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.
You can convert an online web form to a fillable PDF in the My Forms page. You just have to select the form and then click the "More" button. After that, you need to click the "Create PDF" option.
Here's the link to the user guide: https://www.jotform.com/help/212-How-to-create-a-PDF-form.
A PDF file will be downloaded to your computer. This PDF file is a fillable form. You can now upload that fillable PDF form in your web server. Once the user click the link, they will be redirected to that fillable PDF or it will be downloaded to their computer.
Hope that helps. Thank you.