MergeMintHub

Guides / Image Compare

How to Compare Two Images Side by Side

3 min read · Updated October 2026

After compressing a photo, editing a design or upscaling, you want to see what really changed. A slider shows both pictures in the same place.

Try it now: Image Compare

Free, no sign up, and the file stays on your device.

Open Image Compare

How to compare

  • Open Image Compare and add the Before picture.
  • Add the After picture.
  • Move the slider left and right.
  • Zoom your browser to look closely at details.

Best results

  • Use two pictures of the same size so they line up.
  • Compare an original with a compressed copy to check quality.
  • Use it to show clients a retouch result.

Frequently asked questions

Is my file uploaded?

No. The work happens in your browser, so your file stays on your device.

Ready to start?

Open Image Compare