Headless Browser

A web browser executing all functions (HTML, CSS, JavaScript) without a graphical user interface (GUI): essential for automation.

Headless browsers operate entirely via a command-line interface (CLI) or API, skipping the resource-intensive GUI rendering process. This makes them significantly faster and highly efficient for automated tasks. Key use cases include running end-to-end UI tests, performance testing, and advanced web scraping of dynamic, JavaScript-heavy sites. Tools like Puppeteer, Playwright, and Headless Chrome/Chromium leverage this technology to simulate real user interactions, ensuring reliable automation at scale without the visual overhead.

https://en.wikipedia.org/wiki/Headless_browser