Flatten PDF
Flatten form fields, annotations and comments in a PDF so they cannot be edited, in your browser.
Drop a file here, or click to chooseYou can also click this area and paste a copied file.
Processed in your browser. Your file is never uploaded.
About this tool
Lock in the content of a PDF. Flatten form fields so the filled-in values become part of the page, or flatten everything including comments and annotations by turning pages into images. Useful before sending a form back. Your file stays in your browser.
How to use it
- Choose a PDF file.
- Choose whether to flatten form fields or everything.
- Click Flatten PDF and download the result.
Frequently asked questions
Is my PDF uploaded?
No. The file is processed locally in your browser.
What is the difference between the two modes?
Form fields mode keeps text selectable. Everything mode renders each page to an image, which also bakes in comments and highlights but removes selectable text.
Can I undo flattening?
No. Keep the original if you may need to edit the form again.