Skip to content
ToolsOnDuty - free online tools
PDF Tools

PDF Form Filler

Fill interactive PDF form fields and save an editable or flattened copy.

Free foreverRuns in your browserNo sign-up
Drop a PDF here, or click to choose
Processed locally in your browser.

About the PDF Form Filler

PDF Form Filler detects interactive AcroForm fields, shows their current values and lets you complete them without installing a desktop PDF editor.

Save an editable copy when another person still needs to change the form, or flatten it to lock the field appearances into the document for sharing.

Key features

  • Detect AcroForm fields
  • Fill text and checkbox fields
  • Editable or flattened output
  • No server upload

How to use

  1. 1Upload an interactive PDF form.
  2. 2Complete the detected fields.
  3. 3Save an editable copy or save and flatten it.

Examples

Complete an application
Input: AcroForm PDF with text fields and checkboxes
Output: Filled editable or flattened PDF

Choose flattened output when the completed values should no longer be changed.

Frequently asked questions

Why are no fields shown?
Some PDFs only look like forms but contain no interactive AcroForm fields. They must be annotated manually.
What does flatten mean?
Flattening fixes field appearances into the pages so recipients cannot edit the original form controls.
Are signatures supported?
Use Sign PDF for a drawn or typed signature. This tool focuses on standard form fields.