Browser DevTools
You might say
Clicking Save does not update the page. Use browser developer tools to find the evidence instead of guessing from the screen.
Browser DevTools are built-in tools for inspecting page structure, styles, errors, requests, and storage state.For example, when Save does not update the page, use Elements for nodes and styles, Console for script errors, Network for request status and responses, and Storage for browser data such as cookies. DevTools provides evidence and temporary edits; it does not replace server logs, permission checks, or a real code fix.
Also calledDevTools
Further reading