Flatten PDF
Bake all form fields and annotations into the page permanently.
Drop a PDF here
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How to flatten a PDF
Drop your PDF into the upload zone. All processing happens in your browser — nothing leaves your device.
The tool merges all layers, annotations, and form fields into a single flat layer. Interactive elements are baked into the page.
Your flat PDF is ready. Forms can no longer be edited, and annotations are permanently embedded — ideal for archiving or sharing.
Frequently asked questions
What does flattening a PDF do?
Flattening merges all interactive layers — form fields, annotations, digital signatures, and transparent layers — into the static page content. The result is a non-editable, universally compatible PDF.
When should I flatten a PDF?
Flatten before sharing final documents to prevent editing of form fields or annotations. Also useful to resolve layer rendering issues in older PDF viewers.
Is flattening reversible?
No. Once flattened, form fields and annotations cannot be restored. Keep a copy of the original if you may need to edit it later.
Is this tool free?
Yes, completely free. No sign-up, no watermarks, no file size limit. Your file never leaves your device.