placeholder.pics - Lightest way to include placeholder images in your design
AdPlexity - AdPlexity is a popular and highly effective competitive intelligence service in the world and is a perfect fit for individuals looking up to their ad campaigns and crush the competition.
PlaceKitten - Dead-easy placeholder images. Of kittens.
MyAdLibrary - MyAdLibrary is the marketing tool that provides you the features to monitor and spy the results of the Facebook ads.
Fill Murray - Custom-sized placeholder images of Bill Murray
Adbeat - Adbeat makes your digital ads working for you in a new level.