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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.

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.

  • Profile Image

    Is there an input mask for specific characters?

    Asked by je862 on November 03, 2015 at 10:32 PM
  • Profile Image
    JotForm Support

    Answered by beril on November 04, 2015 at 06:46 AM


    I would be most grateful if you provide us more details about your concern. 

    You can use input mask on text boxes. It's on the top toolbar when you click any text box.

    Use @ symbol to mask letters, # for numbers and * for both.



    It is also available on Phone Number tool under Quick Tools.



    There is also a widget called Masked input.


    I hope this information is useful for you.

    If this doesn't answer your question, please explain further and/or add more details about it so we can assist you properly.

    I look forward to hearing from you 

    Thank you.

  • Profile Image

    Answered by je862 on November 04, 2015 at 01:45 PM
    Can you restrict the input to either “M” or “F” for Gender? An input mask of “@” would allow any alpha character to be inserted. Another option, if available, would be a drip down menu of “M” or “F”.


    Jim Erickson
    Cell 214 762-5813
    Fax 214 919-3176

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    JotForm Support

    Answered by Mike on November 04, 2015 at 04:50 PM

    Unfortunately, we cannot allow or restrict specific characters. We would like to recommend to stick with the drop down in this case. Thank you.