Simple Debug Info Panel (simple-debug-info-panel) free WordPress plugin

Summary

Simple Debug Info Panel for WordPress will enable you to instantly see some “under-the-hood” debugging info for your site. With one click (or none at all), you can see which template is being used, what the post/page ID is, the current screen/viewport size, any categories a post is assigned to, and some more.

Every item’s visibility can be turned on or off, so you have complete control over what will be shown in the infobox.

Features

• Shows template information: see which template is being used for any page you’re looking at.
• Shows post/page ID: gives you the internal WordPress ID of the current post/page.
• Categories/tags: shows relevant categories and tags of the post/page (if they are not displayed on the page itself).
• Screensize indicator: shows the viewport size, updates in real time (so you can figure out why styles within a certain media query are applied or not).
• Turn on/off which information you want to see: you can choose whatever you want the infobox to show.
• Positioning of box: choose placement of the box from 4 options (top left, top right, bottom left, bottom right)
• Default shows or hides: choose whether infobox should be open or closed/minimized by default
• Admin Only-mode: make infobox only visible on the front end to users logged in with admin rights.