JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Yes, we do have forms that can be used to upload file attachments from your customers. Here's a template form that you can check out and use for collecting file attachments. https://www.jotform.com/form-templates/send-your-files-form
You can also create one from scratch by following this guide: How to create upload forms.
However, please note that Free accounts have a total of 100MB available space for uploaded files. This means you cannot collect larger files that exceed that limit.
If you need further assistance, please let us know.