Always put a featured image in your posts and pages whether that's through using your page builder or WordPress editor, putting a featured image means it'll show in search results and your social media share/preview links. 💪
If you forget to add a featured image and post it on Facebook first, making the update on your website will not update it on Facebook. Your link with the preview image is now cached. To make it refresh, you can use the Facebook Debugger Tool.
- Enter your URL/link into the box and click on the 'Debug' button
- Once the results show, click on the button 'Scrape again'
Voilà! Preview image updated. 🙌