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Warnings!
Be aware not every software application,
tool or document claiming to follow a standard
is compliant with the actual standard.
Always verify!





Breaking News! / Warning!
JHOVE not suited for PDF/A validation


The ISO Standard PDF/A ensures that information in PDF documents are
permanently accessible, searchable, readable and reusable in future.

Dec. 17, 2014
JHOVE not able to ensure long-term access with PDF/A

Explore recent findings during the PDF Hackathon, September 1-2 2014, Hamburg:
The validation tool JHOVE can not correctly validate that
PDF documents conforms to the PDF/A standard.
Yvonne Friese, ZBW/Leibniz Information Centre for Economics, explains it all.

Jan. 6, 2015
JHOVE developer Gary McGath himself warns against
using JHOVE for PDF/A validation



Warning!
TIFF not suited for
long-term preservation/e-archiving and universal accessibility


The Enterprise Content Management (ECM) industry has been
standardized on TIFF-encoded images for over 25 years.
Billions of page images, most of them scanned from paper, populate
hundreds of thousands of document management system installations worldwide.
Images that are unaccessible when the ECM vendor is not there any longer.

TIFF is proprietary (Adobe owns it). Pages in TIFF are just pixels.
Images cannot substitute for documents.

Government regulations will require that text, semantics and navigation,
annotations, form-fields, digital signatures, and so on, be available to all users.
TIFF images can't be made accessible to users with disabilities,
PDF documents can (see the ISO Standard PDF/UA).

In the future the ECM/EDRM industry will be forced to abandon TIFF,
and accessibility is one of the key reasons why.
TIFF images are a non-starter in terms of accessibility.
And the regulations are coming…


Warning!
Apple’s PDF problems deepen with Sierra

Problems editing PDF files with Apple’s Preview.

Jan. 2, 2017
“Sierra PDF Problems Get Worse in 10.12.2“
Read more here.


Warning!
Apple’s Preview ignores and destroys PDF features


April 4, 2014
"Still not safe for work"

Looking at Apple's Preview,
the default PDF viewer on Mac OS.
Read more here.


Warning!
Microsoft Edge lacks support for the proper display
of many commonplace PDF features


Shortcomings in Microsoft’s Edge browser
with respect to PDF support.
What does “support PDF” really mean?
Read more here.


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