Free Screen Change Detector

Compare two screenshots and instantly see what changed. Highlight differences between before and after images. Perfect for monitoring visual changes, testing, and QA.

How to use:

  1. Upload your "before" screenshot
  2. Upload your "after" screenshot
  3. Click "Compare Screenshots" to see differences
  4. Red areas highlight what changed between the images

Frequently Asked Questions

How do I compare two screenshots to find differences?

Upload both screenshots using our free screen change detector tool above. The tool will automatically compare the images and highlight all differences with visual indicators. You can see side-by-side comparison and a diff view showing exactly what changed.

Is this screen change detector free?

Yes, our screen change detector is completely free with no signup required. Compare unlimited screenshots and find differences instantly at no cost.

What file formats are supported?

Our screen change detector supports common image formats including PNG, JPG, JPEG, and WebP. Both screenshots should be in the same format for best results.

Can I use this for QA testing?

Yes! Our screen change detector is perfect for QA testing, visual regression testing, and monitoring UI changes. Compare before and after screenshots to quickly identify visual differences in your applications.

Automate Screen Change Detection

Stop manually comparing screenshots. Let MonitorSensei automatically monitor your screen and notify you when changes occur.