Image Comparison

Compare Two Images Online

Use our free image compare viewer to compare two images for differences and similarities. Upload your before and after photos to spot changes instantly.

Before
After
Upload both images to start comparing
Drag the slider to compare

Why Use an Image Compare Viewer?

Whether you are a photographer reviewing retouched photos, a designer checking revisions, or a QA tester verifying UI updates, you often need to compare two images for differences. Looking at two pictures side-by-side in separate tabs makes it nearly impossible to spot subtle changes. Our image compare viewer solves this by overlaying the two images perfectly on top of each other.

By using an interactive before-and-after drag slider, you can seamlessly wipe between the two photos. This makes it incredibly easy to compare two images for similarity or spot exact pixel edits. Because our tool runs entirely in your browser, you can safely compare images online for free without uploading sensitive client work or personal photos to a remote server.

How to Compare Two Images Online

  1. Upload the Before Image: Click the "Upload Before" button and select the original or unedited photo from your device.
  2. Upload the After Image: Click the "Upload After" button and select the modified or second photo you want to compare.
  3. Drag the Slider: Click and drag the slider handle left and right. This will reveal the underlying image, allowing you to spot differences instantly.
  4. Swap or Download: Use the "Swap" button to flip the layer order, or click "Download" to save a combined image of your comparison.

Frequently Asked Questions

To compare two images for differences, upload your "Before" and "After" photos into our image compare viewer. Use the interactive drag slider to swipe left and right, allowing you to instantly spot edits, changes, or discrepancies between the two pictures.
Yes. By placing two similar images side-by-side using our slider tool, you can easily verify if they are identical or find subtle variations. Because the tool overlays the images perfectly, even the slightest pixel differences become visible.
Yes, our image compare viewer is 100% free. There are no hidden fees, signups, or watermarks. All image processing happens locally in your browser, ensuring your photos remain completely private and are never uploaded to a server.