Flatten PDF
Flatten form fields and annotations so the PDF looks the same on every device and cannot be filled in or edited afterwards.
Drop a PDF here
or click to choose a file
Accepted: PDF · No upload
How to flatten a PDF
- Add a PDF file.
- Click Flatten PDF.
- Download the flattened version.
The flatten process makes form fields read-only and turns annotation flags into static page content.
Privacy
Runs entirely in your browser.
Known limitations
- Simple form fields and common annotations flatten reliably.
- Complex transparency groups, layers or JavaScript-driven fields may not flatten perfectly.
- Digital signatures become invalid once the file is flattened.