Flatten PDF
Lock form fields and annotations into the page.
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🔒 Your files are processed in your browser and never uploaded.
How to use Flatten PDF
- Choose a fillable PDF form.
- Type into the fields, or flatten the form to lock it.
- Download the completed PDF.
Tip: Flatten the form before sending so nobody can change your answers.
Frequently asked questions
Is Flatten PDF free?
Yes. All tools on this site are free to use, with no sign-up.
Are my files uploaded?
No. The tool runs inside your browser, so your files stay on your phone or computer and are never sent to our server.
Does it work on mobile?
Yes. It works in Chrome, Safari and other modern browsers on Android, iPhone and computers.
Tool by Adithya Info Hub · Report a problem