Freight Modifier


Freight Modifier is a WooCommerce plugin that allows WordPress administrators to modify shipping rates based on specific settings. With this plugin, you can either increase or decrease the shipping cost, either by a fixed amount or a percentage.


  • Enable or disable the modification of shipping rates.
  • Choose between increasing or decreasing the shipping cost.
  • Set the modification amount as a fixed value or a percentage.
  • Activity log option, allowing you to monitor changes applied to shipping rates.
  • Simple and direct integration with WooCommerce.


  1. Upload the plugin to the /wp-content/plugins/ directory, or install the plugin directly through the WordPress plugins screen.
  2. Activate the plugin through the ‘Plugins’ screen in WordPress.
  3. Access the plugin settings in WooCommerce > Settings > Freight Modifier to adjust the options.


Does the plugin support negative shipping values?

Yes, you can configure it to apply a discount on the shipping rate, resulting in a reduced final value.

Is the plugin compatible with all versions of WooCommerce?

The plugin has been tested with WooCommerce version 8.4.0. We always recommend using the latest version of WooCommerce to ensure the best compatibility.


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Contributors & Developers

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


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Interested in development?

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



  • Initial release of the plugin.