---
title: "Fill and save a PDF form online | Docs Bunny"
description: "Complete existing or detected PDF form fields in your browser and download an updated fillable or flattened file."
canonical: https://docsbunny.com/fill-pdf-form
---

# Fill and save a PDF form online

Complete existing or detected PDF form fields in your browser and download an updated fillable or flattened file.

- Input: PDF form
- Output: completed PDF
- Browser tool: [Open Fill and save a PDF form online](https://docsbunny.com/fill-pdf-form)
- Privacy: Supported processing runs locally after the person selects a file.

## PDF form to completed PDF

Open a fillable PDF or convert a printed form first. Type into text fields, tick checkboxes, add a visual signature, then save a new PDF. The original file is never overwritten.

## Steps

1. **Open the form** — Choose a PDF with existing fields or detect fields with CommonForms.
2. **Fill every field** — Type on the page, check boxes and sign where needed.
3. **Save the updated PDF** — Download a fillable copy you can reopen later, or flatten the completed form.

## Common questions

### Will my answers stay editable?

Save fillable PDF keeps the fields interactive. Save flattened commits the visible answers into the page.

### Are completed forms uploaded?

No. Filling and export run locally in your browser.