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Flatten PDF

Flatten fillable PDF forms, annotations and comments in your browser. Lock the filled-in values into the page. Free, and your file is never uploaded.

Your file stays in your browser.

Shortcuts: Ctrl+Enter run · Ctrl+Shift+C copy result · / search (use ⌘ on Mac)

Next steps

Done here? Use the Send to… menu on the result to carry it on to Watermark PDF or Grayscale PDF.

Free Online Flatten PDF

Lock a PDF so what you filled in or marked cannot be changed. Form answers, stamps and highlights become part of the page. Nothing is uploaded. Turn form fields, stamps, comments and highlights into part of the page so they cannot be edited and look the same in every viewer.

How to flatten a PDF

Drop your PDF in the box and press Flatten PDF. Save the new file when it appears. Only turn on "every page becomes a picture" if the normal result is not what you need.

Common mistakes

  • Flattening before you are finished: after saving, form answers cannot be edited. Keep your original file.
  • Opening a PDF with a password: remove the password first, the tool cannot open it.

Frequently asked questions

Is my PDF uploaded?
No. The file is flattened in your browser and the new PDF is saved to your device.
What does flatten mean?
Form fields you filled in and notes, stamps or highlights added by a PDF reader become part of the page. They look the same but nobody can change them any more.
When should I turn every page into a picture?
When the normal flattening does not give the right result, or when you want nothing editable left. The text can then no longer be selected or searched.
Are links kept?
Yes, when you flatten normally. Links are kept. Turning pages into pictures removes them.
Will flattening make the file bigger?
Flattening forms and notes keeps the size about the same. Turning whole pages into pictures can make the file bigger and means the text can no longer be selected.

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