For a "clean" environment without side effects from other extensions, you can launch a dedicated instance of Chrome with web security entirely disabled. Close all other Chrome instances before running these commands if you aren't using a unique user-data-dir . Windows Open the Run dialog ( Win + R ).
: A modern Manifest V3 compliant extension that offers per-site protection and handles preflight ( OPTIONS ) requests efficiently. 2. Command-Line Launch (No Extension Required) chrome disable cors extension