If you want to prevent search engine robots to crawl certain pages or articles (like your impressum) you basically have two options:
noindexHTML meta tag
Since there are already tons of tutorials and articles about how a
robots.txt works or how you write one, I'll skip this here.
If you want more information visit robotstxt.org/robotstxt.
How to use a robots.txt with Pelican1
First you have to create your
robots.txt and save it to
Then you tell Pelican to simply copy your
robots.txt to ...