Open-Source Licenses
AnkhKit builds on outstanding open-source work. This page lists the AI models and key libraries used by our on-device tools. Model weights are downloaded once and cached in your browser from our own servers — but their upstream licenses still apply to the outputs you create.
AI models
Whisper base (OpenAI Whisper)
Used by: Audio transcription — audio-to-text, subtitle generator, speech-to-text, speaking speed test
MIT License Upstream project
Potrace (via esm-potrace-wasm)
Used by: Image vectorizer
GNU GPL v2 — see packages/tools-core/NOTICE.md for the corresponding source Upstream project
Key libraries
@huggingface/transformers (Transformers.js)
Apache License 2.0 Upstream project
kokoro-js
Apache License 2.0 Upstream project
ffmpeg.wasm
LGPL/GPL (upstream FFmpeg) Upstream project
pdf-lib (@cantoo fork) & pdf.js
MIT / Apache License 2.0 Upstream project
fflate, SheetJS, fast-xml-parser, MarkdownIt & other open-source libraries
MIT / Apache 2.0 (per project) Upstream project
Notes
Whisper, Kokoro, MODNET, and BiRefNet run entirely in your browser after
a one-time download — nothing you process is ever uploaded (see our
Privacy Policy).
The full it-tools attribution notice for ported logic lives in
packages/tools-core/NOTICE.md in the open-source repository.