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Flatten PDF

Make form fields part of the page so they can no longer be edited.

Drop your file here

.pdf

How to use Flatten PDF

  1. 1

    Choose a file (.pdf) or drop it into the box.

  2. 2

    No settings needed: the defaults just work.

  3. 3

    Click “Flatten PDF” and download the result: pdf.

Your documents are processed entirely inside your browser. They are never uploaded to PDF100 or any third party, so Flatten PDF is suitable for confidential files. Read our privacy policy.

Flatten PDF questions

Is Flatten PDF free?

Yes. Flatten PDF on PDF100 is free with no account, no watermark and no daily limit. The site is supported by advertising.

Are my files uploaded when I use Flatten PDF?

No. Flatten PDF runs entirely inside your browser tab. The file is read and processed on your device and the result is saved straight to your downloads, so no copy reaches our servers.

Which files does Flatten PDF accept?

Flatten PDF accepts .pdf. The result is: pdf.

Is there a file size limit?

There is no fixed limit set by PDF100. Because processing happens on your device, the practical limit is your browser memory. Very large files work best on a desktop computer.

Does Flatten PDF work on my phone?

Yes. Flatten PDF works in current versions of Chrome, Safari, Edge and Firefox on desktop and mobile. Large documents are faster on a computer.

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