PDF Content Comparer

Intuitive, intelligent comparison of your PDFs.

Your PDFs contain actual content, not just text or images. i-net PDFC intelligently compares the content in your files. Any differences are shown in a visually gorgeous display, akin to holding up two pieces of paper to the light.

Available now: i-net PDFC v4 Public Beta

NEW in version 4

  • i-net PDFC Server with a Web-GUI to compare documents online
  • Print or save comparison result as PDF
  • Export differences as a Report
  • Search inside PDF files
  • Display annotation
  • Show details of difference via context menu

See more features of version 4 here

Text. Images. Lines. Tables.

Compare the style and position of virtually every element a PDF file contains.

Many of your PDF files will contain many different content elements. i-net PDFC is special because it is aware of all of them. Page headers and footers and multi-column layout are detected and handled correctly.

Intuitive Usage

Intuitive Usage

See the differences at a single glance, jump right to the part of your document you are interested in. See the pages side-by-side or semi-transparently overlaying each other.

Easy Integration

With a Plus license, i-net PDFC can quickly be integrated into your own workflow. Use our extensive API or get things running via command-line. This makes i-net PDFC well-suited for being used within your favorite CI solution such as Hudson/Jenkins.

PDF Content Comparer

Comparing is as simple as dragging two PDFs into the compare window and clicking on the compare button. The result is a simple, intuitive overview of any differences detected in the two PDFs.

Instead of only comparing text in the PDFs, or converting the PDFs to images and comparing those pixel by pixel like other comparison tools, i-net PDFC can intelligently compare the actual content elements in your files such as…

  • Text differences
  • Line/Arc/Box differences
  • Image differences
  • Margin differences

These types of differences can each be configured in regards to their sensitivity, making for a powerful, elegant way to compare your documents the way you want to.

i-net PDFC is a pure Java application. This means it runs on any platform with a Java Runtime Environment 71) - nearly every modern platform such as Windows, OSX 10.8+, Solaris or Linux/Unix.

Let me say that i-net PDFC is awesome.

- AppFolio

We are trying i-net PDF Content Comparer, and I have to say it is so powerful.

- StateStreet

I have evaluated quite a number of different diff tools for comparing PDF documents. Your tool is outstanding for visualizing and synchronizing results - even with many insertions.


Key Features


i-net PDFC compares lines, shapes, images as well as text

PDFC does not simply do a text conversion or pixel-by-pixel comparison which both lead to loss of information. We make a deep structure comparison including styles, shapes and a lot more.

Powerful difference views

Intuitively view differences via the synchronized scrolling views side-by-side. Or check the differences as if you where holding two sheets of paper up to the light: semi-transparently one over the other.

Controlled sensitivity

Settings for the most needed options

There are not to many options - we only choose the ones that will really matter to you. You still have fine grained control on every aspect of the comparison. And if you need even more control: the API has you covered.

Export and Report

Export the differences as report or original document with annotations

PDFC lets you create summary reports about the differences in the documents. Additionally you can print or export your PDFS with highlighted differences into new PDFs. Differences will be added as annotations as well.

Exclude the unnecessary

Create text-exclusion expressions - either plain text or regular expression

There is automatic detection (and manual setting) to avoid too many differences in headers or footers. You can even exclude text or regular expression patterns from the comparisons. Concentrate on what is really different in the documents.

Intuitive interface

Display and jump to annotations

The UI will satisfy your every need. Click markers on the scrollbar to jump right in. Select search results or annotations and you'll be brought there. Double klick a marker and get all the changes in plain text. Use the arrow keys to navigate back and forth.

Plus License Features

The following features enable you to integrate i-net PDFC into your own environment using build scripts, the API, or your favorite CI tool such as Hudson/Jenkins.

  • command line tool to compare PDF files or directories
    • Batch comparison of all documents in entire directories
    • share configuration with GUI and vice versa
    • fine tune comparison settings
    • output the difference pages as image files
    • print or create a PDF file containing the comparison result
  • no page number and page count limitation 2)
  • JUnit capable
  • API and .NET API access to integrate PDFC in your products
    • allows a broader access to core functions of PDFC to e.g. create custom result filters and resemble the command line functionality
    • i-net PDFC provides a library to be embedded in your server software or program.
    • OEM conditions may apply

Get Support

If you have any questions, problems or suggestions, we provide excellent, lightning-fast support, included in your license. Contact us at pdfc@inetsoftware.de and we normally respond within 24 hours on weekdays, often even faster.


Every license is bound to a single computer and cannot be moved to another. There are four license types available for PDFC. In addition, there is a free Trial Version available that allows unlimited testing for 30 days, including the GUI and console part.

1 year
1 year
graphical interface
side-by-side comparison
page-over-page comparison
command-line access
generates comparison images
continuous integration
API access
includes 1 year of support and maintenance
license is limited to run for 1 year not limited 1 year not limited
Terms Allows the use of i-net PDFC for one year after activation for one user. Allows the unlimited use of i-net PDFC of the purchased major version for one user. Allows the use of i-net PDFC for one year after activation for one computer. Allows the unlimited use of i-net PDFC of the purchased major version for one computer.
Includes all updates for free within this period. Includes all updates of the purchased major version for free. Includes all updates for free within this period. Includes all updates of the purchased major version for free.
Allows the usage of the Desktop Tool to compare two PDF-files on demand
Allows using the command-line interface and developer API to compare multiple sets of PDF files in a batch, embed i-net PDFC in Java or .NET programs or run JUnit tests.
Has 5 additional Standard licenses included. Has 5 additional perpetual Standard licenses included.
OEM Version Embedding i-net PDFC into an own application for resale to your customers requires an OEM license. For terms and conditions, please get in touch with sales@inetsoftware.de.
$199 $495 $1950 $4950

Trial Version

Testing i-net PDFC is easy: download the free Trial Version. It is not limited in its functionality and runs for 30 days. You can test the GUI and console commands as well as integrate it into your test environment. We want you to be able to thoroughly check your scenario before you purchase. If you have any questions or suggestions about this, please contact us at pdfc@inetsoftware.de.

i-net PDFC v4 Public Beta

We're offering a public preview of our upcoming 4th version of i-net PDFC. It features a Server as well as the previous desktop variant of the PDF content comparer. Please note: License options for version 4 will be published with the final release of i-net PDFC 4.0. For any question concerning licenses please contact sales@inetsoftware.de.


The document selection in the Web-GUI resembles the one from the desktop. It also displays information about contingents and the selected comparison profile.


The Web-GUI is powered by the same differences engine as the desktop counterpart and features the same scrolling mechanism too.


The differences view can be accompanied by a list of all changes made to either document. A popup signals the summary of changes.


The i-net PDFC Server is a completely new way of working with PDF Content Comparer. It features:

  • The same powerful comparison backend as the Desktop Application
  • Multi-User access with multiple comparisons per user
  • Sharing of comparison profiles and results
  • Export of results as PDF
  • REST-ful interface for non-interactive and automated use or website integration
  • JUnit library to compare and verify documents using an i-net PDFC Server on the network, e.g. CI integrated tests
  • Statistics Module to monitor the server status and manage executed compare jobs
  • Plugin system to add more filters and new document types

Desktop Application

  • Standalone Application for Desktop Systems
  • Single-User and Single-Compare interface
  • Improved page and zoom tools
  • Support for right-to-left (RTL) writing of text
  • New: Management of multiple comparison profiles
  • New: Compare plain text files
  • New: Plugin system for filters and document types


  • Integrate i-net PDFC into CI system or custom application
  • Command line access to comparison features
  • Extensive API for Java and .NET
  • Server and GUI with manual starting script


Version 4 comes with multiple predefined comparison profiles and allows the customisation and creation of new profiles. Profiles can be shared for other users of the Web-GUI.


The export feature has been streamlined. It offers an archivable pdf version of the current comparison with multiple options.


Users can save and share comparisons with other logged-in users of the Web-GUI. The management overview displays all the saved comparisons and their current state.

1) i-net PDFC requires at least the Java 7 Runtime Environment, which you can download here.
2) The GUI does only allow one pair of PDF files to be compared at the same time and limits the amount of pages to be compared depending on the memory of your computer.

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