 <p>Check the URL in Facebook Debug Tool, <a href="https://developers.facebook.com/tools/debug/" rel="nofollow">https://developers.facebook.com/tools/debug/</a>. Scrape your URL again and again and check. It will display the error that you are missing.</p> <p>The minimum image size is 200 x 200 pixels. If you try to use an image smaller than this you will see an error in the Sharing Debugger.</p> <p>Refer the link,</p> <p><a href="https://developers.facebook.com/docs/sharing/best-practices#images" rel="nofollow">https://developers.facebook.com/docs/sharing/best-practices#images</a></p>