ROBOT.LK

I will configure the robot.txt file to avoid indexing PDF files in this example.
There are two methods.

1. You can store all your PDF files inside a directory and block that being index by bots

   Code: Select all

   User-agent: *
   Disallow: /pdf-directory/

2. Block PDF file types (since we use $ at the end, this will block any URL that ends with pdf)

   Code: Select all

   User-agent: *
   Disallow: /*.pdf$

These examples will block all bots. If you want to block a specific bot (Google bot for example) you may define User-agent as below. See https://robot.lk/viewtopic.php?f=74&t=1474 for more information.