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Third-party notices

Kiln is built on open-source software. Local tools run these libraries as WebAssembly/JavaScript inside your browser. This file is the license audit required by the build (see scripts/license-audit.mjs, which fails CI if any dependency is AGPL/GPL).

Copyleft (recorded, permitted for a web service)

Package License Notes
@ffmpeg/core (ffmpeg.wasm core) GPL-2.0-or-later (NOT LGPL: the published core is built with libx264, which makes the whole binary GPL) FFmpeg compiled to WASM. Loaded at runtime as a separate, unmodified program from /wasm/ inside a Web Worker and driven through its command-line interface; Kiln's own code is not linked into it. Complete corresponding source: https://github.com/ffmpegwasm/ffmpeg.wasm (tag v0.12.10) and https://ffmpeg.org. If a GPL component is unacceptable, replace it with a self-built LGPL core (configure FFmpeg without --enable-gpl/libx264; H.264 encoding then becomes unavailable and Compress Video must output VP9/WebM).
heic-to (bundles libheif + libde265) LGPL-3.0 HEIC decoding. Runtime-loaded WASM module. Source: https://github.com/hoppergee/heic-to

Not used, by policy

MuPDF / mupdf.js, PyMuPDF and Ghostscript are AGPL-3.0 (Artifex dual license). They are excluded; PDF compression and encryption use QPDF instead.

Permissive

Package License Used for
astro, @astrojs/* MIT Framework
preact, @nanostores/preact, nanostores MIT Islands + state
tailwindcss MIT Styling
vite-plugin-pwa, @vite-pwa/astro, workbox-* MIT Service worker
pdf-lib MIT PDF merge/split/rotate/watermark/page numbers/JPG→PDF
pdfjs-dist (pdf.js) Apache-2.0 PDF rendering, text extraction, previews
@neslinesli93/qpdf-wasm ISC (wrapper) / QPDF: Apache-2.0 PDF compress, encrypt, decrypt
@jsquash/jpeg (MozJPEG) Apache-2.0 / BSD-3 (MozJPEG) JPEG codec
@jsquash/png, @jsquash/oxipng Apache-2.0 / MIT (Oxipng) PNG codec + optimiser
@jsquash/webp (libwebp) Apache-2.0 / BSD-3 (libwebp) WebP codec
@jsquash/avif (libavif, dav1d, aom) Apache-2.0 / BSD-2 AVIF codec
@jsquash/resize Apache-2.0 / MIT Lanczos resize
@ffmpeg/ffmpeg, @ffmpeg/util MIT ffmpeg.wasm JS wrapper
tesseract.js Apache-2.0 OCR (Pro, lazy)
client-zip MIT ZIP downloads
qrcode MIT QR code generation
prettier MIT Code beautifier
marked MIT Markdown rendering
dompurify Apache-2.0 / MPL-2.0 HTML sanitising
docx MIT DOCX generation
geist (Geist Sans / Mono) SIL OFL 1.1 Typography
@supabase/supabase-js MIT Auth + database client
stripe MIT Billing
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