Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

OpenPDF: Overview, Related Topics & Entities

OpenPDF is a free Java library for creating and editing PDF files with the Mozilla Public License and the GNU Library General Public License free software license. It is a fork of iText, created because the license of iText was changed from LGPL / MPL to a dual AGPL and proprietary license in order for the original authors to sell a proprietary version…

Language: English [EN]
Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.
100%
More settings
100% 100% 100% 100% 100%

OpenPDF topic overview

The analysis highlights Overview, Related Topics and Entities as prominent areas in the source structure around OpenPDF.

Related topics
5
Source areas
1
Connected nodes
6
Extracted relationships
10
Concept neighborhoods
7
Bridge connections
6

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 5 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Developer
https://github.com/LibrePDF/OpenPDF/graphs/contributors
License
LGPL V2.1 & MPL V2 Open-source software
Operating system
Cross-platform
Release
2017
Repository
github.com/LibrePDF/OpenPDF
Stable release
3.0.5 / 22 May 2026; 3 months ago (22 May 2026)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How OpenPDF connects Entity context

The extracted context around OpenPDF shows recurring relationship patterns in the source. For example, OpenPDF → https://github.com/LibrePDF/OpenPDF/graphs/contributors Another extracted example is OpenPDF → LGPL V2.1 & MPL V2 Open-source software. Use these groups to spot repeated connection types before inspecting the individual relationships.

OpenPDF

Top relations

Developer · 1
OpenPDF → https://github.com/LibrePDF/OpenPDF/graphs/contributors
License · 1
OpenPDF → LGPL V2.1 & MPL V2 Open-source software
Operating system · 1
OpenPDF → Cross-platform
Release · 1
OpenPDF → 2017
Repository · 1
OpenPDF → github.com/LibrePDF/OpenPDF
Stable release · 1
OpenPDF → 3.0.5 / 22 May 2026; 3 months ago (22 May 2026)
Type · 1
OpenPDF → Library
Website · 1
OpenPDF → librepdf.github.io/OpenPDF/
Written in · 1
OpenPDF → Java
is a · 1
OpenPDF → free Java library for creating and editing PDF files with the Mozilla Public License and the GNU Library General Public License free software license

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

software version java license pdf changed also library lgpl mpl free open-source website fork itext creating editing files mozilla public

OpenPDF relationships Subject–Predicate–Object triples

TTTA extracted 10 structured relationships around OpenPDF. Examples in this analysis include OpenPDF → Developer → https://github.com/LibrePDF/OpenPDF/graphs/contributors and OpenPDF → License → LGPL V2.1 & MPL V2 Open-source software. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
OpenPDFDeveloperhttps://github.com/LibrePDF/OpenPDF/graphs/contributors1.00infobox
OpenPDFLicenseLGPL V2.1 & MPL V2 Open-source software1.00infobox
OpenPDFOperating systemCross-platform1.00infobox
OpenPDFRelease20171.00infobox
OpenPDFRepositorygithub.com/LibrePDF/OpenPDF1.00infobox
OpenPDFStable release3.0.5 / 22 May 2026; 3 months ago (22 May 2026)1.00infobox
OpenPDFTypeLibrary1.00infobox
OpenPDFWebsitelibrepdf.github.io/OpenPDF/1.00infobox
OpenPDFWritten inJava1.00infobox
OpenPDFis afree Java library for creating and editing PDF files with the Mozilla Public License and the GNU Library General Public License free software license0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around OpenPDF bring nearby vocabulary together. In this analysis, examples include Pdf, Also and License. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • mozilla public license
    • General
    • Gnu
    • Public
    • Software
    • Lgpl
    • Mpl
    • Openpdf
    • Pdf
    • Agpl
    • Authors
    • Created
    • Dual
  • gnu library general public license
    • General
    • Gnu
    • Mozilla
    • Public
    • Software
    • Lgpl
    • License
    • Mpl
    • Openpdf
    • Pdf
    • Creating
    • Editing
  • OpenPDF
    • Pdf
    • Also
    • License
    • Software
    • Files
    • General
    • Gnu
    • Includes
    • Mozilla
    • Name
    • New
    • Open-source
  • openpdf
    • Pdf
    • Also
    • License
    • Software
    • Files
    • General
    • Gnu
    • Includes
    • Mozilla
    • Name
    • New
    • Open-source
  • free software
    • Library
    • Java
    • License
    • Openpdf
    • Pdf
    • Software
    • Creating
    • Editing
    • Files
    • General
    • Gnu
    • Mozilla
  • fork
    • Agpl
    • Authors
    • Created
    • Dual
    • Itext
    • Order
    • Original
    • Proprietary
    • Sell
    • Changed
    • Lgpl
    • Mpl
  • itext
    • Order
    • Original
    • Proprietary
    • Sell
    • Lgpl
    • Mpl
    • License
    • Software
    • Version

Connections between topic areas Semantic bridges

Bridges highlight paths between different parts of the OpenPDF map and can reveal research angles that are easy to miss in a flat list.

Min side: 3

Map overview Semantic statistics

OpenPDF

Nodes7
Edges6
Triples10
Avg. degree1.71
Density0.285714
Components1

Source & methodology

TTTA analyzes the structure around OpenPDF to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Overview, Related Topics & Entities, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — OpenPDF · EN edition · Analysis: TopicsToTalkAbout

For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.