Show Vars Debugger

Instantly view server variables and debug your WordPress site with ease. A simple & powerful debugging tool for developers.

Download Plugin (.zip)

How It Works

This plugin simplifies the debugging process by displaying essential variables in a clean, easy-to-read modal window. To activate the debugger, simply append ?showvars=1 to any URL on your WordPress site.

For security, the debugger will only be displayed to users with administrator privileges.

When triggered, a modal window will overlay the current page, presenting a comprehensive list of:

  • GET Data: Information sent to the server via the URL.
  • POST Data: Information sent from forms on your website.
  • Server Variables: A wide range of information about the server environment, headers, and configuration.
  • File Uploads: Data related to any files uploaded.
  • Cookies: Data stored in the user's browser for your site.
  • Session Information: Variables stored on the server for the user's session.
  • Environment Variables: System-level variables available to WordPress.
  • Cloudflare Headers: If your site is behind Cloudflare, it will conveniently display specific Cloudflare headers.

Licensing Information

Show Vars Debugger is released under the GNU General Public License v2 (or later). This means you are free to use, modify, and distribute the plugin. As a derivative work of WordPress, this plugin inherits the GPL license. The GPL is a "copyleft" license, which ensures that any derivative works must also be distributed under the same or equivalent license terms.