Based on our record, UI Filler seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Working link: https://uifiller.com (I don't know how to make it a link in the body of the post). - Source: Hacker News / almost 2 years ago
Blobmaker - Create organic svg shapes in just a few seconds
Placemat - Pretty nice placeholder images.
Bloby - Generate random SVG shapes
Placeholder Loader Creator - SVG component editor to create placeholder loaders
bbburst - A simple SVG generator for colorful explosions of shapes.
placeholder.pics - Lightest way to include placeholder images in your design