Use Google Structured Data Testing tool to test this markup
Note : Semantic Markup has been restricted to first entities as you are not logged in.
<script type="application/ld+json">{"@context":"https://schema.org","@type": "WebPage","@id":"#main","mainEntityOfPage":{"@type":"WebPage", "@id":"http://cardknowhow.com"}, "headline":"Apache HTTP Server Test Page powered by CentOS","description":"Apache 2 Test Page+br+","about":[{"@type": "Thing","name": "HTTP","sameAs": ["https://en.wikipedia.org/wiki/HTTPS", "https://www.wikidata.org/wiki/Q44484"]},{"@type": "Thing","name": "Server","sameAs": ["https://en.wikipedia.org/wiki/Server_(computing)", "https://www.wikidata.org/wiki/Q44127"]},{"@type": "Thing","name": "Test","sameAs": ["https://en.wikipedia.org/wiki/Cricket", "https://www.wikidata.org/wiki/Q5375"]},{"@type": "Thing","name": "website","sameAs": ["https://en.wikipedia.org/wiki/Website", "https://www.wikidata.org/wiki/Q35127"]},{"@type": "Thing","name": "mail","sameAs": ["https://en.wikipedia.org/wiki/Email", "https://www.wikidata.org/wiki/Q9158"]}],"author":{"@type":"Organization","url":"/","name":"/"},"publisher":{"@type":"Organization", "name":"/", "url":"/", "logo": {"@type": "ImageObject", "url": "http://www.example.com", "width": 4, "height": 97}},"datePublished":"2025-05-09T15:59:41","dateModified":"2025-05-09T15:59:41"}</script>
Just ask us to configure SemanticMarker to exactly fit your content...
... and it will deliver 100% accurate detailed Schema Markup.
Apache HTTP<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">HTTP</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/HTTPS" />
</span> Server<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">Server</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Server_(computing)" />
</span> Test<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">Test</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Cricket" />
</span> Page powered by CentOS
Apache 2 Test Page
This page is used to test the proper operation of the Apache HTTP server after it has been installed. If you can read this page it means that the Apache HTTP server installed at this site is working properly.
The fact that you are seeing this page indicates that the website<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">website</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Website" />
</span> you just visited is either experiencing problems or is undergoing routine maintenance.
If you would like to let the administrators of this website know that you've seen this page instead of the page you expected, you should send them e-mail. In general, mail<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">mail</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Email" />
</span> sent to the name "webmaster" and directed to the website's domain<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">domain</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Domain_name" />
</span> should reach the appropriate person.
For example, if you experienced problems while visiting www.example.
You may now add content to the directory<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">directory</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Web_directory" />
</span>
Note that until you do so, people visiting your website will see this page and not your content. To prevent this page from ever being used, follow the instructions in the file
You are free to use the images<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">images</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Image" />
</span> below on Apache and CentOS Linux powered HTTP servers. Thanks for using Apache and CentOS!
For information<span itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">information</span>
<link itemprop="sameAs" href="https://en.wikipedia.org/wiki/Information" />
</span> on CentOS please visit the CentOS website.
CentOS is an Operating and it is used to power this website; however, the webserver is owned by the domain owner and not the CentOS Project. If you have issues with the content of this site, contact the owner of the domain, not the CentOS Project.
Unless this server is on the centos.org<span itemscope itemtype="http://schema.org/Organization">
<span itemprop="name">centos.org</span>
<link itemprop="url" href="http://centos.org">
</span> domain, the CentOS Project doesn't have anything to do with the content on this webserver or any e-mails that directed you to this site.
For example, if this website is www.example.com<span itemscope itemtype="http://schema.org/Organization">
<span itemprop="name">www.example.com</span>
<link itemprop="url" href="http://www.example.com">
</span>, you would find the owner of the example.com<span itemscope itemtype="http://schema.org/Organization">
<span itemprop="name">example.com</span>
<link itemprop="url" href="http://example.com">
</span> domain at the following WHOIS server: