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.



NEW: Microthemer Lite has just been released. Try it for free!

Microloader provides all the essential functionality for installing and managing “Micro Themes”. Micro Themes are created with the premium plugin “Microthemer“. A Micro Theme is a way of overriding a WordPress theme or plugin’s default styling. Micro Themes are a bit like CSS-only Child Themes. The real difference is when you load Micro Themes with Microloader’s premium counterpart, Microthemer. When a Micro Theme is loaded with Microthemer, all the CSS styles are editable via a WordPress admin screen designed specifically for non-technical users. Microloader doesn’t have this functionality. It has been released as a free plugin for people who would like to download a new skin (Micro Theme) for their favourite WordPress Theme or plugin (e.g. Contact Form 7) and be done with it.

Free, GPL Plugin Skins

Themeover’s inital offering of free GPL plugin skins is a number of colorful designs for the popluar Contact Form 7 plugin. Many more are sure to follow. Subscribe to Themeover’s Newsletter to stay up-to-date.

Micro Theme Marketplace

Themeover will also be releasing premium skins (Micro Themes) for regular WordPress themes. The “Headline” Micro Theme for Thematic servers an example of what’s to come. We welcome contributions from theme authors to our alternative Micro Theme marketplace.

So What’s Microthemer Then?

Watch the Microthemer demo videos to get a quick idea of just how powerful this design tool is.

Is This Plugin Supported?

Yes! Post any questions in the WordPress-hosted forum for this plugin.

Installing Microloader

  1. Upload the microloader directory to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Go to Appearance > Microloader > Install a Micro Theme or Plugin Styles

Installing a Micro Theme or Plugin Styles

To install plugin styles or a Micro Theme (the method is the same), see the instructions at the bottom of this tutorial.

Contributors & Developers

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


Translate “Microloader” into your language.

Interested in development?

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

Changelog (May 8, 2014)

Bugs Fixed

  • Found another call to the missing json class the previous version aimed to fix (2.6.1).

2.6.1 (May 8, 2014)

Bugs Fixed

  • When exporting settings to a settings pack, or invoking any function that used the json class, an error message was thrown in WordPress 3.9.
  • Various PHP notices that could display on servers with strict error reporting have been fixed.
  • E_STRICT PHP error warnings could occur with PHP 5.4 due to code aimed at maintaining compatibility with PHP 4. This code has been removed. PHP 4 is no longer supported.
  • Media queries could be re-ordered but re-ordering did not have an effect with regards to the order the media queries were written to the active-style.css styleheet.

2.4.5 (Nov 13, 2013)


  • Microloader can now load a Micro Theme with code that specifically targeting versions of Internet Explorer.

2.4.4 (Oct 3, 2013)

Enhancement/Bug Fix

  • Option added to preferences page to set the viewport zoom level for any device to “1”. This is on by default as it is necessary for the media queries to affect mobile and tablet devices correctly.

2.4.3 (Oct 2, 2013)

Bugs Fixed

  • MAJOR BUG FIXED – Style values of zero (0) were ignored (not written to the CSS stylesheet).

2.3.8 (Aug 28, 2013)


  • Now supports Micro Themes and Plugin Packs with responsive media queries
  • Now supports PHP 5.4

2.3.5 (Aug 7, 2013)

Bugs Fixed

  • Google Font variations can now be correctly used (click the variation before clicking the “Use this Font” link)
  • Google Font url uses https if necessary to prevent mixed content warnings on SSL sites.

2.2.9 (July 16, 2013)


  • Support for Google Web Fonts added

2.2.3 (July 9, 2013)


This is the last version of Microloader to support WordPress versions prior to 3.2.1 (WP 2.8 – 3.2)


  • Added support for min width/height and max width/height
  • Added support for opacity property to behaviour style group (cross-browser compatible – including IE)

Bugs Fixed

  • Fixed !important assignment on CSS3 properties.
  • Fixed undefined function errors with older versions of WordPress.
  • Removed “validate your purchase message” which never should have been there
  • Fixed problem with Micrloader hiding WordPress toolbar under some conditions (Jan 18, 2012)

Bugs Fixed

  • Microloader could break the javascript functionality of other themes/plugins by de-registering jQuery and then failing to replace it.

1.4.1 (Dec 6, 2012)

Bugs Fixed

  • The angle of CSS3 linear gradients was not rendering consistently across browsers.

1.3.8 (Aug 5, 2012)


  • Microloader now has a better method of ensuring that it’s stylesheet loads after other stylesheets (so that it can override styles without micro theme authors having to resort to !important).

1.3.2 (July 21, 2012)


  • Microloader can now be used on Multisite WordPress installs thanks to Abland’s work:

1.3 (June 7, 2012)


  • !important declarations manually added by a Microthemer author are now recognised.
  • Updated CSS3 PIE to version 1.0 – first non-beta release.
  • x-axis and y-axis units for background image position manually added by a Microthemer author are now recognised.

Bugs Fixed

  • Under some circumstances, installing a Micro Theme resulted in the Theme being renamed as “None”.
  • When a Theme enqueues it’s stylesheets there is a possibility that it’s stylesheets will be called after Microloader’s stylesheet. Microloader now checks the name of the theme so that it can specify which stylesheets should load BEFORE the Microloader stylesheet. This was found to be necessary after adding support for ClassiPress.

1.1.3 (May 14, 2012)

Bugs Fixed

  • fixed “Invalid argument supplied for foreach()
    in tvr-manage-micro-themes.php on line 90” php error

1.1.2 (March 12, 2012)

Bugs Fixed

  • The text-transform “capitalize” property was mis-spelt with an “s” so didn’t work
  • A call to an undefined jQuery object in jquery.overlay.js caused javascript problems
  • On Windows Servers, erroneous https URLs caused server to hang

1.0.7 (March 2, 2012)

Bugs Fixed

  • position styles didn’t register if applied without other style properties
  • Prevented screenshot from being cached to avoid possible confusion

1.0 (February 24, 2012)

The initial release.