The open-source software behind the site.
toolsforfree.dev is built on open-source software. Here is what we use, under which license, and where to find it.
In the tools
The code and models each tool runs on your device.
- @mediabunny/mp3-encoder (MP3 encoder for Mediabunny)License MPL-2.0
Used by: Audio Silence Remover
- fflate (zip file creation)License MIT
Used by: Image Compressor, Background Remover
- imagetracerjs (backup engine, JavaScript)License Unlicense
Used by: Image to SVG
- jSquash (WebAssembly builds of the codecs)License Apache-2.0
Used by: Image Compressor
- LAME (the MP3 encoding engine inside @mediabunny/mp3-encoder)License LGPL-2.0-or-later
Used by: Audio Silence Remover
- libaom (AV1 codec used by libavif)License BSD-2-Clause
Used by: Image Compressor
- libavif (AVIF encoder)License BSD-2-Clause
Used by: Image Compressor
- libdeflate (compression used by OxiPNG)License MIT
Used by: Image Compressor
- libwebp (WebP encoder)License BSD-3-Clause
Used by: Image Compressor
- Mediabunny (reading, writing and converting video files)License MPL-2.0
Used by: Video Compressor
- Mediabunny (reads, decodes and writes the audio files)License MPL-2.0
Used by: Audio Silence Remover
- MODNet ("Portrait" model)License Apache-2.0
Used by: Background Remover
- MozJPEG (JPG encoder)License IJG, BSD-3-Clause and zlib
Used by: Image Compressor
- ONNX Runtime Web (inference engine)License MIT
Used by: Background Remover
- OxiPNG (lossless PNG optimisation)License MIT
Used by: Image Compressor
Used by: Background Remover
- resize (Lanczos resizing)License MIT
Used by: Image Compressor
- Squoosh (original code of the WebAssembly codecs)License Apache-2.0
Used by: Image Compressor
- U²-Net ("General" and "Light" models)License Apache-2.0
Used by: Background Remover
- vectortracer (WebAssembly build of VTracer)License MIT
Used by: Image to SVG
- visioncortex (Rust library at the core of VTracer)License MIT or Apache-2.0
Used by: Image to SVG
Used by: Image to SVG
- wasm-bindgen (link between WebAssembly and JavaScript)License MIT or Apache-2.0
Used by: Image to SVG
- Xenova/modnet (ONNX file of MODNet)License Apache-2.0
Used by: Background Remover
Site libraries
The libraries installed with the site, as declared by their authors.
- @jsquash/avifLicense Apache-2.0
- @jsquash/jpegLicense Apache-2.0
- @jsquash/oxipngLicense Apache-2.0
- @jsquash/pngLicense Apache-2.0
- @jsquash/resizeLicense Apache-2.0
- @jsquash/webpLicense Apache-2.0
- @mediabunny/mp3-encoderLicense MPL-2.0
- @vinext/cloudflareLicense MIT
- clsxLicense MIT
- fflateLicense MIT
- imagetracerjsLicense Unlicense
- jspdfLicense MIT
- lucide-reactLicense ISC
- mediabunnyLicense MPL-2.0
- modern-screenshotLicense MIT
- onnxruntime-webLicense MIT
- qrcodeLicense MIT
- reactLicense MIT
- react-domLicense MIT
- react-server-dom-webpackLicense MIT
- vectortracerLicense MIT
- vinextLicense MIT
Fonts
Fonts are hosted on our own domain, with no call to an outside service.
- GeistLicense OFL-1.1
- Geist MonoLicense OFL-1.1
- Inter TightLicense OFL-1.1
- Noto Sans ArabicLicense OFL-1.1
- OutfitLicense OFL-1.1
Each piece of software belongs to its authors. The full text of every license is in the project's repository, behind its link. The site only uses licenses that allow commercial use: permissive or weak copyleft.
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