Theme Mentor – inspired by Theme-Check

Today I finally released the first version of Theme Mentor – a theme review plugin inspired by the almighty Theme-Check. Over the last year I have spent more than 200 hours fixing themes for the WordPress.org repository gone through the Theme-Check tests. There are numerous issues not covered by Theme-Check, easy to miss during your review or development process. Truth is, most of them are absolutely valid and an algorithm couldn’t be built so smart to determine whether it is a real error or not. Few of the problems covered by the first Theme Mentor version:

  • <link> or <script> tags in template files (not necessarily critical, but odds are you can resolve them properly)
  • query_posts calls
  • misspelled WordPress (i.e. all-caps or small P)
  • deregister/dequeue of jquery
  • missing wp_title function in <title> head tags

and a few more.

Theme Mentor is designed to cover every possible scenario from a subset of errors. It’s average success rate is about 70% (according to internal tests). Nevertheless, Theme Mentor is listing common errors for authors or reviewers to double check. There’s nothing bad in checking a piece of code after a notice and reassuring that everything is OK. But it’s better to have the chance to find typos or violated standards within the reported list.

Use it together with Theme-Check, as an extra subset of tests.

Note: it’s the first released version this weekend so don’t hesitate to report issues or extra validations to be covered. The project lives on GitHub under the Theme Mentor repository.


Mario Peshev is a serial martech entrepreneur, global business advisor, angel investor, and author, famous for launching a top 20 enterprise WordPress consultancy and authoring the modern startup formation book, “MBA Disrupted.”

His digital footprint includes 25 years of creating and scaling technical solutions, building and growing digital teams, starting and growing companies from zero to seven figures, acquiring and selling assets and businesses, and investing in global startups like beehiiv, doola, the Stacked Marketer, Alcatraz, SeedBlink.

Peshev spent over 10,000 hours in consulting and training activities for organizations like VMware, SAP, Software AG, CERN, Saudi Aramco since 2006. His books and guides are references in over 30 universities in North America, Europe, and Asia.


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