Image pixel difference checker
Highlight changed pixels with a configurable threshold.
How to use Image pixel difference checker
- Choose a source file. If the tool accepts multiple files, arrange them in the order you want.
- Set difference threshold (0–255).
- Run image pixel difference checker, review the output, then use the available copy or download controls.
What this tool supports
Highlight changed pixels with a configurable threshold.
- Difference threshold (0–255)
- Range: 0 to 255
Limits and processing
Images use the existing 32-megapixel canvas bound. Up to 100 source images are allowed where supported. Pasted HTML is bounded to 200,000 characters; Mermaid diagrams to 20,000 characters and 300 lines. SVG and PNG generation require a browser.
Frequently asked questions
What does image pixel difference checker do?
Highlight changed pixels with a configurable threshold.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Images use the existing 32-megapixel canvas bound. Up to 100 source images are allowed where supported. Pasted HTML is bounded to 200,000 characters; Mermaid diagrams to 20,000 characters and 300 lines. SVG and PNG generation require a browser.