Screenshot Beautifier & Device Mockup Generator
Images & design Local only
Visual Regression & Image Diff Checker
Local pixel comparisonCompare screenshots pixel by pixel, ignore reviewed regions and export reproducible evidence locally.
—Canvas
—Changed pixels
—Changed area
—Mean channel delta
0Ignore regions
baseline-sample.pngcurrent-sample.png
How to use it
- 01
Choose two images
Open bounded PNG, JPEG or WebP baseline and current screenshots.
- 02
Tune and review
Use overlay, difference, thresholds and explicit drag-created ignore regions.
- 03
Export evidence
Download a difference PNG, machine-readable JSON or standalone HTML report.
Frequently asked questions
Are screenshots uploaded?
No. Decoding, comparison, masking and reports happen locally.
What does threshold control?
It controls how different two pixels must be before counting as changed.
Do ignore regions alter images?
No. They only exclude reviewed rectangles and are listed in reports.
Does zero difference prove the UI works?
No. Pixel equality does not test interactions, accessibility or content correctness.
Related tools
Keep working with other focused browser utilities.