How can I update the thumbnail that appears when sharing my Webflow site link on SMS or social media messengers to be a thumbnail of my site?

To update the thumbnail that appears when sharing your Webflow site link on SMS or social media messengers, you need to specify the thumbnail image using Open Graph (OG) tags. Open Graph is a protocol that allows you to control how your website's content is shared on social media platforms.

To set the thumbnail image, you can follow these steps:

1. In the Webflow Designer, navigate to your site's settings by clicking on the top left menu and selecting "Project Settings."

2. In the Project Settings, select the "SEO" tab.

3. Scroll down to the "Open Graph" section. Here, you can add or edit the Open Graph tags for your site.

4. To set the thumbnail image, you'll need to add the `og:image` meta tag. Click on the "Add Field" button, then choose "Custom."

5. In the "Name" field, enter `og:image`. In the "Content" field, paste the URL of the image you want to use as the thumbnail. Make sure the image URL is publicly accessible.

6. Save the changes, and that's it! The next time you share your Webflow site link on SMS or social media messengers, the specified image should appear as the thumbnail.

It's worth noting that different social media platforms have specific requirements and best practices for thumbnail images. Ideally, you should use an image with the recommended dimensions and aspect ratio for each platform. For example, Facebook recommends using a thumbnail image with a minimum size of 1200 x 630 pixels and a 1.91:1 aspect ratio.

Additionally, keep in mind that it may take some time for the changes to be reflected when sharing your site link. Make sure to test the sharing functionality on different platforms to ensure that the desired thumbnail appears as expected.