I posted about this earlier sometime ago. But wanted to do so again as I have been using it for nearly all my “featured images” pics (as in this post).
It is truly a great site with tons of amazing pictures, videos, Illustrations, Vector graphics and more! You can find over 1.4 million royalty free media, produced by some very talented people. With more uploaded everyday.
You can download without signing up, up to 1920×1281 resolution. Anything larger you will have to create an account.
The layout is simple, easy to use, beautiful and not cluttered with adds. I can only recommend this site!