Place the mouse where you want to put the fill-in form field. Click the "Developer" tab, then select "Design Mode." Then, click the "Content Control" buttons to insert content controls like drop-down menus or a date picker. Click the "Design Mode" button again when you're finished to activate the form.
Select the File tab. Select Save As . In the File Name box, enter a name for the file, if you haven't already. In the Save as type list, select PDF (. If you want to change how the document is optimized, select Change .
Why is my PDF fillable form not editable? If PDF filling form fields not allowed, this could be due to a corrupted document, PDF form filling restriction, and document protection. Additionally, the security restrictions imposed by creators unable users to edit the PDF form with ease.
Make sure that the security settings allow form filling. (See File > Properties > Security.) Make sure that the PDF includes interactive, or fillable, form fields. Sometimes form creators forget to convert their PDFs to interactive forms, or they intentionally design a form you can only fill in by hand.