Facebook Link Preview Debugger: Fix Broken OG Tags

You've just published a blog post. You paste the link into Facebook to share it, and... no image. Or worse, the old title.

The Culprit: Open Graph Tags

Facebook relies on specific meta tags in your website's header, known as Open Graph (OG) tags, to understand what to display.

• og:title: The headline of your article.
• og:description: A short summary.
• og:image: The URL of the image you want to show.
• og:url: The canonical URL of the page.

Why Changes Don't Show Up Immediately

Facebook caches link previews aggressively. If you share a link, realize the image is wrong, change it on your site, and share it again, Facebook will still show the old image.

Using the Sharing Debugger

The official Facebook Sharing Debugger is the tool to clear this cache. Simply paste your URL and click "Debug". If the data is old, click "Scrape Again".

"Never assume your link preview will work. Always test it."

The Role of Image Optimization

Sometimes your image is too large, or the aspect ratio is wrong. Facebook prefers images that are 1200x630 pixels.

Make sure you read our guide on optimizing Facebook images to get the technical details right.

Simulate Before You Scrape

Debugging is reactive. Simulation is proactive. By using a tool like TryMyPost, you can upload your image and type your title to see exactly how it will look *before* you even publish the page.

This is crucial for ensuring your mockups match reality.