Koha OPAC indexing by crawler can slow down the server, and, at the end, the whole catalog isn't indexed. A solution, for webmaster, could be to use this tool: https://metacpan.org/module/koha-sitemap Installation (by sysadmin): cpan Koha::Contrib::Tamil How to use it: perldoc koha-sitemap More details on sitemaps principle here: http://www.sitemaps.org