I'm not sure if my question is applicable to business environment, as required in What topics can I ask about here?. Can you check and see if it's on-topic here? Below is my draft.
What makes Open Graph checkers unable to detect Open Graph data?
<meta property="og:type" content="article" /> <meta property="og:title" content="Corner Timer: gently make you feel guilty on time-wasting apps" /> <meta property="og:url" content="https://lyminhnhat.com/resources/productivity/corner-timer-gently-make-you-feel-guilty-on-time-wasting-apps/" /> <meta property="og:description" content="Make you feel guilty for your unproductive curiosity" /> <meta name="twitter:site" content="@ooker777" /> <meta name="twitter:text:title" content="Corner Timer: gently make you feel guilty on time-wasting apps" /> <meta name="twitter:image" content="https://lyminhnhat.com/wp-content/uploads/2019/04/Screenshot_2019-04-11-11-31-39.png?w=640" /> <meta name="twitter:card" content="summary_large_image" />
However, all 3 Open Graph checkers I use - OpenGraphCheck.com, Abhinay Rathore's Open Graph Tester, Facebook's Object Debugger - say that there is no Open Graph implement. There is one exception though: Iframely's Embed Codes
Since all three checkers have problem with this, probably this is not just a problem of of Facebook, as suggested in FB OpenGraph og:image not pulling images (possibly https?). Nevertheless, nothing changes even though I have tried using html links only, stripping end white space, using
<html prefix="og: http://ogp.me/ns#">.
This person suggests that this may be a server issue. A misconfiguration, perhaps. Do you know why this happens or how to identify the problem?
- SSL certificate: Let's Encrypt
- Control Panel: DirectAdmin
- Server: Nginx