Google allows you to search for images and provides you with a massive number of results for your queries but you cannot search specifically for images that you may want to reuse without committing any copyright infringements.
For instance, if you want to use some images commercially on your website, you need to download the ones which are not copyrighted by someone else. CCfinder can solve your issue.
CCFinder is an application for Windows PC that allows you to search for pictures published under the Create Commons License. You can easily search for pictures that you can re-publish or share without worrying about breaking any law or paying any royalties to the original owner.
The app has a simple user interface where you can input the keywords for search and then select the image license type. You can filter the search criteria as well.
Once the results are available,click the Enlarge button to access image-specific options. You can click on the image to download them, visit the original website or even set them as wallpaper.
The app also provides an option to apply different effects on the image.
Download CCFinder [works on both 32-bit and 64-bit versions of Windows XP. Windows Vista, Windows 7 and Windows 8.]