its respective copyright holder and is provided under its own license. Those licenses govern your rights to the third-party components and are not replaced or restricted by the AVIF Pro Web EULA.

The exact versions, copyright notices, license texts, configuration flags, patches, and corresponding sources included with a specific AVIF Pro Web release control over this general website summary. Use the contact form if you need the materials for a particular release.

KviselPix

© 2026 Volodymyr Kubrin, trading as KviselPix. All rights reserved.

EULAThird-party licensesContact