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.

Mime Type Check for Contact Form 7


Mime Type Check for Contact Form 7 plugin is created after a problem arises in CF7 file upload validation, CF7 is a widely used plugin but there was a problem in validation of file mime type. The CF7 validation was only validating the file on the extension

  • File type changes by renaming it to allowed types in operating system as shown in screenshot
  • Uploaded using CF7 upload and it was uploaded susscessfully.
  • Installed the plugin and now file is validating on mime type. Renamed allwoed extensions are not catered.


  • This screen shot is showing how we can change the file type extension but not the mime type


  1. Upload cf7-mime-type-check folder to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress


Will this plugin add any tab in CF7

There is no change in UI, just one more layer added for file mime type validation.

Do we need to do any setting for this plugin

There is no special setting needed, it will work on CF7 filetypes validation.

Can we ammend the error messages

You can use the same error messages setting provided in CF7.


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Contributors & Developers

“Mime Type Check for Contact Form 7” is open source software. The following people have contributed to this plugin.




  • Plugin Developed.