100% client-side — files never leave your device

Fill out a PDF form

Complete interactive PDF forms — text fields, checkboxes, radio groups and dropdowns — then flatten them so the answers become permanent.

Drop a PDF here to edit itRewrite existing text, reorder pages, fill forms and sign — without uploading the file.

How it works

  1. Open the form. Any interactive fields appear in the right panel with their current values.
  2. Fill it in. Type, tick and select. Read-only fields are shown but disabled.
  3. Flatten and download. Tick flatten so the values are baked in, then export.

Two kinds of PDF form

An interactive form (AcroForm) has real fields the document defines; those show up in the panel automatically, already populated with whatever was saved. A flat form is just a picture of a form — printed boxes with nothing behind them. Most scanned government and bank forms are the second kind.

Filling a flat form

Use Add text and click where the answer belongs, adjusting size to match the printed labels. It takes a minute longer than typing into real fields and the printed result is identical. Add your signature with the Draw tool.

Why you should flatten before sending

Unflattened field values can be edited by the recipient, may render differently across viewers, and occasionally do not print at all. Flattening removes all three risks — the cost is that you can no longer change your answers, so keep the unflattened copy.

Related

Need a signature that looks the same every time? Draw it once, export a PNG, and place it as an image on future documents in the full editor. To combine a completed form with attachments, use Merge PDF.

Frequently asked questions

What if my PDF has no interactive fields?

Many "forms" are just printed lines with no AcroForm behind them. Use the Add text tool to type onto the page wherever you need, and the Draw tool for a signature — the result is indistinguishable in print.

What does flattening do?

It bakes the values into the page content and removes the interactive fields, so nobody can change them afterwards and every viewer shows the same thing. Do it for anything you are submitting.

Why do some fields refuse to change?

They are marked read-only in the document, usually calculated totals or locked identifiers. The editor shows them disabled rather than silently ignoring your input.

Is my filled form uploaded?

No. Forms carry exactly the data you would not want on a stranger’s server — names, addresses, account numbers — and none of it leaves your browser here.

Can I correct a form after flattening it?

Not in the flattened copy: the fields have been removed and their current values baked into the page. Keep the original PDF if you may need to revise the answers later.

Related tools