Flatten PDF
Flatten PDF form fields and annotations into a static document. Prevents form editing.
Drag & drop your PDF here
or click to browse — max 50MB
How to Flatten PDF
- 1Upload your PDF file containing form fields or annotations.
- 2Click "Flatten PDF" to merge all form fields into static content.
- 3Download your flattened PDF — form fields are now permanent and non-editable.
Frequently Asked Questions
What does flattening a PDF do?
Flattening merges all interactive form fields, annotations, and overlays into the static page content, making them permanent and non-editable.
Can I still read filled-in form values after flattening?
Yes. All filled-in values remain visible in the flattened PDF — they just cannot be edited anymore.
Why would I flatten a PDF?
Common reasons include: preventing others from changing filled form data, ensuring the document looks the same across all PDF viewers, and reducing file size.
Is flattening reversible?
No. Once a PDF is flattened, form fields and annotations cannot be recovered. Make sure to keep a backup of the original if needed.
Are my files safe?
Yes. All processing happens entirely in your browser. Your files are never uploaded to any server.
Want a deeper guide? Read our PDF and Image guides →