Google Webmaster or Google Search Console is one of the most powerful tools to track your site’s search performance.
You can use the Search Console to monitor and optimize Google Search results data for your website (which is called a property in the search console).
To know more about the features of Google Webmaster, you can check out the official page.
You can verify your Pixpa website URL directly (www.username.pixpa.com) or a custom domain (that you have connected with your Pixpa website).