how to manually add pin-it to an image

Hi, I always have my images in the content have PIN-IT. I have 1 image in the footer that I also need to have PIN-IT. I’m not sure how to do this. I tried wrapping the footer image in the following: div class=”jpibfi_container”> but that did not work. I could add a class which all the images need to have to display PIN-IT but then I would have to go through all my posts and manually add this class to each image.

Please let me know what I can do.

Thanks!

https://www.ads-software.com/plugins/jquery-pin-it-button-for-images/