Since Calisto MT is a Windows system font, the file looks fine on my Windows PC: If you click on any of them you get an error like this one:įile calistoMTNoFontsEmbedded.pdf uses Calisto MT, but the font is not embedded. The file movie.pdf contains references to external multimedia files. I wasn’t able to configure Acrobat to use a media player that supports Quicktime 1. This is what happened when I opened the file on my PC:Īfter I clicked on Get Media Player, I was taken here: Acrobat cannot render this format natively, and relies on an external player. Print passwordįile encryption_noprinting.pdf can be opened normally, but you cannot print it:įile embedded_video_quicktime.pdf contains multimedia content in Quicktime format.

Without the password, the file cannot be opened at all. If you try to open file encryption_openpassword.pdf in Adobe Acrobat, you end up with this dialog: Below are some examples I included download links, so you can try them out for yourself. More details can be found in the PDF entry of the OPF File Format Risk Registry. fonts that are not embedded in a document), and reliance on external software. This includes encryption and password protection, external dependencies (e.g. The PDF format has a number of features that don’t sit well with the aims of long-term preservation and accessibility. Second, it provides some tentative suggestions of how the ongoing work on the new VeraPDF PDF/A validator could close some of the gaps and limitations of the SCAPE work.

The purpose of this 2-part blog is twofold: first it is an attempt to give an accessible overview of the earlier work on PDF preservation risks, stressing the importance of PDF/A validator tools in detecting these risks. Those blogs very much represent different stages of a work in progress, and I think this makes them somewhat challenging for readers who are new to the subject. Most of this has already been covered by a series of earlier blog posts. My initial idea was to give an overview of the work we did on PDF preservation risk assessment using a PDF/A validator in the SCAPE project.

It was prompted by the upcoming Digital Preservation Coalition briefing When is a PDF not a PDF?, for which I was asked to prepare a presentation. This is the first instalment of a 2-part blog.

Calisto mt font for google docs