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.
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It is pretty easy to create Dropbox integrated forms with us. You will need to create a form (or just clone one - Upload Forms), and then integrate it with the Dropbox service.
By default we allow jpg, jpeg, png, gif image formats on Upload Fields, but you can adjust the allowed extensions.
Also, you might want to change our default 1MB max file size limit.
If you need any further assistance, please let us know. We will be happy to help.