The 404 page causes loss of customers without you even noticing and, as statistics show, most of the visitors following a bad link to your shop would not continue their search.
There are a lot of shopify apps out there that allow you to scan, analyze and redirect invalid urls.
While this is something that you definitely should take care of, a lot of visitors will still land on your 404 page for a number of reasons.
404 pages aren't bad and can be a great opportunity to turn visitors into buyers!
That said, this app allows you to display content to your 404 visitors based on what they were looking for
Smart404 allows you to add as many rules as you want.
You can show specific collections, display product search results, videos and more to turn your 404 visitors into buyers!
Here you can see a short continuos screencast on youtube, that shows you how smart 404 works.
We are a small team of passionate developers and designers that have specialised on building shopify Applications.