We're here to help

Email Support

For account issues, billing questions, or general enquiries, email us at support@chromozom.com. We typically respond within 1–2 business days.

Technical Issues

If a conversion fails or something does not work, please include the following in your message so we can resolve it quickly:

• Your account email, if you were signed in
• The format you converted from and to, and the file size
• The browser and device you are using
• Any error message you see, and roughly when it happened

Files and Limits

Uploads have a size limit, shown on the converter page, that is higher when you are signed in, and files are deleted an hour after upload, or 24 hours if you are signed in. If a download link has stopped working, that time has passed and you will need to convert the file again.