By default, the TCPDF package adds an invisible link (transparent text, tiny font) to the TCPDF homepage at the bottom of all generated pages (see http://kreativschmiede.blogspot.dk/2010/12/tcpdf-getting-rid-of-hidden-c... for a more detailed explanation).
The link is invisible to the naked eye, but it is included if you copy-paste the entire text in the PDF to e.g. a text editor. The text "Powered by TCPDF" also shows up in Google search results, and the link probably passes PageRank to the TCPDF website, www.tcpdf.org.
I suggest disabling this branding link in the PDF files generated by the Print_pdf module.
For the record, back in 2010 the author of the TCPDF package wrote that removing this link is a violation of the LGPL license (see https://sourceforge.net/p/tcpdf/discussion/435311/thread/51f93bdd ). However, to the best of my knowledge, the LGPL does not impose such restrictions on the output generated by programs. Also, in 2012 the author added a switch to disable the link (see https://sourceforge.net/p/tcpdf/feature-requests/225/), so this implies that it can be removed without violating the license.
Comment | File | Size | Author |
---|---|---|---|
tcpdf-link-7.x-1.x-1.patch | 1.05 KB | c960657 | |
#1 | tcpdf-link-7.x-2.x-1.patch | 1.34 KB | c960657 |
Comments
Comment #1
c960657 CreditAttribution: c960657 commentedComment #2
jcnventura CreditAttribution: jcnventura commentedThanks for the patch!
http://drupalcode.org/project/print.git/commit/4982ec3