Which file types does Flatten PDF Forms accept?

The drop area takes PDF. Files are read from your device in the browser, so the format has to be one a browser can decode — that is why the accepted list on this page is finite and honest rather than "everything".

What do I get back from Flatten PDF Forms?

The result is PDF, offered as a download the moment the work finishes. Multiple results come back together rather than as fifty separate save dialogs.

How big a file can I use?

Up to 100 MB per file and 50 files per batch. There is no server queue behind that limit; the practical ceiling is your browser's memory, so split unusually large documents into two runs.

Where does the processing actually happen?

In this tab. The file is read locally, converted or edited locally, and handed back as a download — no copy is sent to a server, so there is nothing for anyone to breach or keep.

Flatten PDF Forms

Turn interactive form fields into static content.

Drag & drop your PDF here

or click to browse — .pdf · up to 1 files

Form field values and annotations are merged into the page content — the output looks identical but is no longer interactive.

Add a PDF first.

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About Flatten PDF Forms

Flatten PDF Forms is here for making form fields and annotations part of the page itself: turn interactive form fields into static content. It takes PDF and produces PDF. Files up to 100 MB each, 50 at a time, and the work happens on your own machine rather than on a server.

Handy on a phone, where Flatten PDF Forms beats searching the app store for a one-job utility.

How to use Flatten PDF Forms in 3 steps

Drop the file on the page — PDF, one file up to 100 MB.
There is nothing to configure for Flatten PDF Forms — the form values are baked into the page content.
Press Flatten PDF and download the PDF result.

What you get with Flatten PDF Forms

Nothing to configure — drop the file and press the button
Runs in your browser — the file is never uploaded
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

Flatten PDF Forms: questions

Which file types does Flatten PDF Forms accept?: The drop area takes PDF. Files are read from your device in the browser, so the format has to be one a browser can decode — that is why the accepted list on this page is finite and honest rather than "everything".
What do I get back from Flatten PDF Forms?: The result is PDF, offered as a download the moment the work finishes. Multiple results come back together rather than as fifty separate save dialogs.
How big a file can I use?: Up to 100 MB per file and 50 files per batch. There is no server queue behind that limit; the practical ceiling is your browser's memory, so split unusually large documents into two runs.
Where does the processing actually happen?: In this tab. The file is read locally, converted or edited locally, and handed back as a download — no copy is sent to a server, so there is nothing for anyone to breach or keep.