There are few website that offers billions of images. The pictures in the below sites are under Creative common (CCO) license or in public domain, you can use without any copyright issues. In the following websites you will get high quality images for .
List of websites to get good quality pictures:
Google.com (Life) – The Google images site hordes lot of historical photographs from the LIFE library. If you find any query in Google image search to find images just add source:life they are free for non-commercial, personal use.
Unsplash.com – Here you can download high-resolution photographs by subscribing to the e-mail newsletter. Every ten days you will get 10 photos which has CCO license. CCO license means, these pictures are from public domain and free to use as you like.
Flicker.com ( The British library ) – In UK the national library has uploaded more than million antique photographs and skimmed images to flicker. Those images are now in public domain and inspire to re-use
Pixabay.com – In pixabay, entire images has the CCO license and can be used anywhere.
Publicdomainarchieve.com – This is a wonderful online source for public domain images. It holds only high qualities pictures and neatly organized in categories but very limited collections.
Common.wikimedia.org – This website has millions of images in the public domains. All the images arranged category wise or you can search images by using keywords.
Freeimages.com – This is a largest repository of graphics and free images. You can use it for any purpose. Though, you need to sign in to download pictures.
Picjubmo.com – The images in this website has been shot by site owner itself and he request in return is right ascription.
morguefile.com – This website clouds more than 300,000 free images and you can use images for both commercial and personal projects even without acknowledgment. In this website image gallery holds build-in cropping tool. You can also hotlink the images from your website.
gettyimages.com – Are you looking for professional images, here this site provides professional images with less license fee for you website. Embed images on your website for free from getty images, in future embeds may carry ads.
