Flatten a PDF
Lock filled-in forms and comments into the page before you send them. Nothing is uploaded.
- Your files are never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Drop your PDF files here
PDF files · up to 10 files, 500 MB each
or paste with Ctrl+VLive preview
Settings
How it works
Add your PDF
A filled form or a commented document.
Choose what to flatten
Forms, comments or both.
Download
Fields can no longer be changed.
Why flatten?
Filled form fields can look different, or be changed, in other PDF readers. Flattening draws the answers and comments into the page, so everyone sees the same thing and the values are no longer editable.
Private
Your file is processed inside your browser with the open-source pdf-lib library. It is never uploaded, and nothing is saved after you close the page.
Questions
Are my files uploaded?
No. The tool runs inside your browser, so your files are opened and changed on your own device. They are never sent to us or to anyone else.
Can I fill the form again later?
No. After flattening, the fields are part of the page. Keep your original file if you may need to change it.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
Related tools
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