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19 Aug
2015
19 Aug
'15
3:35 p.m.
On Wed, Aug 19 2015, Kip Warner wrote:
I was thinking that there must be some way of tricking these bots, depending on how they are implemented, and let's assume they will always find the PDF, to get them to extract only a small invisible layer that just contains some hidden text directing a user to the location to download the original high quality ConTeXt PDF.
Even if you would find a way today, tomorrow there would be other bots, that see the same text, as the humans.
Any suggestions?
Get the value of HTTP_USER_AGENT and send the replacement text, if the agent is a bot. Or use robots.txt. -- Peter