What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
File Upload rejects jpg extensionAsked by geomarkrecovery on June 09, 2015 at 11:41 AM
Help! My form worked fine in testing now I get an invalid extension error when someone tries to upload a jpg file
I believe that I see the issue. On the Extensions entry of each of your Upload Fields, it appears that you have added an accidental space before the jpg extension, so the extension is interpreted as ". jpg" instead of ".jpg". Please try changing it for every one of your Upload Fields so have only a single space.
The entry should be only:
pdf, doc, docx, xls, xlsx, csv, txt, rtf, jpg, jpeg, png, gif
Please let us know if removing that one excess blank space character from your Upload fields' allowed Extensions fixes the issue.
Thanks, that was the problem.