And, so here is a tool to do just that. Enter the URL to the board you’re interested in and it will go and grab the page HTML and pick out the board ID for you.
What URL do I use?The easiest thing is to go to the board you’re interested in and copy the URL from your browser address bar. Then copy it into the field and press the button(ENTER).
It’s giving me an errorWhat to do depends on what the error is. First, this does check to make sure that the URL is on pinterest.com. It doesn’t really make sense to check for a Pinterest board ID on other sites. If you’re entering a correct address and it’s still telling you that it can’t find the board ID, let me know in the Report a Problem. Maybe Pinterest changed something. This was working when I posted the page, but things change.