How to use this tool
- Enter your values in the labelled fields or load the worked example.
- Review the assumptions below, then run the tool.
- Review the result, then copy or download it.
Try this example
Accuracy and scope
One image up to 40 MB and 16 megapixels. 1–10 rows and columns. All pixels are retained; edge tiles can differ by one pixel. Does not publish to social platforms.
Is my data uploaded?
This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.