Piwik is a free and open source Web analytics application.
With the Convert-Piwik integration, unique visitors to your experiments’ variations will be passed into Piwik using custom variables.
At the time of this writing, Custom Variables in Piwik are created by code and not in the UI, so you should know if you are already using any Piwik Custom Variables before you start. If you are already using Custom Variables for the same pages you intend to pass Convert data into, you should determine which indexes are in use so that you can choose a unique index number for Convert data.
Example of the data we send to Piwik:
dimension(or index) , current Experiment Name*, current Variation*, scope: "visit" (this means the custom variable applies to the current visit)
* Depends on whether you have chosen data anonymization or not (more information on this can be found here)
Enable the Integration in Convert
To enable the integration for your experiment, go to the Experience Summary, locate Settings, and under Integrations you should see a link to Add/Edit Integrations:
Under here you will find the option to enable Piwik integration and set the Dimension/Index you will use: