Pdf is quite a standard. One might wonder what it cannot do. One could call it evil.
http://superuser.com/questions/368486/link-to-image-within-pdf-and-have-the-image-displayed David Hofstee Deliverability Management MailPlus B.V. Netherlands (ESP) -----Oorspronkelijk bericht----- Van: NANOG [mailto:nanog-boun...@nanog.org] Namens Seth Mos Verzonden: Thursday, November 13, 2014 2:26 PM Aan: NANOG list Onderwerp: Mozilla performing pdf.js DNS queries? Hi, Whilst rummaging through some DNS (dnsmasq) logs I've noticed quite a decent amount of queries for pdf.js from what appear to be mozilla browsers. Seems rather odd that it is performing DNS queries for a internal PDF viewer. Has anyone else come across these lookups? Kind regards, Seth