Flatten PDF
Make form fields and annotations permanent and uneditable.
Drag & drop files here, or click to choose
.pdf · up to 5 files
Files are sent over encrypted HTTPS, processed on our servers, and permanently deleted within 2 hours.
About this tool
Flatten PDF makes form fields, annotations, and layers permanent — merging them into the page so they can't be edited or accidentally changed. It's the step before sharing a filled form or signed document so it looks and behaves the same everywhere.
How it works
- Choose your .pdf file(s)
- Pick your options
- Download the result
Frequently asked questions
What does flattening a PDF do?
It bakes form fields, annotations, and signatures into the page so they become fixed, uneditable content.
Why would I flatten a PDF?
To lock a filled-in form or a marked-up document so it can't be altered and displays consistently in every viewer.
Will it change how the PDF looks?
No — it looks the same; the difference is that the interactive parts are now permanent.
Is it free and private?
Yes — free, and your file is deleted from our server within 2 hours.