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Fill PDF Forms Online — Free PDF Form Filler

Fill in text fields, checkboxes, radio buttons and dropdowns of any fillable PDF form and download it — optionally flattened. Free and private.

Choose files

or drag and dropPDF

  • Highlight fields
  • Flatten form on download
  • Add text
  • Signature
  • Insert date

Your files never leave your device — everything runs locally in your browser.

Continue with another tool

How it works

  1. 1

    Open the form

    Upload a PDF form. Fillable fields are highlighted in light blue.

  2. 2

    Fill it in

    Click into the fields or use the Tab key: text fields, checkboxes, options and dropdowns.

  3. 3

    Add missing parts

    Where a field is missing, simply add free text or your signature.

  4. 4

    Save

    Download the filled PDF — optionally flattened so the values can no longer be changed.

Typical uses

  • Complete applications, tax forms and official forms on your computer.
  • Fill in registration sheets, questionnaires and order forms without a printer.
  • Fill recurring forms neatly and legibly.

Tips

  • Accented letters and special characters are embedded correctly.
  • Flatten the form before sending so recipients can’t change values by accident.
  • Form not fillable? Use the PDF editor and “Add text”.

Lightning Fast

All processing happens instantly in your browser — no server uploads needed.

100% Private

Your files never leave your device. Everything is processed locally.

Free Forever

No sign-up, no watermarks, no file limits. Completely free to use.

98 Languages

Available in 98 languages worldwide.

Frequently Asked Questions

Which PDF forms can I fill?

Any PDF with fillable form fields (AcroForm): text fields, checkboxes, radio buttons and dropdowns. For non-fillable PDFs, simply add text anywhere.

What does "flatten" mean?

Flattening turns the filled fields into regular page content so the values can no longer be changed.

Is my data safe?

Yes. Your form data is processed only in your browser.