WebsiteScreenshot.org
Screenshot Comparison Tool
Compare two local screenshots with a slider, overlay and downloadable pixel difference image.
Upload PNG, JPEG or WebP images up to 20 MiB and 24 megapixels each.
Your uploaded images are processed locally in this browser.
Choose two images to compare.
Make the page useful beyond your browser
Find visual changes between two saved screenshots. Side-by-side viewing shows the context, while an overlay or slider helps you locate movement.
Pixel differences show changed colours, not the meaning of a change. Fonts, antialiasing and animation can create visible differences even when the layout is intentional.
Both selected images are processed locally in your browser. When dimensions differ, choose an alignment and read the sizing note; stretching an image would make pixel comparisons misleading.
How to use it
- Choose a reference screenshot and a second image.
- Select alignment, comparison view and difference threshold.
- Inspect the changes and download the difference image.
FAQ
Does a difference mean a bug?
No. It identifies changed pixels; use the original images and context to decide whether the change is a problem.
Can I compare two URLs automatically?
This page compares two local image files. Capture the pages separately first.