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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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    File upload knowing size in advance

    Asked by sunangst on December 30, 2010 at 03:44 PM

    Is there any way to tell a user that a file is too big before they start the upload?  Also, what is the error message they would get if they do exceed the file size?



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    JotForm Founder

    Answered by aytekin on January 01, 2011 at 11:56 PM

    It is not possible on all browsers, but on some browsers that support HTML 5, we do show an error message before uploading the file:

    If they exceed maximum file size, they get an error message like this: