Tintenfisch icon
Tintenfisch icon

Tintenfisch

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PDF editor that runs entirely in the browser. Edit existing text in place, annotate, fill and create forms, organize pages, redact, sign and password-protect PDFs. Files are never uploaded; free and open source (MIT).

Cost / License

  • Free
  • Open Source (MIT)

Application type

Since

  • New

Updated

  • Updated Oct 2026

Platforms

  • Online
  • Mac
  • Windows
  • Self-Hosted
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Create and edit PDFs. Collaborate with ease. E-sign documents and collect signatures. Get everything done in one app, wherever you work. Acrobat’s got it. Stay on top of your documents with powerful features for desktop, mobile, ...

 
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Office & Productivity

GitHub repository

  •  9 Stars
  •  1 Forks
  •  0 Open Issues
  •   Updated  
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What is Tintenfisch?

The engine is written from scratch in Rust and compiled to WebAssembly and edits PDF content streams directly, so changed text stays real text and paragraphs reflow. No account, no upload. Also offers certificate-based signatures with verification, true redaction and AES-256 protection. Desktop apps for macOS and Windows and a self-hostable Docker image are available.