Lighthouse Theoretical 1

This site demonstrates common Lighthouse issues and how they're detected.

Performance Issues

This section demonstrates performance problems that Lighthouse will detect.

Accessibility Problems

This text has poor contrast ratio.

Best Practices Issues

SEO Problems

This is another H1 that will hurt SEO

This text is too small for mobile devices.

Click here JavaScript link

PWA Failures

This site is missing essential PWA features like:

Layout Shift Problems

Watch this space...

Resource Loading Issues

Image and Video Issues

Images and videos should be optimized for performance.

Unoptimized Image

Lighthouse Training Resources

After seeing these issues, learn how to fix them at: