Title: Child Theme Check Author: Torsten Landsiedel Published: September 26, 2015 Last modified: July 6, 2024 --- Search plugins ![](https://ps.w.org/child-theme-check/assets/banner-772x250.png?rev=1254009) This plugin **hasn’t been tested with the latest 3 major releases of WordPress**. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress. ![](https://ps.w.org/child-theme-check/assets/icon-256x256.png?rev=1254009) # Child Theme Check By [Torsten Landsiedel](https://profiles.wordpress.org/zodiac1978/) [Download](https://downloads.wordpress.org/plugin/child-theme-check.1.0.9.zip) * [Details](https://test.wordpress.org/plugins/child-theme-check/#description) * [Reviews](https://test.wordpress.org/plugins/child-theme-check/#reviews) * [Installation](https://test.wordpress.org/plugins/child-theme-check/#installation) * [Development](https://test.wordpress.org/plugins/child-theme-check/#developers) [Support](https://wordpress.org/support/plugin/child-theme-check/) ## Description 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: `@version 1.0.0` 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: * [KrautPress](https://krautpress.de/2016/child-theme-dilemma/) (German) * [WP Tavern](https://wptavern.com/child-theme-check-plugin-helps-wordpress-users-navigate-parent-theme-updates)( English) * [Elmastudio](http://www.elmastudio.de/en/wordpress-plugins-child-theme-check/)( English) * [Elmastudio](http://www.elmastudio.de/wordpress-plugin-tipp-child-theme-check/)( German) These themes from [Elmastudio](http://www.elmastudio.de/en/) are already using the @version info in the header: * Uku * Uku Light * Weta * Pukeko * Zeitreise * Werkstatt * Neubau * Hawea Please spread the word and if you are a theme developer, please add this to your themes too! Thanks 🙂 ## Screenshots * [[ * Status View * [[ * Diff View ## Installation 1. Upload the zip file from this plugin on your plugins page or search for `Child Theme Check` and install it directly from the repository 2. Activate the plugin through the ‘Plugins’ menu in WordPress 3. Activate a child theme and run the child theme check from your tools menu ## FAQ ### I just get the error: Parent theme is missing version keyword. 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: `@version 1.0.0` 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. ## Reviews ![](https://secure.gravatar.com/avatar/0b1a564da33d5dacc0dde7ff55fe7ff70c50210ca3c9b02f167f27cd912e1963? s=60&d=retro&r=g) ### 󠀁[Diff is Legit](https://wordpress.org/support/topic/diff-is-legit/)󠁿 [exius](https://profiles.wordpress.org/exius/) July 2, 2020 Diff works as advertised. It highlights changes to lines of code inside my child- theme files as compared to the parent theme files. Since I’m using a premium theme, I don’t have control over how the theme is written, so the @version detection feature will doubtfully be useful in this case since the parent theme isn’t using that on top of all their pages. They are however using the @since tag for almost every function. That seems complicated to track. Diff is already highlighting the differences between lines of code, so @since might not be too useful either. ![](https://secure.gravatar.com/avatar/6c7e1967cfda73eb916330f2c3410df42e013c2073c7bbec3b6a598ba5259903? s=60&d=retro&r=g) ### 󠀁[Great tool](https://wordpress.org/support/topic/great-tool-58/)󠁿 [John](https://profiles.wordpress.org/dsl225/) September 13, 2016 Very useful and works just fine. Many thanks for your work! ![](https://secure.gravatar.com/avatar/d910fdd7595ec843abbd6e3977b31c74c60f2115eb0a4766022b7d137ec21814? s=60&d=retro&r=g) ### 󠀁[Very helpful](https://wordpress.org/support/topic/very-helpful-292/)󠁿 [Sven Wagener](https://profiles.wordpress.org/mahype/) September 3, 2016 This tool have been really helpful for me. Thanks a lot! ![](https://secure.gravatar.com/avatar/9786181f2ac82df1c2b05de1899533eadab7a16b5e6f7462d0c11f6abe6af6bd? s=60&d=retro&r=g) ### 󠀁[Great tool](https://wordpress.org/support/topic/great-tool-403/)󠁿 [Li-An](https://profiles.wordpress.org/li-an/) September 3, 2016 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. ![](https://secure.gravatar.com/avatar/6d9d2b8c442507bf25f89fa608c61dda47835f4d36c0dfb2167923cccc7dbcef? s=60&d=retro&r=g) ### 󠀁[Does what it is supposed to](https://wordpress.org/support/topic/does-what-it-is-supposed-to-6/)󠁿 [websupporter](https://profiles.wordpress.org/websupporter/) September 3, 2016 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. ![](https://secure.gravatar.com/avatar/e82f6b94a5777e190962ec89e176d41ad08b6e8ae690fc0d8d405e3bb16d853b? s=60&d=retro&r=g) ### 󠀁[Wow! great tool](https://wordpress.org/support/topic/wow-great-tool/)󠁿 [dimitris33](https://profiles.wordpress.org/dimitris33/) September 3, 2016 Just found it, great tool, thanks for sharing [ Read all 8 reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/) ## Contributors & Developers “Child Theme Check” is open source software. The following people have contributed to this plugin. Contributors * [ Torsten Landsiedel ](https://profiles.wordpress.org/zodiac1978/) * [ Drivingralle ](https://profiles.wordpress.org/drivingralle/) * [ Frank Neumann-Staude ](https://profiles.wordpress.org/fstaude/) * [ Hinnerk Altenburg ](https://profiles.wordpress.org/hinnerk/) “Child Theme Check” has been translated into 4 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/child-theme-check/contributors) for their contributions. [Translate “Child Theme Check” into your language.](https://translate.wordpress.org/projects/wp-plugins/child-theme-check) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/child-theme-check/), check out the [SVN repository](https://plugins.svn.wordpress.org/child-theme-check/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/child-theme-check/) by [RSS](https://plugins.trac.wordpress.org/log/child-theme-check/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.9 * Tested with WordPress 6.6 #### 1.0.8 * Upublished because of problems with SVN #### 1.0.7 * Tested with WordPress 6.5 #### 1.0.6 * Fix CSS #### 1.0.5 * Fix broken layout in WordPress 5.7 (Thanks to Torsten Bulk for the report) * Fix PHP warning * Tested up to 5.7 #### 1.0.4 * not released #### 1.0.3 * Fix flashing of first diff view * More i18n improvements (Thanks @pedromendonca) * Tested up to 5.4 #### 1.0.2 * fixed some WordPress coding standards issues * added Github Updater Metadata * updated readme.txt * i18n improvements (Thanks @pedromendonca) * Tested up to 5.3 #### 1.0.1 * Fixed typo in German translation (Thanks @pixolin) * Changed text for action link on plugins page (Thanks @presskopp) * Tested up to 4.6.1 #### 1.0.0 * Initial release ## Meta * Version **1.0.9** * Last updated **2 years ago** * Active installations **800+** * WordPress version ** 3.6.0 or higher ** * Tested up to **6.6.5** * Languages * [English (US)](https://wordpress.org/plugins/child-theme-check/), [German](https://de.wordpress.org/plugins/child-theme-check/), [Italian](https://it.wordpress.org/plugins/child-theme-check/), [Portuguese (Portugal)](https://pt.wordpress.org/plugins/child-theme-check/), and [Russian](https://ru.wordpress.org/plugins/child-theme-check/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/child-theme-check) * Tags * [check](https://test.wordpress.org/plugins/tags/check/)[child](https://test.wordpress.org/plugins/tags/child/) [child theme](https://test.wordpress.org/plugins/tags/child-theme/)[theme](https://test.wordpress.org/plugins/tags/theme/) * [Advanced View](https://test.wordpress.org/plugins/child-theme-check/advanced/) ## Ratings 5 out of 5 stars. * [ 8 5-star reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/child-theme-check/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/child-theme-check/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/child-theme-check/reviews/) ## Contributors * [ Torsten Landsiedel ](https://profiles.wordpress.org/zodiac1978/) * [ Drivingralle ](https://profiles.wordpress.org/drivingralle/) * [ Frank Neumann-Staude ](https://profiles.wordpress.org/fstaude/) * [ Hinnerk Altenburg ](https://profiles.wordpress.org/hinnerk/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/child-theme-check/) ## Donate Would you like to support the advancement of this plugin? [ Donate to this plugin ](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=LCH9UVV7RKDFY)