LocalDiff Desk
Images stay in this browser

Local canvas

Drop two images to start

Use the Before and After drop zones. Nothing leaves this device.

Fast visual review

Compare images privately without storing your files.

For design review

Compare mockups, thumbnails, detail pages, and before/after edits without sending or saving your assets.

For screenshot QA

Use strict thresholds to catch UI shifts, missing components, color changes, and visual regression noise.

For product images

Review retouched catalog photos and ad creatives with a clear diff mask and exportable comparison view.

Image comparison FAQ

Are images uploaded or stored?

No. Files are decoded and compared through browser APIs on your machine. They are not uploaded, logged, or saved.

What happens when I close the tab?

The comparison disappears with the browser session. There is no account history, server copy, or saved project.

Can I export without saving data online?

Yes. Export creates a local PNG in your browser only when you click the download button.