How to Unpin in Pinterest
While you know how to pin photos on the Pinterest website, knowing how to remove them is just as important. The power of deletion keeps your boards tidy and gets rid of images you no longer want to share with your friends and the world at large. While deleting an image removes it from your board, it doesn't remove it from the pin board of anyone who repinned it.
Log in and navigate to the photo you want to unpin. Hover your computer's cursor over the image in question.
Click the pencil icon "Edit" button to pull up the Edit Pin window.
Click the "Delete Pin" button. Click "Delete Pin" once more in the confirmation window.