PDF4QT is unclaimed —
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PDF4QT
Your go-to open source PDF editor powered by the Qt framework.·jakubmelka.github.io
PDF4QT is an open source PDF editor and viewer for Windows and Linux, built on the Qt framework and modern C++. It provides a suite of desktop applications for viewing, editing, organizing, comparing, and signing PDF documents, along with a C++ library and a command-line tool for developers. The project is hosted on GitHub and released under the LGPLv3 license.
What it's for
Viewing and reading PDF documentsEditing and annotating PDF documentsFilling PDF formsVerifying digital signaturesDigitally signing documentsRedacting sensitive information from PDFsMerging and splitting PDF documentsComparing two PDF documents for differencesConverting PDFs to text or audio booksInspecting the internal structure of PDF filesOptimizing/compressing PDF file sizeManaging file attachments within PDFsAutomating PDF operations via command line
Features 20
- Advanced annotation tools (images, text, etc.)
- Annotations and form filling
- Audio book conversion
- Color management
- Command line tool
- Digital signature validation
- Document comparison (DocDiff)
- Document optimization/compression
- Document signing
- Encryption support
- File attachments management
- Hardware accelerated rendering
- Internal structure inspector
- Multithreading support for multicore CPUs
- Optional content handling (show/hide layers)
- Page organizing (merge, split, move, clone, add pages)
- Plugin support
- Redaction
- Text layout analysis and PDF-to-text conversion
- Text to speech capability
At a glance
free tieropen source
TypeDesktop app
DeploymentInstalled (local)
PlatformsWindows, Linux
Fordevelopers, regular users
CompanyJakub Melka
Pricing
PDF4QT is entirely free and open source; no paid plans are mentioned. A 'Donate' link exists but no structured pricing.