Open the PDF in a PDF editor that supports form creation
Add text fields, checkboxes, radio buttons, dropdowns, or signature fields where needed
Set field properties such as name, size, font, and required status
Align and format the fields to match the document layout
Save the file as a fillable PDF
Test the form by opening it in a PDF reader and entering sample data
Use Adobe Acrobat Pro, Foxit PDF Editor, Nitro PDF, or similar tools
If starting from a scanned document, run OCR before adding form fields
Export or save the completed form with form functionality preserved