Contact
Questions, a conversion that did not work, or an idea for a new tool: we would like to hear it.
Message on WhatsApp
The quickest way to reach the developer, Usman Hussnain, is WhatsApp:
Reporting a problem
Please tell us the tool you used, your browser and device, the file type and roughly how large it was, and the message you saw. Please do not send private files. If a file is needed to reproduce a problem, make a test file that contains nothing personal.