Custom reports are non-default reports you design. Dimension (e.g. city, age and browser) and metrics (e.g. sessions, Page view and Bounce rate ) can be set by the user in any logical combination.

See how Piwik PRO Analytics with custom reports can help you improve your analysis:

More about custom reports on the Piwik PRO blog:

Find more technical details about custom reports on the Piwik PRO help center: