It is designed to help users publish a simple website without configuring DNS or managing a separate hosting setup. After creating an account with an email address and password, users can choose a subdomain name, such as portfolio.firehostapp.com, and upload their website files. Supported content includes HTML, CSS, JavaScript, and images, with an index.html file used as the site’s entry point.

Uploaded sites are made available online immediately, and HTTPS is provided with automatic SSL, so users do not need to arrange a certificate themselves. The service allows up to 10 subdomains per account at no charge. firehostapp also provides a preview of the selected address and links to pricing information and its Telegram channel. In addition, the site invites visitors to report services that misuse the platform, including gambling, phishing, and scams. Overall, firehostapp focuses on straightforward publishing for users who want to put web files online quickly using a free subdomain.