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Command-line flags

Flag Purpose
--user-data-dir Separate profile directory, isolating the debugging instance from your normal browser
--remote-debugging-port Enables remote debugging on the specified port
--remote-allow-origins Allows all origins to connect to the debugging port
--disable-backgrounding-occluded-windows Keeps background tabs active
--window-size Sets the browser window size
--enable-automation Enables automation features
--no-first-run Skips first-run setup screens
--headless=new Runs Chrome without a visible window (optional, toggled in the popup)