Several years ago, I found a website that let me search and sort Kosher symbols by look and other characteristics. It seemed like each symbol was tagged with its distinctive features. This was very useful when trying to find information on the Kosher agency when all you had was the symbol.
For example, if one was trying to find more information about a Kosher symbol that had a Magen David, one could just look at all the symbols that had a Magen David.
There are guides that list kosher symbols, such as this one (their 2012 print edition has 1127 symbols and the online edition from 2007 has 867 symbols), but they are not searchable by symbol, only location.
I can't find the site now (maybe it no longer exists). Does anyone know of this site or a suitable replacement?