StopTheMadness Pro 9 introduces a new feature that allows users to run custom scripts on any web page.The JavaScript snippets feature is supported in Safari on macOS and iOS, as well as in Firefox.Unfortunately, the feature is not available in Google Chrome or Chromium web browsers due to limitations of Chrome extension manifest version 3.Apple's choice to support content blockers and web extensions but not app extensions in Safari web apps creates frustration among users.