Image Compare

Before/after slider to inspect two images — resized to match automatically.

Tool Media & Files Updated Apr 19, 2026
How to Use
  1. Drop two images (before and after).
  2. Drag the slider to reveal.
  3. They auto-resize to same bounds.
Images
A
Drop "Before"
B
Drop "After"
Slider compare

Notes

Split
Vertical cut
Fit
Same bounds
No diff
Use Image Diff for pixel compare
Preserved
Aspect of each
Output
Preview only
Privacy
Local

About the Image Compare

The Image Compare is a free tool for image, audio and file tasks. It runs right in your web browser, so there is nothing to download. Before/after slider to inspect two images — resized to match automatically.

How it works

Enter what you have and read the result as it updates live. It all runs on your own device, so it is quick and private, with nothing to install.

Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.

Frequently Asked Questions

Different sizes?

Both scaled to fit a shared bounding box (same height).

How do I use the Image Compare?

Simply type your numbers and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.

Is it free? Does it work without internet?

Yes to both. It is free with no sign-up, and once the page has loaded it keeps working even with no internet.

Where does my data go?

Nowhere — every calculation runs on your own device. Nothing you enter is uploaded, logged, or stored.

Common Use Cases

Retouch review

Before/after edits.

Compression

Check artifacts.

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