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 uploader tells "you can only updload the following extensions" even if the extension is correctAsked by TheBackyardPeru on October 21, 2016 at 01:38 PM
I had two cases today of people telling me they couldn't upload an image using a file upload widget even if the extension and size of the file was correct (The message is the one shown in the image).
To correct this issue (the first time) I edited the file extensions allowed by the file uploader to only "jpg, jpeg, png, gif" and saved the form. It was solved, but it appeared again. I edited the form with the intention of just saving it (i.e.: edited some text in an unrelated field) and the problem solved.
Some extra info: I cloned this form from an existing one, it has been working well until today.