If you manage classified, sensitive, or private information day in and day out, you know firsthand that you need a secure and thorough redaction process that easily, consistently, and securely removes sensitive text and graphics. Failures to redact can have costly and dangerous consequences not only for organizations but also for the people whose privacy or security they are protecting.

Thousands of Federal, State, and Local government agencies, as well as law firms, corporations,  and health organizations; rely on Appligent’s Redax plug-in for Adobe® Acrobat® (Standard or Professional) every day to give the ultimate protection for sensitive information.

Appligent was the first to natively redact PDF documents and holds U.S. Patent No. 7,428,701 on the “method, system and computer program for redaction of material from documents.”

Information removed from PDF files using Redax cannot be recovered. Redax goes beyond Adobe® Acrobat® Professional’s basic redaction capabilities to meet your editors’ and reviewers’ specific workflow needs.

Redax is available for Windows only. Redax 5.8 is compatible under Acrobat XI, 2015, 2017 & 2020. Redax 5.8.9 is compatible under all versions of Adobe Acrobat DC (including 2023) 32 bit and 64 bit.

Please see our Voluntary Product Accessibility Template (VPAT) and Adobe’s Voluntary Product Accessibility Template for more information.

In addition; you can perform redactions on PDF files using Appligent’s Redax and do so without using the computer’s mouse. Using Redax without a Mouse

Redax is a registered trademark of Appligent Inc.

If you need centralized automated, document redaction processes on a server—for example to apply redaction criteria to a large number of documents—learn more about Appligent’s Redax Enterprise Server.

Representation of Redax functionality


Redaction Markup

  • Advanced patterns allow you to automatically find and mark social security numbers (SSN), ZIP codes, international postal codes, US and international phone numbers, credit card numbers, dates, URLs, email addresses and more
  • Support for Regular Expressions allowing you to define your own custom pattern searches
  • Markup Engine performs ‘Find Using List’ markup up to 30 times faster than older versions of Redax.
  • Automatically finds and marks lists of words and phrases for redaction
  • Finds words and phrases that break across lines
  • Supports Acrobat’s standard text mark-up (highlight, underline and cross out / strikethrough)
  • Available Full Page or multi-page redaction options

Redaction Processing

  • Enhanced Redaction Engine
  • Automatically preserves the original document
  • Safely removes text, graphics and images based on markup
  • Redaction from single or multi-page templates
  • Appearance of redacted areas is fully customizable
  • Optional page consolidation in cases where multiple pages are fully redacted
  • Automatic removal of document metadata
  • Optionally removes all annotations and bookmarks
  • Optionally condense fully redacted pages.
  • Redact documents based on assigned categories
  • Redact tagged documents.

Exemption Codes

  • Exemption code palettes are fully customizable
  • Includes built-in exemption codes for the US Freedom of Information Act (FOIA) and Privacy Act
  • Optionally place exemption codes at the bottom of the page
  • Optionally, use selective “redaction by category” capabilities

Redaction Workflow Automation

  • May be integrated with existing document management systems
  • Generates redaction reports to facilitate record keeping
  • Supports semi-automated and multi-user FOIA and redaction workflows, including in conjunction with Redax Enterprise Server

Enhanced User Interface

  • Expanded toolbar and improved user experience

Redax Toolbar Illustration



Representation of Redax functionality

Tech Specs

Supporting Operating Systems

Windows 7 and higher

Redax 5.8.9 is compatible under Adobe Acrobat DC, Standard or Professional.
Redax 5.8 is compatible under Adobe Acrobat XI, 2015, 2017, and 2020, Standard or Professional.
Redax 5.6 is compatible under Adobe Acrobat 9, X or XI, Standard or Professional.
Redax will not install into the free Adobe Reader.  It is not intended to work inside of the Adobe Reader.


See the Redax Users Guide for complete documentation.

Representation of Redax functionality

Try & Buy

How to Buy

Redax single-desktop pricing starts at $249.00 (USD), and is available for Windows.

A Redax Five (5) Pack is available for $999.00 (USD). This price includes one year of support and maintenance for each license and represents a savings of 33% as compared to the single-desktop price. Contact us for more information on other volume discounts.

Redax can also be purchased as part of a package that includes one license of Redax and one license of StampPDF for $319.00 (USD). This price includes one year of support and maintenance for each license and represents a savings of 30% as compared to the single desktop price.

Redax available on Navy SMIT (Service Management, Integration and Transport)

Redax is available on Navy SMIT (Service Management, Integration and Transport). If you are on the SMIT network, please contact your SMIT network representative.  If you are unsure of who to contact, please call us and we will put you in touch with HP representatives that can help you.

Section 508 Compliance

Appligent is committed to making its client software accessible to persons with disabilities. Our plug-in software uses Adobe Acrobat as a rendering engine and relies on its feature set for presenting content.

Please see our Voluntary Product Accessibility Template (VPAT) and Adobe’s Voluntary Product Accessibility Template for more information.

Download Redax from the Appligent Web Store

Free Trial… Buy Redax… Buy Redax 5 Pk Bundle… FOI Bundle Acrobat 32… FOI Bundle Acrobat 64…
Representation of Redax functionality

Quick Reference

Redax Quick References

Following are single page quick reference documents on working with Redax.

  1. Overview of Redax
  2. How to Draw a Redax Box

The complete documentation for Redax can be found on the documentation site for Redax and StampPDF at redax.appligent.com

Representation of Redax functionality


Here are a collection of tutorial videos answering some common Redax questions.

How to Create Redax Boxes

This video will show you how to create Redax boxes and then how to redact using Redax.

How to Setup Redax Preferences

This video will demonstrate how to setup your redaction preferences. These settings will determine how the redacted area will appear.

How to Use Find Using List

This video will demonstrate how to setup a Find Using List file so that Redax can search through your text document and markup words and/or phrases for redaction.

How to add a New Palette

This video will demonstrate how to add new Palettes to Redax as well as show you how to delete the existing built-in US FOIA and US Privacy codes.

How to Change Exemption Codes in All Existing Redax Boxes

This video will demonstrate how to change and replace Exemption Codes in all existing Redax boxes with a new code.

Representation of Redax functionality

No Mouse Needed

How to use Redax without a Mouse

Hands off that mouse. Perform redactions on PDF files using Appligent’s Redax and do so without using the computer’s mouse.

With Appligent’s Redax it’s possible to perform a redaction on a PDF file without using the computer’s mouse.
This is accomplished by using standard Windows keyboard shortcuts such as ALT plus TAB to move between applications.
It also involves using what are called keyboard accelerators such as ALT plus F which is commonly used to expand the file menu in many applications. And it uses a Windows accessibility feature called “Mouse Keys”.

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Protect and Secure Sensitive Information in PDF Files