Flatten PDF Online — Make Form Fields Permanent & Non-Editable
Lock filled form fields and checkboxes into permanent page content.
Runs in your browser · 100% Private (No upload)
Files stay on your device.
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FAQ
Flatten PDF Forms — frequently asked questions
What does flattening a PDF do?
It turns filled-in form fields and checkboxes into fixed page content, so nobody can edit them afterwards. It is useful before sharing or printing a completed form.
Does it flatten comments and annotations too?
This tool flattens form fields. Comments and markup annotations are not converted, so use a print-to-PDF step if you need those flattened as well.
Are my files uploaded or stored anywhere?
No. Flatten PDF Forms runs in your browser, so your files stay on your device and are never sent to our servers or saved anywhere.
Is Flatten PDF Forms really free? Do I need to sign up?
Yes, it is completely free. There is no account, signup, watermark or email to hand over; open the page and use it as often as you like.
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