In order to verify--or claim--your website with Pinterest, it is required that a certain file be uploaded to your site's root directory. 

Claim your site using the Pinterest verification file

1. Sign in to your Pinterest account.
2. Click the icon on the top right and then go to Edit Settings.
   
3. Click the Claim Website link.
   
4. In the Claim Website section, enter your domain name in the available field then click the Claim website button.
   
5. In the Pick claim option dialog:
   • Select the radio button next to Upload HTML file.
   • Click the Download button. The file will be downloaded to your computer.
   
6. Click the Next button.
   
7. In the Submit for review dialog, click the Submit button.
   
8. Scroll down and click the Save settings button.
   
9. The HTML file downloaded to your computer will have a file name similar to pinterest-XXXXX.html.
10. Follow these steps to upload the pinterest-XXXXX.html file using the File Manager.

Pinterest will send you an email within 24 hours to confirm that your site has been claimed. On the Pinterest settings page, there will be a checkmark highlighted in green next to your domain name to confirm the site has been claimed.

If you wish to unclaim your site, click the Unclaim website button.