https://developer.chrome.com/docs/chromium/headless
Chrome Headless mode | Chromium | Chrome for Developers
Oct 21, 2024 - Chrome's Headless mode is now more useful for developers, by bringing it closer to Chrome's regular "headful" mode.
headless modechromechromium
https://craftcms.com/blog/craft-33
Craft 3.3 Released with GraphQL and Headless Mode | Craft CMS
Aug 7, 2020 - Craft 3.3 introduces a built-in GraphQL API, Headless Mode, and templating improvements.
headless modecraftreleased