Image Compare — Before & After Slider
Your files never leave your device
1. Before
Drop images here
or click to browse
Supports: JPG, PNG, WebP
Frequently Asked Questions
How does the comparison slider work?
Select two supported images and drag the vertical slider to reveal more of either preview. This is a visual overlay: the tool does not calculate a pixel diff, similarity score, alignment, or image-quality metric.
Do the images need to be the same size?
No, but the first image sets the displayed container ratio and the second is scaled and center-cropped to cover it. Use images with matching dimensions and framing when you need corresponding details to line up.
Can I use this on mobile?
The slider supports pointer and touch input. Behavior still depends on the browser, device, viewport, and accessibility setup, so test the interaction on the devices that matter to you.
What you can do with Image Compare — Before & After Slider
Compare two supported images with an interactive before-and-after slider in your browser. Align their display and inspect visible differences.
Image Compare — Before & After Slider is designed for quick, repeatable work in a modern browser. The controls on this page let you prepare the result without installing software or creating an account.
How to use Image Compare — Before & After Slider
- Select or drop the file you want to process, or enter the information requested by the tool.
- Review the available settings before processing, especially format, dimensions, quality, color, or other details that affect the output.
- Inspect the result, download the new file, and keep the original unchanged in case you need another version.
Private by design
Your files never leave your device. All processing happens locally in your browser.
Tips for better results
- Start with the cleanest source available; a small, blurry, or heavily compressed file contains less detail to preserve.
- Check dimensions and format before downloading so the result matches the site, app, printer, or platform where you will use it.
- For large files, close unnecessary tabs and test one representative file before processing a full batch.
- Open the downloaded result once before sharing it or replacing an original.
Where Image Compare — Before & After Slider fits in a workflow
Use Image Compare — Before & After Slider for one-off adjustments or as a preparation step before publishing, sharing, archiving, or continuing the edit in another application. When batch processing is available, validate the settings on a small sample first and then apply them to the remaining files.