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The Latest

SecurSign 5 Now Available! Includes Signature Validation to Detect Tampering.
Lansdowne, PA (July 13, 2011)
Encrypt, digitally sign and verify digital signatures on PDF documents.

Redax 5: Advanced Redaction for PDF Documents
Tuesday, March 22, 2011
The latest Redax adds new patterns, regular expressions and more!

Redax Enterprise Server 3 Ships!
Thursday, January 6, 2011
New Redaction Engine, Powerful New Markup Options and More!

Feature Articles

Talking PDF collects Duff Johnson's articles, blog-posts and presentations about PDF technology and PDF Standards into one extremely PDF-centric place.

Many of these articles were originally published on Planet PDF or Adobe's AcrobatUsers.com

The following list includes most of Duff's features-length pieces in approximate chronological order.  There's more in the Talking PDF Archive.


Thinking Beyond the PDF

You Reap What You Sow: The Australian Government's Report on PDF Accessibility

REVIEW: 5 Free PDF Readers Compared

Each PDF Page is a Painting

Reader Extensions: Read the Fine Print First

White Paper: How to Implement PDF/A

PDF Forms: More than Fields Alone

What you don't know about PDF can hurt you

Why PDF?

Is PDF an Open Standard?

No, PDF is NOT owned by Adobe!

Word doesn't do Section 508, PDF gets the blame

REVIEW: Four Free PDF Readers

The Command-Line: Reliability Never Goes Out of Style

The Tablet: What it Means for Publishing

Understanding Acrobat's Optimizer (updated for AcrobatUsers.com)

Make Your PDFs Work Well with Google (updated for AcrobatUsers.com)

The PDF Prescription for Health Care Cost Control

How Reader Extensions Should be Sold

PDF is Green Tech for Your Office

The Content that Endures: What to Know About PDF/A

PDF goes to ISO: The road ahead

REVIEW: PDF Bookmarks: Surveying the Options (for AcrobatUsers.com)

PDF Goes to ISO: Some Background

PDF in Government (for AcrobatUsers.com)

PDF Usability: Debate and Reality (for AcrobatUsers.com)

Acrobat Bookmarks: Why and How (for AcrobatUsers.com)

Maximizing PDF Usability (for AcrobatUsers.com)

Digital Signatures with PDF and Acrobat (for AcrobatUsers.com)

REVIEW: A Survey of Redaction Tools (for AcrobatUsers.com)

What Are “PDF Tags” and Why Should I Care? (for AcrobatUsers.com)

Legacy Content Conversion: Generating Citations, Revenue and Goodwill from Your Publication History (for Journal Publishing)

REVIEW: ARTS PDF's Aerialist Pro

REVIEW: First Impressions of Acrobat 7.0

Accessible PDF: A Strategic Review

Strategies for PDF Accessibility: Tagged PDF vs Accessibility for the Masses

PDF Files Can Comply with Section 508. Now It's Your Move.

What Is PDF?

PDF Online 101 - A Crash Course

New Life For Old Content (Electronic Publishing) PDF, 835KB