Unsplash
Unsplash has over 2 million free high-resolution images brought to you by the world’s most generous community of photographers. Unsplash is a platform powered by an amazing community that has gifted hundreds of thousands of their own photos to fuel creativity around the world.
Pixabay
Pixabay is a vibrant community of creatives, sharing copyright-free images, videos and music. All contents are released under the Pixabay License, which makes them safe to use without asking for permission or giving credit to the artist — even for commercial purposes.
Pexels
Pexels provides high-quality and completely free stock photos licensed under the Pexels license. All photos are nicely tagged, searchable and also easy to discover through discover pages.
Yandex Images
Yandex Images has a huge collection of funny pictures, backgrounds for your desktop, diagrams and illustrated instructions — answers to your questions in the form of images.
Adobe Stock
Adobe Stock offers high-quality free stock photos, vectors and videos you can use for commercial purposes with confidence.
Freepik
Freepik is a search engine that helps users find high-quality photos, vector images, illustrations and PSD files for their creative projects.
Stockvault
Stockvault has sole purpose is to collect and archive high-resolution photographs that photographers, designers and students can share and use for their personal and non-commercial design projects.
Picjumbo
picjumbo is a free stock photo site created in 2013 by designer & photographer Viktor Hanacek. picjumbo is one of the best sites with free stock photos featured in the biggest online publications.
Morguefile
Morguefile is a free photo archive “for creatives, by creatives.” Founded by Michael Connors in the early Internet days of 1996, the site was created to serve as a free image exchange for creative professionals and teachers to use in their work.
Gratisography
Gratisography has the world’s quirkiest collection of high-resolution free stock images, comprised of the world’s best, most creative pictures — images you just won’t find anywhere else.
PikWizard
PikWizard has a stunning library of over 1 million high-quality stock images and videos. Royalty free and safe for commercial use, with no attribution required.
Rawpixel
Rawpixel provides free images, PNGs, stickers, backgrounds, wallpapers, graphic templates and PSD mockups. All are safe to use with commercial licenses.
Reshot
Reshot provides free icons, illustrations & photos which allows you to design freely with instant downloads and commercial licenses. No cost. No attribution. No worries.
Splitshire
Splitshare allows you to download a private collection of free stock photos, free stock videos & high-resolution images for personal and commercial use instantly.
Stocksnap
Stocksnap offers beautiful, high-quality stock photos for just about any use you can think of — including commercial usage — for free. No tricks, no gimmicks, no fine print; just dazzling images for your creative projects.
Hope this will be helpful.