Technology · Web technology
Use browser developer tools
Inspect layout, network requests and browser errors.
8 min read · Practical troubleshooting
- Open Developer Tools with F12 or the browser menu, then use the Elements panel to inspect HTML and CSS.
- Use the Console to read JavaScript errors, but never paste commands you do not understand.
- Reload with the Network panel open to identify failed files, slow requests and response codes.
- Use responsive mode to check common screen widths, keyboard focus and touch-sized controls.
Follow the official instructions for your device or service. Back up important data before changing settings or attempting repairs.