Yes, with no watermark and no page limit.

Does it need an account?

No. There is no account system.

Is my file processed on my device?

Yes. The file is read by your browser and never uploaded. There is no server to send it to.

What formats are supported?

PDF with form fields in, PDF out with the values drawn in and the fields gone.

Needs a PDF that actually has form fields; one without is refused rather than returned unchanged. Flattening cannot be undone.

Does it work on mobile?

Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.

Does it work offline?

Yes, once the page has loaded. The tool keeps working with no network connection.

What does flattening a PDF actually mean?

A filled form stores your answers in editable field objects that sit on top of the page. Flattening draws those answers into the page and deletes the fields, so the result is one ordinary document. The words look identical; the difference is that they can no longer be clicked into and changed.

So the recipient cannot alter what you sent, and so it renders the same everywhere. Editable fields are drawn by the reader, and readers disagree, which is why a form can look right on your machine and empty on theirs. Flattened text is just text.

No. The fields are gone. Keep the unflattened original if there is any chance you will need to change an answer.

Does it flatten annotations and highlights too?

It flattens form fields. Comments, highlights and sticky notes are annotations rather than fields and are left as they are.

Drop a PDF form hereor choose a file from this deviceChoose filePDF with form fields · never uploaded

PDF FORM -> LOCKED · Local tool

Flatten PDF

Lock a filled PDF form so nobody can change the answers.

Last updated 3 September 2026

01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Your downloads
the result arrives here

How it works / no cloud

A conversion engine, not an upload form.

filetity draws each field's current value into the page itself and then removes the field, so what was an editable box becomes ordinary page content. Appearances are rebuilt first, so a value that a previous filler stored without drawing still comes through. Pages, size and rotation are untouched.

Offline ready
Installable app
No file limit queue

Straight answers

No accordion. Nothing hidden.

Is it free?: Yes, with no watermark and no page limit.
Does it need an account?: No. There is no account system.
Is my file processed on my device?: Yes. The file is read by your browser and never uploaded. There is no server to send it to.
What formats are supported?: PDF with form fields in, PDF out with the values drawn in and the fields gone.
What are the limits?: Needs a PDF that actually has form fields; one without is refused rather than returned unchanged. Flattening cannot be undone.
Does it work on mobile?: Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
Does it work offline?: Yes, once the page has loaded. The tool keeps working with no network connection.
What does flattening a PDF actually mean?: A filled form stores your answers in editable field objects that sit on top of the page. Flattening draws those answers into the page and deletes the fields, so the result is one ordinary document. The words look identical; the difference is that they can no longer be clicked into and changed.
Why would I want to?: So the recipient cannot alter what you sent, and so it renders the same everywhere. Editable fields are drawn by the reader, and readers disagree, which is why a form can look right on your machine and empty on theirs. Flattened text is just text.
Can I undo it?: No. The fields are gone. Keep the unflattened original if there is any chance you will need to change an answer.
Does it flatten annotations and highlights too?: It flattens form fields. Comments, highlights and sticky notes are annotations rather than fields and are left as they are.

Keep working locally

4 available · more coming