What is chromeless?

Chromeless is a tiny macOS app that strips away everything a normal web browser shows you. There is no address bar, no tabs, no toolbar, no visible window buttons at all. The window simply shows the webpage itself, which makes it useful for taking clean screenshots, watching fullscreen video, or displaying a dashboard without any distracting browser interface around it. Under the hood it is a single Swift file built on WKWebView, the same web engine Safari uses. There is no Electron and no external dependencies, and the finished app is only about 450 kilobytes once built. You build it by running a build script, which produces a Chromeless.app you can open directly or move into the Applications folder, and building requires the Xcode command line tools to be installed first. All of the browser's controls are done through keyboard shortcuts rather than visible buttons. There are shortcuts for typing a URL, moving the window by dragging anywhere on it, going fullscreen, saving a screenshot of the page to the desktop, pinning the window above other apps, moving back and forward, zooming, copying the current URL, and reloading the page. The hidden traffic light window controls reappear if you hover the top left corner. Chromeless also remembers the last page you had open and reopens it next time, and it keeps cookies and logins saved so sites like YouTube stay signed in. Beyond being a browser window, the same app can be run from the command line to turn any webpage into a PNG screenshot, which is handy for capturing local development sites or any page at a specific size. The README also explains a more advanced, optional setup involving an Apple developer account and code signing that allows passkey login support to work natively, though the app functions fine without it and simply falls back to alternative sign in methods on sites that support them. It is released under the MIT license.