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Fill a PDF form

Fill in a PDF form's fields right on the page: text, checkboxes, choices and lists, then save or flatten it. No upload.

  • Free
  • No sign-up
  • No file uploaded
  • Windows, Mac, Android, iPhone

Your files stay on your device: nothing is uploaded.

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About this tool

An official form, a registration sheet or an application received as a PDF? Drop the file: the fields appear outlined on each page, you type in them, tick the boxes, pick from the lists, then save the filled PDF.

When to use it

Official form

Fill in an application or declaration neatly, without printing it to write by hand.

Registration or application

Complete a registration form, an information sheet or a file.

Document to send back

Flatten the form so the answers display the same everywhere.

How to use

  1. Drop the PDF form.
  2. Fill in the outlined fields on each page.
  3. Tick “Flatten” if the answers shouldn't change.
  4. Save the filled PDF.

How it works

The tool reads the form fields (text, checkboxes, radio buttons, lists) with the pdf-lib library and places them over each page image, rendered by pdf.js. Existing values are kept.

When you save, the answers are written into the PDF's fields; “Flatten” turns them into permanent text. Everything happens in your browser: the form is never uploaded.

Tips for best results

  • Leave fields unflattened if someone else still needs to complete the document.
  • Flatten before sending a final form.
  • To add a handwritten signature, then use “Sign a PDF”.
  • For a PDF without fields, write on it with “Sign a PDF”.

Common problems and fixes

No field is found

The PDF isn't an interactive form: add text with “Sign a PDF”.

The XFA form isn't read

Adobe LiveCycle XFA forms only open in Adobe Acrobat Reader.

A character displays badly

The PDF's standard fonts don't cover every alphabet: check the result in your PDF reader.

Frequently asked questions

Is my form uploaded?

No, it's filled in your browser.

What does “flatten” mean?

The answers become fixed text: the form can no longer be edited.

Can I sign the form?

Yes, save it and then open “Sign a PDF”.

Are calculated fields updated?

No, the PDF's scripts (automatic totals) aren't run.

Related searches

Still stuck?

Ask on the forum: the category, the tool, your device sheet and the test result will be filled in for you.