Flatten PDF
Flattening merges interactive form fields, signatures and annotations into the page content. The result looks identical everywhere and can no longer be edited.
⚡ Encrypted server · auto-deleted after download
Select your file
or drag & drop a file here
⚡ Processed on our secure server over an encrypted connection and deleted right after download.
How to flatten pdf
- 1
Select the PDF you want to flatten.
- 2
Click Flatten PDF.
- 3
Download the flattened, locked-in PDF.
Frequently asked questions
What does it mean to flatten a PDF?
Flattening converts interactive layers (form fields, signatures, comments) into static page content. The look stays the same, but the elements can no longer be edited or filled.
Why flatten a PDF before sending it?
Flattening stops form data from being changed and makes the file render the same in every reader. It is common before archiving or sharing a final document.
Does flattening reduce file size?
Often slightly, because interactive structures are simplified. The main goal is locking the appearance, not compression. Use Compress PDF to shrink size.
Will my filled form values stay visible?
Yes. Filled values are kept and drawn permanently into the page. They simply stop being editable fields afterward.
Is it free?
Yes, flattening is free with no watermark. The file is processed on a secure server and deleted right after your download.
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