Flatten PDF
Merge form fields, comments and markup into the page so they can't be changed — or flatten every page to an image.
Drop a PDF to flatten it
or browse from your device — it opens in the editor right away
- 1Drop your PDF
- 2Choose what to flatten
- 3Download the flattened PDF
Flatten PDF files online — fast and private
Our PDF flattener makes a document final. Flattening forms and comments paints filled-in fields, highlights, notes, stamps and drawings straight into the page and removes the interactive objects, so nothing can be changed — while your text stays sharp, searchable and copyable. Need to lock everything? Flatten to images redraws each page as a single picture at the quality you choose, including anything you added in the editor.
Two ways to flatten
Smart flatten keeps text selectable; flatten to image locks every layer.
Fields and comments locked in
Form values and markup become part of the page and can't be edited.
Private by design
Files travel over an encrypted connection and stay private to you.
Frequently asked questions
Flattening merges interactive elements — form fields, comments, highlights, stamps and drawings — into the page itself. They look exactly the same, but they are no longer separate objects, so they can't be edited, cleared or moved.