WP Inspect


The WP Inspect plugin visually annotates pages with the actions & filters (hooks) invoked during the request life cycle.

Developers can inspect specific html elements, such as the page heading, to determine which filters & actions ran to generate “the_title(),” for example.

Major features of WP Inspect include:

  • Built-in lucene search engine
  • Toggle hook tracking among header, body, footer & off-canvas contexts
  • Toggle actions, filters & off-canvas hook tracking
  • Ability to ignore hooks by tag
  • Ability to watch/track hooks by tag
  • View hook details such as hook function signature, hook descriptions & syntax-highlighted data structures


  • View Actions & Filters
  • Search Actions & Filters
  • View Filter Stack
  • Search Filter Stack
  • View Hook Details
  • Admin Actions & Filters
  • Hook Argument(s) Highlighting
  • Enable For Specific Roles
  • Toggle Hook Tracking & More
  • Ignore or Watch Specific Hooks


Upload the WP Inspect plugin to your site and activate it. Voila!


Installation Instructions

Upload the WP Inspect plugin to your site and activate it. Voila!


Great tool for finding available hooks

For months now, several of my colleagues and I are using this plugin for easily finding the right hooks and filters to help our customers out. Great tool to have on your workbench.

Excellent tool

An excellent tool to aid in tracking down errors and helping with proper flow while developing plugins or themes.

Must Have

Being able to have the hooks position on the page, and to have extra infos by clicking on their ‘dots’, is a huge debugger helper !
I was stuck yesterday with a bug, it was in fact a playlist shortcode overidden by a plugin, with another plugin altering its render based on the infos providden by another plugin… a complete mess, for which WP Inspect (or more exactly, Hookr at this time) helps me a lot !

It is a bit slow, but I’m sure the author will find tricks to make it faster (maybe admin toolbar menu could be just text for eg). 😛 (and it is not as if it should be turn on everytime so it’s ok).

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Contributors & Developers

“WP Inspect” is open source software. The following people have contributed to this plugin.


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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



Initial release