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.
Freepik - More than a million free vectors, PSD, photos and free icons. Exclusive freebies and all graphic resources that you need for your projects
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Pixabay - Over 270,000 free photos, vectors and art illustrations
PNGEgg - PNGEgg is a library of transparent sticker png images for designers.
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