URL-to-PDF API is an open-source microservice that converts web pages or HTML content into PDF documents or image files through a simple HTTP interface. The service works by launching a headless Chrome browser and rendering the requested page exactly as it would appear in a normal browser environment. Once the page has fully loaded, the system generates a PDF or screenshot that can be returned directly through the API. This approach allows developers to automatically produce documents such as invoices, reports, receipts, or archived versions of web pages. The microservice includes configuration options for controlling rendering behavior, page size, margins, and other PDF settings. It can also wait for dynamic content to load, ensuring that modern JavaScript-driven pages are rendered correctly before generating the output.