Is there a way to upload larger files?

The upload function in the form does not allow for files much bigger than 1MB. Is there any way to upload documents greater than this size like 10-20mb?

The file upload field's default max file size limit is 1MB. However, you can change it in your field upload field settings.

Here's how:

Full guide: https://www.jotform.com/help/33-Changing-the-upload-size-limit