Download a pdf only after answering a question - how?

  • motionmountain
  • Beginner
  • Beginner
  • motionmountain
  • Posts: 51

Post 3+ Months Ago

My site,, gives away a free physics textbook in pdf form. It is 100 MB long, because of its many figures and films. I now have a problem with bots, which eat much of the bandwidth.
How can I program a webpage in such a way that the pdf can be downloaded only after a question is answered? E.g. "what is the letter used as symbol for the speed of light?"

Any help or advice would be greatly appreciated!

  • spork
  • Brewmaster
  • Silver Member
  • spork
  • Posts: 6296
  • Loc: Seattle, WA

Post 3+ Months Ago

Please don't post your question in multiple forums -- use your original:


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