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.


My name is Mario Peshev, a global SME Business Advisor running digital businesses for 20 the past years.

Born in Bulgaria, Europe, I gained diverse management experience through my training work across Europe, North America, and the Arab world. With 10,000+ hours in consulting and training for organizations like SAP, VMware, CERN, I’ve dedicated a huge amount of my time to helping hundreds of SMEs growing in different stages of the business lifecycle.

My martech agency DevriX grew past 50 people and ranks as a top 10 WordPress global agency and Growth Blueprint, my advisory firm, has served 400+ SME founders and executives with monthly ongoing strategy sessions.


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