PDF4QT
Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.
Features
Properties
- Lightweight
- Privacy focused
Features
- Dark Mode
- Ad-free
- Hardware Accelerated
- Sign PDF files
- PDF annotation
- PDF compression
- Text to Speech
- Portable
- QT Based
- Support for Multiple threads
Tags
- pdf-sign
- compare-pdf
PDF4QT News & Activities
Recent activities
- swiss added PDF4QT as alternative to ZeroUploadPDF
OrdinaryPerson added PDF4QT as alternative to ComposePDF Pro- KimiBCN reviewed PDF4QT
It lacks many options and is not an alternative to Acrobat Pro. You can't OCR images, nor can you generate documents from a scanner.
- ClarifyDocuments added PDF4QT as alternative to ClarifyDocuments
Danilo_Venom added PDF4QT as alternative to Icecream PDF Editor- davidmbusto liked PDF4QT
What is PDF4QT?
PDF4QT is an open-source PDF viewer and editor based on the Qt framework. It includes a C++ library, PDF viewing and editing applications, and a command-line tool. It is compatible with Windows and Linux platforms. The software aims to provide a robust, open-source alternative to commercial PDF editors, with flexible licensing for both open-source enthusiasts and commercial users. It utilizes modern C++ features and multicore CPUs for efficient PDF editing and supports applications on Windows and Linux platforms. It also integrates the standard PDF 2.0 and supports high-resolution monitors.
PDF4QT offers features such as multithreading support, hardware-accelerated rendering, encryption, color management, optional content handling, and text layout analysis. It also includes signature validation, annotations and form filling, text to speech, advanced annotation tools, file attachments management, document compression, command-line tool, audio book conversion, internal structure inspector, document comparison, redaction, and document signing.






Comments and Reviews
I wouldn't call it a "PDF Editor". It has very limited capabilities to actually edit the contents of the PDF files.
It lacks many options and is not an alternative to Acrobat Pro. You can't OCR images, nor can you generate documents from a scanner.
useless, overloaded, fake, all smoke and no roast!
Perhaps it has some value; however, when I used the app to re-arrange a PDF's pages, there was no obvious way to actually save what I had done. I searched through all the menus but...no luck. Maybe a decent help file or documentation would change my mind.
Agree with "perhaps." Search function is not full text, limited to overview only, rendering it nearly useless for finding anything quickly. Loaded a 922 page PDF admirably quickly, so if the search function is improved, might be worth looking at again. One star for the app, one star for potential.