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This would means browsing through the many various screens of the back-office and deleting content one page after the other, but there is much easier way:
- Go to the "Modules > Modules" page,
- Find the "PrestaShop Cleaner" module and click its "Install" button,
- You are directly taken to its configuration page (if not, click its "Configuration" button),
- Click the "Delete Catalog" button: it will delete all your products and their attributes, manufacturers, etc.
- Click the "Delete Orders & Customers" button: it will delete all your orders and your customers.
- Finally, click the "Check & fix" button to refine your database integrity.
THERE IS NOW NO WAY BACK. Be sure to only click these buttons only if you do intend to wipe your database from its default content.
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