Fill PDF Forms Online — Free, Private, No Sign Up

Type into the fields of any fillable PDF, tick checkboxes and pick options right on the page, then save it, or flatten it so nobody can change the answers.

Local Processing — No PDF Upload Required
Now on iOS

Quick facts: Fill PDF Forms

Price
Free, no limits
File upload
None. Files are processed in your browser
Account
Not required
Watermark
None
Input
PDF
Output
PDF
Works on
Windows, macOS, Linux, ChromeOS, iPhone, iPad, Android

Privacy Guaranteed

Unlike other tools, we do NOT upload your files to a server. All processing happens in your browser, so your bank statements and private IDs stay on your computer.

Text fields, checkboxes, radio buttons and lists, right on the page.
Save editable, or flatten to lock the answers.
No upload — your answers stay on your device.

How to Fill PDF Forms

  1. Select your PDF form or drag it into the upload area. Its fields light up on the page.
  2. Click a field and type, tick checkboxes, choose radio options and pick from drop-down lists.
  3. Optionally tick "Flatten" to lock the answers into the page.
  4. Click "Save filled PDF" and download the completed form.

About Fill PDF Forms

Fill In Forms Without Printing Them

Applications, tax forms, registrations, contracts: when a PDF has fillable fields you can complete it right here, on screen, and save a clean copy.

Every Kind of Field

  • Text fields, including multi-line boxes and fields with a character limit.
  • Checkboxes and radio buttons.
  • Drop-down lists and list boxes, including ones that allow several choices.

Read-only fields are shown but can't be changed, just as the form's author intended.

Save or Flatten

Save the form with its fields still editable, so you or someone else can change it later, or flatten it to turn your answers into regular page content that can't be edited.

Any Language

You can type in any language. Answers in Hebrew, Arabic, Chinese, Japanese and other scripts are stored in the fields and drawn by your PDF reader. Flattening needs Latin text.

No Fields? No Problem

If your PDF is a scan or was never made fillable, open it in our Edit PDF tool and type wherever you need.

Private by Design

The form is filled inside your browser with pdf-lib. Your answers and your document never leave your device.

Frequently Asked Questions

QHow do I fill out a PDF form for free?

Open PDFMerger.io/fill-pdf-forms, select your PDF, click the highlighted fields and type or choose your answers, then click "Save filled PDF". It is free, with no sign up and no watermark.

QWhat does "flatten" do?

Flattening turns your answers into normal page content and removes the form fields, so the answers can no longer be edited. Leave it off if you or someone else may need to change the form later.

QMy PDF has no fields. Can I still fill it in?

Yes. If the form is a scan or was not made fillable, use our Edit PDF tool to type text anywhere on the page, tick boxes with a shape and add your signature as an image.

QDoes it work with government and XFA forms?

Most government forms are standard fillable PDFs and work as usual. Forms built with Adobe XFA are filled through their standard version; check the result in your PDF reader before sending.

QIs my PDF uploaded?

No. Everything happens in your browser, and your file and answers never leave your device.