Webflow has its own Open Graph Image URL field for each page.
To add Open Graph Image, you need to:
Create an image with recommended dimensions—at least 1200px by 630px and with 1.91:1 aspect ratio.
Upload it to Webflow.
Open it in a new tab as shown on the image above.
Copy its URL from a browser’s address bar.
Paste the link to the Open Graph Image URL field for the required page as shown on the image.
If you need to insert the same image throughout the site, add meta tag with a link to your open graph image to the Head section in Webflow project settings instead: