Unsplash - Unsplash is a website with high-quality free HD images. It has a catalog of more than three hundred thousand striking images that are neatly organized with tags. Read more about Unsplash.
Coverr - Beautiful free stock videos for any use
Pixabay - Over 270,000 free photos, vectors and art illustrations
Bideo.js - Fullscreen HTML5 background videos for the web
Openverse - Openverse is an Openly Licensed Images and Audio database and a growing community of photographers, illustrators, and musicians who share their work under a Creative Commons license.
XStockvideo - Free HD videos loops for awesome landing pages