Image Difference Checker
Visually compare two images online to find differences. Supports side-by-side, overlay, swipe, and onion skin views.
What is an Image Difference Checker?
An Image Difference Checker (or image diff tool) is a visual utility designed to compare two images and highlight the areas where they differ. It's invaluable for designers, developers, QA testers, and anyone who needs to quickly identify visual changes between two versions of an image, graphic, or UI mockup.
Our online Image Difference Checker allows you to upload two images (like PNG, JPG, WebP) and view the comparison using various modes like Side-by-Side, Overlay, Swipe, and Onion Skin. This helps pinpoint subtle changes, regressions, or inconsistencies that might be missed by the naked eye.
Features of Our Image Difference Checker
Explore the features that make our Image Difference Checker versatile and easy to use:
- Side-by-Side View: Compare images placed next to each other.
- Overlay View: Superimpose images with adjustable opacity (fixed at 50% for now).
- Swipe View: Use a slider to reveal one image over the other.
- Onion Skin View: Blend images using an opacity slider.
- Upload Support: Handles common image formats like PNG, JPG/JPEG, GIF, WebP, and BMP.
- Drag & Drop Upload: Easily upload images by dragging them onto the designated areas.
- Save Result: Download the comparison result (Overlay, Swipe, Onion Skin modes) as a PNG file.
- Browser-Based: All comparisons happen directly in your browser for maximum privacy.
How to Use the Image Difference Checker
Comparing images is straightforward:
- Upload your first image (the "Original") using the uploader on the left. You can click to browse or drag & drop the file.
- Upload your second image (the "Modified") using the uploader on the right.
- Once both images are loaded, the comparison controls and result area will appear.
- Select your desired comparison mode: Side-by-Side, Overlay, Swipe, or Onion Skin.
- If using Swipe or Onion Skin mode, adjust the slider to control the view.
- Analyze the differences highlighted by the chosen mode.
- Optionally, click "Save Result" (available for Overlay, Swipe, Onion Skin) to download the comparison view as a PNG image.
Frequently Asked Questions
Are my uploaded images secure?
Yes. Our Image Difference Checker operates entirely within your web browser. Your images are never uploaded to our servers, ensuring your data remains private and secure.
What image file types are supported?
We support common web image formats, including PNG, JPEG (JPG), GIF, WebP, and BMP. If you have issues with a specific format, please let us know.
Is there a limit on image size or dimensions?
While there's no hard limit imposed by the tool itself, performance depends on your browser and computer's memory. Very large images (e.g., high resolution photos or complex graphics) might slow down the comparison or saving process. For best results, try to keep images reasonably sized.
Can I compare images with different dimensions?
Yes. The comparison canvas will resize to accommodate the largest dimensions of the two images. Both images will be centered within the canvas for comparison modes like Overlay, Swipe, and Onion Skin.