e621 image search

This service is shut down until further notice due to lack of: time, effort to buy more RAM (iqdb daemon has been consuming over 50% of my server's RAM), and effort to fix scraper after e621's API was massively changed in March 2020.

Suggested replacement is sauceNAO. API example for their e621 db: https://saucenao.com/search.php?db=29&url=$IMAGEURL

Thanks to all you great users from 2012 to 2020!