Compare two PDF documents - fast, incredibly easy and reliably.
Just drop two PDF icons into the PDiff window… and instantly
see the comparison results. Comparing texts has never been this
easy.
What exactly has changed, what is really the same? How often do
you get back a document and are still uncertain about the
changes? Why is it such a hard task to juggle with revisions
edited by many authors? If you just want to see what happened,
then PDiff Express is made for you.
PDiff Express allows you to compare the content of two PDFs in order
to pinpoint all textual changes. Just drag and drop two versions into
PDiff and you will see all differences at a glance. This still works
if fonts, layout, hyphenation or even page breaks were altered.
PDiff Express is an ideal solution to compare versions of your
important office documents
mission critical technical manuals
legal texts and business contracts
financial reports
manuscripts and thesis texts
scientific articles, reports, and proceedings
fictional books and non-fiction books
copywriting to press-ready layout
Key Features
fast and reliable PDF text comparison for multipage documents
highlighting of differences (changes, insertions, and
deletions) in the PDF files
text synopsis display with synchronized text and highlighted differences
synchronized side-by-side display of two PDFs: see
corresponding words in all displays by hovering with the mouse
over the text
comparison handles layout changes (e.g. single vs. multi
column), font, size and style changes, added hyphenation and
different page breaks
spot light display to distinguish text from non-text areas
reformatting of text according to layout of the other document
full text search function
easy-to-use interface for best user experience
full Unicode support for international scripts
Interface Languages
English, German
Available on Microsoft Store
PDiff Express for Windows is available on the Microsoft Store.
Available on Mac App Store
PDiff Express for Mac is available on the Mac App Store.
Need more features?
Do you need more features such as other input formats (RTF,
DOC/DOCX, HTML), automation or printed proof reports? Then have
a look at our PDiff Desktop, PDiff QA, and PDiff
Professional at https://www.csci.de/en/pdiff.
Version History
Version 2.4:
NEW (macOS): Universal 2 Binary for Intel x86-64 processors
and ARM64 Apple Silicon (M1 / M2 /…)
NEW: Optimizations for speed and memory consumption
Fix: Smaller bug fixes
Version 2.3.3 (macOS only):
Fix: Compatibility with new Apple M1 chip
Version 2.3.2 (macOS only):
Fix: Compatibility with macOS Big Sur
Version 2.3.1 (macOS only):
Fix: Fixed a possible crash for PDF files containing
characters with zero height or width
Version 2.3.0:
NEW: Demo report (one page) for in-app purchase “Annotated PDF Reports”
NEW: List of page thumbnails for PDF A and PDF B
Overview of the entire document and current page
Fast page navigation
Page error counter on page thumbnails
Display of excluded pages (orange “X”)
NEW: Mouse wheel support for scrolling between PDF pages facilitates fast reviewing of long documents
NEW: Support for macOS Dark Mode
NEW: Holding the ALT key at program start shows a dialog to reset all saved window positions and layouts.
Fix: Position of word marker and displayed page when stepping through the synopsis table
Fix: Issues with resizing exclusion boxes boxes
Fix: GUI reactivity for extremely large PDF files (> 4000 pages)
Version 2.2.4:
FREEMIUM LICENCE MODEL WITH IN-APP PURCHASE
free version compares PDF files with up to 3 pages
(max. 1000 words)
in-app purchase for unlimited PDF input (free upgrade for
PDiff Express 1.x users)
in-app purchase for comparison reports as annotated PDFs
thumbnail widget of all differences for quick overview and
navigation
menu item Windows > Differences for a navigable list of
differences including differences per character
menu item Windows > Separate Windows supports splitting
into separate windows to work in dual monitor environments
retina display support
Version 1.7.0:
New toolbar
New menu item View > Show special characters
New menu item View > Show text flow
Added a statistic widget to the window status bar
Fixed a crash in conjunction with some accessibility
features of OS X 10.8 and OS X 10.9 turned on (System
Preferences > Accessibility)
Compatibility with OS X 10.10
Version 1.6.2:
Improved performance for long documents
Fix for PDFs with problematic characters (empty quads)
Version 1.6.1:
Compatibility with OS X 10.9.1
Minor changes and improvements
Version 1.6:
Compatibility with OS X 10.9
Exclusion rects (e.g. for page headers and footers): In the
PDF preview pane, click and hold at the first corner then
drag to the second corner. Right click an exclusion rect for
more options
Page ranges (right click on the PDF preview pane)
Additional settings, esp. adjustable colors
Append documents (File menu) allows to compare texts
distributed over multiple files
Version 1.5:
New parameter to prevent undesired synchronization of
differences at frequent short word sequences (e.g. “and”,
“by the”, …)
Added an alert for PDFs without extractable text
New menu items File > Open Document A/B to open files with
a file chooser dialog in addition to existing drag ‘n drop
mechanism
Version 1.4:
Fixed a memory leak
Version 1.3:
Speed-up by factor 3 or more (depending on number of CPU cores)
Version 1.2:
Fix for media box origin different from (0,0)
Version 1.1:
Improved display of differences only (switch under the text synopsis display). Hover over a diff in the lower window pane to jump directly to its position in the PDF.
PDiff Express 2.4 has been released in the Mac App
Store and for Windows in the Microsoft
Store.
With PDiff Express, private customers can compare PDF files quickly
and easily. PDiff Express is available under a freemium license, which
can be extended by in-app purchases to obtain additional features.
Our 10 insider tips are the condensate from years of work in the field
PDF comparison and the feedback from renowned customers in all
industries. We are happy to share this secret knowledge with
you.
