Licenses & credits

KeepItLocally is possible because of outstanding open-source software. Everything below runs inside your browser — none of it sends your data anywhere.

Ghostscript (AGPL-3.0)

PDF compression, password add/remove, grayscale conversion, and repair are powered by Ghostscript, © Artifex Software, Inc., used under the GNU Affero General Public License v3. We ship an unmodified WebAssembly build. Corresponding source code:

• Ghostscript source: github.com/ArtifexSoftware/ghostpdl
• The exact WASM build we bundle (with npm provenance): github.com/okathira/ghostpdl-wasm

Everything else

• pdf-lib (MIT) — PDF creation and manipulation (merge, split, sign, watermark…)
• Mozilla pdf.js (Apache-2.0) — PDF rendering and text extraction
• jSquash (Squoosh codecs) (Apache-2.0 / MIT) — AVIF, WebP, JPEG, PNG image encoding in WebAssembly
• Tesseract / tesseract.js (Apache-2.0) — On-device OCR
• React & React Router (MIT) — Application framework
• Tailwind CSS (MIT) — Styling
• yaml, smol-toml, sql-formatter, js-beautify, Terser, Papa Parse, marked, DOMPurify, diff, cronstrue, cron-parser, fflate, qrcode, jsQR, spark-md5, heic-decode, Comlink (MIT / Apache-2.0 / BSD) — Developer, text, and utility tools