It helps drivers find and reserve available parking spaces through the web, making it easier to plan where to park before arriving. Users can search by specifying a location or using their current location, choose a parking date, and select a vehicle category. Supported categories include buses and large vehicles, standard cars, compact cars, and motorcycles. The service allows reservations to be made up to two weeks in advance, according to the site.

Both individual and corporate users are supported, with login and free registration options for members. Registered users can access features such as reservation lists and favorites. The website also provides usage instructions, frequently asked questions, contact information, and details about terms of use and privacy practices. By combining searchable parking availability with advance booking and vehicle-specific search options, toppi! offers a practical way to arrange parking for different needs.