discreetpdf.com

Flatten a PDF

Bake filled form fields into the page so their values can't be changed. Open your PDF, then choose Save flattened.

  1. 1.Open your filled PDF form.
  2. 2.Review or finish filling the fields.
  3. 3.Click Save flattened in the toolbar to bake them in.
  4. 4.Download a flat PDF that opens the same everywhere.

Files are processed entirely in your browser. Your file's contents never leave your device.

Your PDF never touches a server. There's nothing here to ration.

No daily caps. No spinner that turns into a paywall after the third file.

Private by architecture

Your PDF never leaves your device.

Unlimited use

No daily caps or hourly throttling. The heavier tools cap files at 100 MB.

No signup, no watermarks

Every tool below works with or without an account.

Works offline

A tool you've already loaded keeps working offline. Tools you haven't opened yet still need the network.

About this tool

Flattening makes the interactive parts of a PDF permanent. A filled form still has live fields, meaning anyone who opens it can change the answers, and some printers render fields inconsistently. Flatten it and the values become ordinary page content: fixed, printable, identical everywhere. When someone says they want to 'lock' or 'finalize' a form before sending it, this is the step they mean.

Drop your PDF and it opens in the editor. If the document has form fields, open Export options (the arrow beside Save) and turn on Flatten form fields. It writes the text fields, checkboxes, radio buttons, and dropdowns into the page and hands you the flat copy. Notes, signatures, and drawings you add in the editor already merge into the page on a normal save. Comments and highlights that arrived inside the file are a separate layer that flattening leaves alone. To delete those, use Remove annotations.

The form and its answers never leave your device, which is worth knowing since filled forms tend to carry names, addresses, and account numbers. Your original file isn't modified. The flattened copy downloads as its own PDF, with no interactive layer left in it.

Frequently asked questions

What does flattening do?
It turns interactive form fields into fixed page content. The values get drawn into the page as regular text and graphics, so nothing can be edited or cleared afterward and the document looks the same in every reader. Existing comments and highlights are not affected. Remove annotations is the tool that deletes those.
How do I flatten my form?
Open the PDF here, fill in or review the fields, then open Export options (the arrow beside Save) and turn on Flatten form fields. The option appears whenever the document has an interactive form. You get a flattened copy, and the original stays as it was.
My PDF has no form fields. Is there anything to flatten?
Probably not. Anything you add in the editor (text, shapes, signatures, watermarks) is already baked in on a normal save. The dedicated flatten step is specifically for making live AcroForm fields permanent.
Will flattening change how the document looks?
No, and that's the point. The values render exactly where they were, same font, same size, just as fixed content instead of live fields. The only thing that changes is that they can't be edited anymore.
Is my form uploaded to flatten it?
Flattening happens on the same local pass that writes your typed values into the page, so nothing about it needs a server. A completed loan application or intake form carrying your name and account number never gets attached to a request; the flattened copy is built and downloaded without ever leaving the tab.

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