If you nail your Pinterest SEO you can rank on Google. When you make quality pins with relevant keywords you increase the chances of repins and likes from other users. And when a user repins your image the source link remains attached, and this will help direct more traffic to your website. More people clicking on your site will boost your visibility in Google’s SERPs (Search Engine Results Pages). Over time this will lead to higher rankings on Google. Source

Pins on Pinterest have a long shelf life compared to social media platforms. If your pins are well-designed and keyword-rich, they can show up in Pinterest search results, gaining visibility and being shared by other users for years to come. This exposure can lead to increased brand awareness and potentially encourage users to search for your brand or content directly on Google.

Pinterest is a visual search engine. Optimizing your pin descriptions, titles, and boards with relevant keywords will help your pins rank higher within Pinterest's search results. These optimized pins could then lead users to your website through referral traffic.

Repurposing your existing content into visually appealing pins is a way to reach a wider audience. If you have valuable blog posts or articles, converting the main points into pins will attract Pinterest users who may not have discovered your content otherwise. As these users engage with your pins, some might visit your website for more detailed information.

Pinterest offers "Rich Pins" that provide additional information alongside the pinned image. These can include product information, recipes, article details, and more. Using these types of pins appropriately can make your content more appealing and provide users with immediate information, potentially leading them to visit your website.

Lastly, if Pinterest users find your content valuable, engaging, and relevant, they might spend more time on your website, lower your bounce rate, and increase your overall user engagement metrics. These factors are considered by Google when ranking websites.