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How to fix CSS and JS files with mixed content on other domains

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If you have Really Simple SSL Pro installed, you might get the warning that your site contains references to JS or CSS files on other domains which in turn contain non-secure links.

For example, your site might include a .js file from a service you run on your site. If this JavaScript file, in turn, includes another file over http://, this will result in mixed content errors.

To fix this, you can try to ask the file owner on that other domain to change the URLs from http:// to //, which would make the script protocol independent.

If that is not possible, you can:

  • Download the file
  • Look up the http:// link and change it into //
  • Upload the file to your own site
  • Lookup the file or post where the file was included
  • Change the URL of the link, so that it points to the new file.

If this file is included in a plugin or theme, contact the plugin/theme author to request this update. Most would be happy to make this improvement.

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