Open source
Last updated September 28, 2026
PDF Canary is built on excellent open-source software. Thank you to everyone who maintains it.
In your browser
- pdf-lib (MIT): merge, split, rotate and build PDFs
- pdf.js (Apache-2.0): render pages and read text
- SheetJS Community Edition (Apache-2.0): CSV and Excel
- fflate (MIT): ZIP files
On our conversion server
- LibreOffice (MPL-2.0), qpdf (Apache-2.0), Ghostscript (AGPL-3.0), OCRmyPDF (MPL-2.0), Tesseract (Apache-2.0), Poppler (GPL), img2pdf (LGPL-3.0)
- pdf2docx (MIT) with PyMuPDF (AGPL-3.0), pdfplumber (MIT), openpyxl (MIT), python-pptx (MIT)
Source code of our conversion server
Our conversion server uses AGPL-licensed software, so its complete source code is published under the AGPL-3.0: github.com/NateDev0/converter-network-server.