UseTool

Fill a PDF form

Fill interactive fields or place text, dates and check marks on a flat PDF. Your file stays in this browser.

Drop one PDF here1 PDF

🔒 Your PDF never leaves your device.

How it works

How it works

  1. 1

    Add what goes in

    Drop your PDF here, or pick it from your device.

  2. 2

    Start it

    Set the form values and field placement, then start. Everything runs in this browser — no upload, no queue, no account.

  3. 3

    Take the result

    The PDF · JSON is ready the moment the run finishes. Save it straight to your device.

What this tool does

What goes in
Reads PDF. One file at a time.
What comes out
You get PDF · JSON.
What happens to quality
The pixels and the text are left alone. Only the structure around them changes.
Where it stops
Password-protected files cannot be opened. Very large files are limited by your device's memory, not by a server quota.
Fill a PDF form
Reads AcroForm fields in page order, preserves read-only values and can flatten the completed form. Flat PDFs accept movable text, dates and check marks; XFA-only files are detected before saving.

Supported formats

PDF → PDFJSON

Good to know

Frequently asked questions

What happens with XFA forms?

If the PDF contains only XFA and no AcroForm fallback, UseTool stops before saving. Browser PDF libraries cannot safely edit XFA; use a compatible desktop reader instead.

What does flattening the form do?

It writes the current field appearances into the PDF pages and removes the interactive fields. The saved copy can be viewed and printed normally, but its fields can no longer be edited.

What files can I use here?

Reads PDF. One file at a time.

What do I get back?

You get PDF · JSON.

Does the file lose quality?

The pixels and the text are left alone. Only the structure around them changes.

When does it not work?

Password-protected files cannot be opened. Very large files are limited by your device's memory, not by a server quota.

Does the text stay searchable?

Yes, and compressing keeps it that way too: by default only the embedded photos are recompressed, while text, fonts and layout stay untouched. Merging, splitting and adding images move the pages as they are. Only the second compression method redraws every page as an image — then the text becomes part of the picture, and the tool says so before you start.

Can password-protected PDFs be opened?

No. A PDF locked with a password cannot be read in the browser, and the tool says so rather than producing an empty document. Remove the protection in the program that created the file first.

Private by design

Your files stay on your device

Your PDF never leaves your device.

Other tools

Ready-made

Workflows for this file type