Software · 3D, CAD & electronics

KanzonasPDF

A FOREVER free, opensource alternative for Bluebeam Revu, PDF-XChange Editor and Adobe Acrobat Pro on Windows and Linux. Markups, stamps, measuring, signatures, forms, OCR, redaction, page tools and editing of a PDF’s…

Completely free
Open source
No account

Overview

Features described in its GitHub repository: text recognition (OCR).

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Markups, stamps, measuring, signatures, forms, OCR, redaction, page tools and editing of a PDF’s…” — GitHub, 10 November 2026

At a glance

KanzonasPDF is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (AGPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No account needed
Commercial use allowed

Sources and checks

Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) — 9 November 2026
Last technical check: 6 November 2026
Description from github.com — Dépôt GitHub keithlyding/KanzonasPDF (AGPL-3.0-only)

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