Steps to follow for adding images:

Step 1: type https://search.creativecommons.org on your search bar.
Step 2: type in the name of the image you are interested in searching, turn the “use for commercial purposes;” option off, and don’t forget to click the Flickr Image option down below.
Step 3: click on the image of choice.
Step 4: click on the “Some rights reserved option” below to verify that the image can be used, press the arrow on the bottom right to share the image.
Step 5: copy and paste the link on your blog.
Step 6: copy the name of the image’s author.
Step 7: add [image: (your search), por (author). Licencia. CC. Some rights reserved]

You can also check out these other websites for more images or gifs:

  1. https://unsplash.com
  2. http://pixabay.com
  3. http://gifcities.com
  4. http://photon.com