Frequently Asked Questions about Facebook Share Cards
How does Facebook identify which card image to load?
Facebook relies entirely on the `` tag. Make sure this URL is absolute and links directly to a JPG or PNG asset on a publicly accessible web server.
Why isn't my updated preview showing up on Facebook?
Facebook heavily caches metadata to optimize performance. You must head to the official Facebook Sharing Debugger, paste your URL, and click "Scrape Again" to clear their internal caching layer.