Flatten PDF
Make form fields part of the page.
Drop your files here
Choose a file to get started. It stays on your device.
Up to 50 MB per file · 100 MB total
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Flatten PDF: how it works
Make supported AcroForm field values part of a PDF page’s appearance so those fields are no longer interactive.
- 1
Choose a completed PDF form.
- 2
Run Flatten PDF.
- 3
Open the output and verify the field values before sharing.
Before you start: Flattens AcroForm fields; does not flatten every annotation type.
Flatten PDF FAQs
Does flattening make a PDF impossible to edit?
No. This tool flattens AcroForm fields, not every annotation or type of content. Other PDF software may still modify the document.
Are my documents uploaded?
The tools listed here process documents in your browser. Selecting a file does not upload its contents to Filestation. Download your output before closing the page; there is no cloud document library.
Are my PDFs encrypted?
The website uses HTTPS to encrypt the connection. Local processing does not automatically password-encrypt your input or downloaded PDF. No website can guarantee 100% security; use a trusted device and keep your original files.
How do I save a PDF on an iPhone?
After creating the result, use Save / Share and choose Save to Files. If a download opens a preview, use the browser’s Share control to save a copy.