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Free · no upload · no account

Flatten a PDF form

Choose a PDF or drop it here

Processed on this device. Nothing is uploaded.

Short answer

Flattening draws each field's current value onto the page and removes the field itself. The result looks identical and can no longer be edited or accidentally cleared by another reader — which is what you want before sending a completed form on.

Doing more than one thing?

The full editor puts every operation in one workspace with undo, so you are not exporting and re-opening between each step. Same engine, same privacy, still nothing uploaded.

Open the full editor Browse all tools

Why this one does not upload your file

Almost every free flatten a pdf form tool works by sending your document to a server, doing the work there, and sending a result back. That is a cost decision rather than a privacy one — server time costs money, which is why those tools meter you, ask for an account, or cap your file size.

This one runs the same work in your browser using JavaScript, so your file never travels anywhere. There is no upload step, no queue, no account, and no page limit — and the page keeps working if you disconnect from the internet partway through.

You do not have to take that on trust. Open your browser's network tab and watch while you work, or read how it works.

What happens to your file

  • It is read from your disk into this tab's memory
  • Every change happens on your own processor
  • The result is built in memory, reopened and checked before you are offered it
  • Your original file is never modified
  • Closing the tab releases everything — nothing is stored
Questions

Straight answers

Why flatten a form?
Because an unflattened field is still editable by anyone who opens it, and some readers clear fields when they re-save. Flattening fixes the values in place so the document you send is the document they see.
Can it be undone?
Not from the flattened copy. Your original is untouched, so keep it if you may need to change the answers later.
Does this stop the document being edited at all?
No. It fixes the form values. Anyone can still annotate or alter the file with a PDF editor — flattening is not protection, and we will not describe it as such.