Placeholder

A Placeholder is a person or thing that occupies the position or place of another place or thing. In a computer world, a placeholder can be text, images, JSON, etc.
Here are some of the cool placeholder resources that are found on the web for developers.

Text Placeholder :
https://loremipsum.io/
https://www.lipsum.com/

Image Placeholder :
https://picsum.photos/
https://placeholder.com/

JSON Placeholder:
https://jsonplaceholder.typicode.com/

Comment on some cool placeholder resources that you have come across below.