YOUR IMAGES. ON YOUR DEVICE.

Image Compare

Compare two images online with a before-and-after slider, side-by-side view and shared zoom. See dimensions and file sizes, with no image uploads.

Choose your image to begin.

Ready when you are.

GET THE RESULT YOU NEED

Use Image Compare in your browser

Fit two decoded images into equal preview frames to inspect edits or compression visually.

Choose Image A and Image B in JPG, PNG or WebP format.
Use the reveal slider or side-by-side mode, then magnify the preview and scroll to inspect the same area.
Compare dimensions and file sizes. Optionally download a PNG of the comparison view.

What to expect

Each input is limited to 20 MB and 8 megapixels. Images with different dimensions are fitted with padding; the tool does not align subjects automatically. Shared zoom magnifies the preview rather than showing every original pixel.

Are my images uploaded?

No. Image processing takes place on your device. Download your results before leaving the page.

Does this preserve the original?

The original file is unchanged. Downloads are new files and do not copy source metadata.

HOW IT WORKS

How Image Compare works

Fit two decoded images into equal preview frames to inspect edits or compression visually.

Decode both files

The browser decodes each selected image locally. The tool reports the source dimensions and file sizes in decimal KB.

Render the comparison

Each image is fitted into an equal frame without stretching. Slider mode clips the right-hand image at the selected reveal position; side-by-side mode draws both frames next to each other.

Zoom and export

Zoom changes the displayed size of the combined preview, so scrolling pans both images together. PNG export saves the current comparison at preview resolution, without copying source metadata.

Explore the details: Browser encoding Image formats — MDN