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 ZIP up to 20 MB; 200 entries; 20 MB per expanded file and 50 MB total. Stored/Deflate only. Encrypted, split and ZIP64 archives are unsupported. Filenames receive numeric prefixes. No malware scanning or CRC integrity certification.
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.