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Flatten PDF

Convert form fields, comments and annotations into fixed page content so they can no longer be edited or moved independently.

Drop PDFs here

Add one or more PDF documents to flatten locally in your browser.

Your PDFs are processed locally in your browser and are not uploaded to a server.

How to use Flatten PDF

  1. 1

    Upload the PDF containing interactive form fields, comments or annotations.

  2. 2

    Choose whether to flatten form fields, annotations or both.

  3. 3

    Select all pages or specify the pages on which flattening should be applied.

  4. 4

    Review the detected elements and preview how the flattened document will appear.

  5. 5

    Apply the changes and download the flattened PDF as a new file.

Frequently asked questions

About Flatten PDF

Flatten PDF converts interactive elements into fixed parts of the document pages. Form values, comments, highlights, stamps, drawings and other selected annotations retain their visible appearance but can no longer be edited, moved or removed independently.

Choose whether to flatten form fields, annotations or both, and apply the operation to the entire document or selected pages. The tool updates field appearances before flattening so completed values remain visible consistently when the PDF is opened or printed.

Flattening does not normally turn complete pages into images, and it does not guarantee a smaller file. Interactive links may stop working, while existing digital signatures may become invalid after the document is rewritten.