The following websites offers free images. Most of these websites offers Creative Commons License(CC0) and some offers free licenses with some limitations.
These websites offers breathtaking free stock photos. You can add image overlays and effects to make outstanding images.
1. Pexels
Pexels has nearly over 40,000 free stock photos. All stock photos are available under Creative Commons Zero (CC0) License. The database contains variety of images submitted by lot of sources. The incoming sources are from Raxpixel, Pixabay, etc.
The photos can be searched using its popularity and search terms. Pexels has high resolution photos and can be easily discovered. Photos are available for all kind of business needs.
You can download photos by defining your own size.
2. Picjumbo
If you wonder whether the images or free or premium that is Picjumbo. It was founded in 2013. This site was started when a photo site don't want its photos due to lack of quality.Now it has over 5,575,000 downloads.
The photos are categorized under Business,Technology, Nature,People, Fashion, Transportation and more.
3. Pixabay
Pixabay offers you images, vector graphics and videos for free. All are available under CC0 License. It has over 1 million images and videos.
The images can be browsed by categories such as Computer, Education, People, Travel, Technology and more. The photos are available under different sizes and
the sizes are predefined.
4. Unsplash
Over 300,000 images are available in Unsplash. Unsplash has good high resolutions photos and it suits most of your needs. The Unsplash community is very active.
Lot of photos are curated and uploaded in Unsplash on daily basis. I have subscribed to most of the free stock image websites in social media. Among them
Unsplash is very active.
5. Kaboompics
You can find free sock photos and mockups in Kaboompics.The photos are curated by its founder Karolina and she touches the photos using Adobe tools.
6. Stocksnap
Large collection of stock photos are available in Stocksnap. The search tools comes in handy to explore the high resolution images. Around 150 categories are available. The stock photos are also classified based on trending.
7. Startup Stock Photos
As the name indicates the stock photos are suitable for startups and tech bloggers. Startupstockphotos started to help Small Business.
8. Rawpixel
Rawpixel has stunning free pictures. Rawpixel offers royalty free images. Some of their pictures are found in Pexels with CC0 License.
9. MMT Stock
MMT(Moment) Stock offers wide collection of high resolution photos.The photos are filtered by Categories, Tags, Color and Orientation. MMT was launched in 2014 by its founder Jeffrey Betts. Through MMT Jeffrey Betts shares free CC0 photography for personal and commercial.
10. Makerbook
Makerbook is a directory for free resources like stock photos, mockups, fonts, videos and more. Makerbook was launched in 2015. The stocks are collected from 30+ sites and suits best for startups.
Before downloading and using the images check the license of each image.