Adds a new admin tab allowing to change the opt-out CSS Styles for each website.

View and download this plugin for a specific Matomo version:

1) Click on the "Settings" link located in the top menu on the right

2) Click on the "Custom Opt-Out" tab located in the "Settings" section of the sidebar on the left

3) Enter your customized CSS code into the textarea input field called "Custom Css" e.g.

  body {
    font-family: Arial, Verdana, sans-serif;
    font-size: 12px;
    color: #ddd;
    line-height: 160%;
    margin: 10px;
    padding: 0;

or insert a URL to the file containing your custom CSS into the input field called "External CSS File" e.g.

4) Click the "Save" button.

5) Use the iframe code provided below the input fields to add the Matomo (Piwik)i Opt-Out to your website.


If you want to use this plugin with a Matomo version lower than 3.0.0-b1, please use a plugin version < 1.0.0.

  • CustomOptOut

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