This plugin is outdated and might not be supported anymore
Robots.txt Extender

Robots.txt Extender

Details
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A Multisite Network plugin that removes the automatic sitemap link (deprecated practice) and adds custom parameters/lines at the end of the default Robots.txt whenever called. It will enable small adjustments for each site on the network – like pointing again to specific sitemaps if needed – without sacrificing the default conventions coded to WordPress’ core. To make the adjustments, look for a text area at the end of General Settings Page.

Details

Plugin code:
robots-txt-extender
Plugin version:
1.0.0
Outdated:
Yes
WP version:
5.0 or higher
PHP version:
7.0 or higher
Test up to WP version:
5.0.22
Total installations:
10
Last updated:
2020-08-22
Rating:
Times rated:
0
crawler
robots
robots-txt
robotstxt
spiders