Download your board is an online tool that helps you download entire Pinterest boards in one click. It can be used as a simple Chrome bookmark to download zip archives of all pins from a Pinterest board.
Step 1: Visit Download your board at http://www.downloadmyboard.com/
Step 2: Drag the “Download it” button to your bookmarks bar.
Step 3: Go the Pinterest board you wish to download and click the bookmark added in Step 2.
Step 4: You will be redirected to the Download your board website with a download URL.
Extract the files in the archive and you’ll get your pins in different sizes.