John P. Bloch

Create child themes from any non-child theme with the click of a button.
This plugin is multisite compatible; if used on a multisite network, controls for creating child themes will be in the network admin instead of the regular site admin. Pick the parent theme from the dropdown and name name your new child theme. You can also change the author name and select files you want to copy from the parent to the new theme.
Click the button and you’re all set!

Child Themify

Create child themes with the click of a button.

Frank Neumann-Staude

Torsten Landsiedel

Drivingralle

Hinnerk Altenburg

Caspar Hübinger

Ralf Koller

Child Themes are used to avoid overwriting your customizations. But if you preserve a file in a child theme, then you maybe preserve a security risk. After an update from the parent theme you always should check the changes and maybe add them to your child theme. This plugin helps you keeping track of these changes in the parent theme.
For full usage of the plugin your parent theme has to define the version of the template file in the header of the PHP file with an additional @version info.
For example: <code>@version 1.0.0</code>
If this is the case you will see a warning if the version of the parent theme file is higher than your child theme file. And you can see the differences between the parent theme file and the child theme file per wp_text_diff()-function like in revisions.
Some posts about this plugin:
<ul>
<li><a href="https://krautpress.de/2016/child-theme-dilemma/" rel="nofollow ugc">KrautPress</a> (German)</li>
<li><a href="https://wptavern.com/child-theme-check-plugin-helps-wordpress-users-navigate-parent-theme-updates" rel="nofollow ugc">WP Tavern</a> (English)</li>
<li><a href="http://www.elmastudio.de/en/wordpress-plugins-child-theme-check/" rel="nofollow ugc">Elmastudio</a> (English)</li>
<li><a href="http://www.elmastudio.de/wordpress-plugin-tipp-child-theme-check/" rel="nofollow ugc">Elmastudio</a> (German)</li>
</ul>
These themes from <a href="http://www.elmastudio.de/en/" rel="nofollow ugc">Elmastudio</a> are already using the @version info in the header:
<ul>
<li>Uku</li>
<li>Uku Light</li>
<li>Weta</li>
<li>Pukeko</li>
<li>Zeitreise</li>
<li>Werkstatt</li>
<li>Neubau</li>
<li>Hawea</li>
</ul>
Please spread the word and if you are a theme developer, please add this to your themes too! Thanks 🙂

Child Theme Check

Just found it, great tool, thanks for sharing



Wow! great tool

I was bored to verify if my child themes were up to date and this plugin is a great tool to see in a glimps if you have to rework your child theme.



Great tool

This tool have been really helpful for me. Thanks a lot!



Very helpful

Thank you Thorsten et.al for this very useful plugin. I think it's a fantastic idea to check for a version header and this plugin is a good reminder of developing with a useful standard.



Does what it is supposed to

Warns you about outdated template files in your child theme and shows a diff view of the changes between parent and child theme template.

Child Themify vs Child Theme Check