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Home/Categories/Business & Productivity/PDF4QT
icon of PDF4QT

PDF4QT

Open source alternative to Adobe Acrobat Pro, Foxit PDF Editor and Nitro Pro

An open-source PDF editor for Windows/Linux, offering a C++ library, command-line tool, and applications for viewing/editing PDFs.

1.4K stars
image of PDF4QT
Contents
  1. 01Who PDF4QT is for

Repository

Stars
1.4K
Forks
134
License
MIT
Latest
v1.5.3.1
Last commit
9 days ago
Last verified
May 29, 2026
Repo
JakubMelka/PDF4QT ↗

Additional details

C++
MIT
Active this month
Visit websiteGitHub repo
  • 02The problem it solves
  • 03How it solves it
  • 04Strengths and trade-offs
  • 05Tech stack
  • 06FAQ
  • 07Similar open-source tools
    • TL;DR

    PDF4QT is an open source PDF toolkit with a rendering library, advanced document viewer, command-line tool, and page manipulation applications for Windows and Linux. It replaces paid PDF editors for users and developers who need local PDF viewing, editing, and automation. MIT licensed.MIT · C++ · 1.4K stars · Active this month

    who it's for

    Who PDF4QT is for#

    Developers embedding PDF functionality

    Use PDF4QT when an application needs local PDF rendering or document functions through a C++ library.

    Skip if:

    You need a vendor-supported PDF SDK with commercial support and legal guarantees.

    Users managing PDFs locally

    Use PDF4QT for desktop PDF viewing, page organization, and command-line document operations on Windows or Linux.

    Skip if:

    Your workflow depends on cloud collaboration or advanced OCR.

    the problem

    The problem it solves#

    how PDF4QT solves it

    How it solves it#

    PDF rendering library

    Includes a PDF rendering library that developers can use when applications need local PDF functionality.

    Viewer and page tools

    Provides desktop applications for advanced viewing and document page manipulation, covering both reading and document organization workflows.

    Command-line PDF tool

    Includes a CLI path for scripted PDF operations, which helps teams automate repetitive document tasks.

    strengths · trade-offs

    Strengths and trade-offs#

    Strengths

    • Covers users and developersPDF4QT is not only a viewer. It includes applications, a library, and a command-line tool, which makes it useful across desktop and automation workflows.
    • Local Windows and Linux workflowPDF4QT runs on Windows and Linux, giving teams a local PDF path without uploading files to a cloud editor.

    Trade-offs

    • -Smaller ecosystem than commercial PDF suitesPDF4QT can cover many local PDF tasks, but commercial suites may offer stronger OCR, enterprise deployment, support, and document-cloud collaboration.
    tech stack · detected from GitHub

    What it's built on#

    Languages
    C++
    frequently asked

    FAQ#

    What is PDF4QT?

    PDF4QT is an open source PDF toolkit with a rendering library, viewer applications, a command-line tool, and page manipulation tools.

    What operating systems does PDF4QT support?

    The official README states that PDF4QT works on Microsoft Windows and Linux.

    Is PDF4QT only a PDF viewer?
    also worth a look

    Similar open-source tools#

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    Language
    C++
    Open issues
    44
    Contributors
    11
    First release
    2019

    Categories

    Business & ProductivityDeveloper ToolsDesign & Creative

    Tags

    Developer ToolsDocumentationOpen CoreCLICodingAPI Development Tools

    PDF work often splits between visual review, page operations, and developer automation. Teams either buy a commercial editor for every user or stitch together separate viewers, command-line tools, and libraries.

    The pain is worse when PDF files cannot leave a local machine or internal environment. Cloud PDF tools may be convenient, but they add privacy and upload concerns for sensitive documents.

    No. PDF4QT includes viewer applications, a document page manipulator, a command-line tool, and a PDF rendering library.