[andyfleming]

This is great!

I'd consider making the search experience more like https://www.flaticon.com/. The drop-shadow boxes are too distracting. Adding consistent spacing will help too.

I love that it's easy to get to the source, but having a page in between would be nice to see other icons from the set and information about where the icon is from.

[Fileformat]

Rather than an interstitial page, I'm thinking of overlay buttons (like Gmail has for attachments) for viewing info/the rest of the set/etc.

I like instant search better than suggestions/autocomplete. It also works with JavaScript disabled though not instant.