Dangerzone takes potentially dangerous PDFs, office documents, or images and convert them to a safe PDF.
Give it a document that you don’t know if you can trust (for example, an email attachment). Inside of a sandbox, Dangerzone converts the document to a PDF (if it isn’t already one), and then converts the PDF into raw pixel data: a huge list of RGB color values for each page. Then, outside of the sandbox, Dangerzone takes this pixel data and converts it back into a PDF.
This is free and open source software.
Features include:
- Sandboxes don’t have network access, so if a malicious document can compromise one, it can’t phone home.
- Sandboxes use gVisor, an application kernel written in Go, that implements a substantial portion of the Linux system call interface.
- Optionally OCR the safe PDFs it creates, so it will have a text layer again.
- Compresses the safe PDF to reduce file size.
- After converting, Dangerzone lets you open the safe PDF in the PDF viewer of your choice, which allows you to open PDFs and office docs in Dangerzone by default so you never accidentally open a dangerous document.
- Cross-platform support – runs under Linux, macOS, and Windows.
Website: github.com/freedomofpress/dangerzone
Support:
Developer: Freedom of the Press Foundation
License: GNU Affero General Public License v3.0
Dangerzone is written in Python. Learn Python with our recommended free books and free tutorials.
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