How to flatten a PDF
Flatten a filled in form before you send it, so the answers can't be changed and look the same in every reader.
- About 1 minute
- Free, nothing uploaded
- 4 steps
Steps
Add your PDF
Drag your PDF onto the box, or click Choose a file. It opens right in your browser. Nothing is uploaded.
Choose what to flatten
Everything flattens form fields, comments, and markup. Form fields only leaves comments editable.
Click Flatten PDF
Each field and comment is drawn into the page exactly as it looks, then the editable layer is removed.
Download the result
Click Download to save the flattened PDF. The original file is left exactly as it was.
The options, explained
- Everything
- Form fields, check boxes, comments, highlights, and stamps all become part of the page. Links stay clickable.
- Form fields only
- Only the form is locked. Comments and markup can still be edited or deleted.
Tips
- Fill in the form completely first. Once it's flattened, the fields can't be filled in anymore.
- Keep the original if you might need to change an answer later.
Questions
Will the PDF look different?
No. Every field and comment is drawn exactly where it was. Only the ability to edit them is gone.
Do links still work?
Yes. Links are kept and stay clickable.
Ready? Flatten PDF is free.
Lock forms and comments in place. Works in your browser, no sign up.