WordPress Theme Detector
Detect WordPress themes, plugins, and servers from a URL
Features
Detect themes and plugins at once
Display theme name and plugin list together from a single URL
Show official name and parent theme
Read official name and parent theme from style.css and display alongside folder name
Estimate server provider
Estimate from reverse DNS lookup and response headers, distinguishing CDN-routed sites
Display detection basis as-is
Show detected paths and reverse lookup hostnames in each block
How to Use
Enter the URL you want to check
Enter the website URL in the input field (https:// can be omitted)
Run detection with the Check button
Press 'Check' or Enter key for the server to read the site and detect theme, plugins, and server
Review the three blocks
Read the results and basis in the theme, plugins, and server provider blocks, then enter another URL and run again
Use Cases
Research reference blog themes
Check which theme and parent theme a reference blog uses
Understand competitor site plugins
Learn the plugin configuration (contact forms, SEO, cache, etc.) used on competitor sites
Compare servers before migration or launch
Check which server provider a reference site uses before migrating or launching your site
Inventory inherited sites
List themes and plugins on inherited sites before accessing the admin panel
Knowledge Base
WordPress themes and child themes
A WordPress theme is a set of files that determines how a website looks, placed as folders under wp-content/themes.
- Child theme：A child theme inherits the design and functionality of a parent theme while overriding only parts of it. The parent theme folder name is specified in style.css under 'Template:'.
- Theme name and folder name：Theme name is the display name in style.css under 'Theme Name:' and is separate from the folder name (e.g., cocoon-child-master), so they may not match.
Why can themes and plugins be detected from HTML?
WordPress pages load CSS and JavaScript from paths like /wp-content/themes/folder-name/ and /wp-content/plugins/folder-name/, so folder names appear in the HTML.
- When detection fails：Plugins that don't output loaded files in HTML, or sites that change the location or name of wp-content, cannot be detected externally.
Why server provider estimation can be wrong
Server provider estimation is based on whether the reverse DNS hostname of the connection IP address (e.g., sv12345.xserver.jp) ends with the provider's domain, so servers without reverse DNS configured cannot be identified.
- Sites using CDN：Sites routed through CDNs like Cloudflare show the CDN's IP address externally, so the actual server provider cannot be determined.
Safety and Privacy
Server-side processing
Input is processed on the server; only information necessary for the inquiry is sent.
Temporary processing only
For WordPress theme detection, temporary processing occurs on the server, then data is discarded after results are returned.
Communications encrypted with HTTPS
All sent and received data is encrypted by TLS and cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
Query only the input site and DNS
Retrieves the page and theme's style.css, uses DNS only for reverse lookup, and does not send data to detection services
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Updates
- update #298
New tool added to detect WordPress theme, plugins, and server provider from URL