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How to Fill Out PDF Forms on Your Phone (Free)

By DocFila Team · April 18, 2026 · 5 min read

Tax forms, insurance applications, school enrollment, government paperwork — the world still runs on PDF forms. DocFila lets you fill them out on your phone, sign them, and send them back without ever printing a page. Here's the complete guide.

Two kinds of PDF forms

There are interactive PDF forms (with proper form fields you can tap into) and flat PDF forms (basically images of forms with no fillable fields). DocFila handles both: interactive forms are filled in their own fields, and on a flat form you add text where you need it with the PDF editor.

Fill an interactive PDF form

Open the PDF in DocFila and tap each field to type. Checkboxes and radio buttons toggle on tap. Sign with your saved e-signature if the form needs it, then save and share.

Fill a flat (non-interactive) PDF form

Open the PDF in DocFila and use Edit → Add Text. Tap where you want the text and type. Add a checkmark for tick boxes, add your signature, then save and share.

Fill a form from a saved profile

DocFila's AI Form Filler can fill a form from a profile you save once — personal, business, government, medical or education details. It matches the profile to each field's label, shows the values with a confidence score, and lets you review them before you export. It is a premium tool: the Free plan includes 5 free uses.

Send the completed form anywhere

Once filled and signed, share the PDF via Mail, Messages or Drive, or send it through DocFila's e-sign workflow.

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