Processed on your device — never uploaded
Flatten a PDF
Lock forms & fields into plain content
Drop a file here, or browse
.pdf — processed on your device, never uploaded
How it works
- 1
Drop the PDF with forms or fields.
- 2
We bake every field into static page content.
- 3
Download the flattened, non-editable copy.
Why FoldPDF
- Files processed 100% locally — verifiable in DevTools
- No file size or daily usage limits
- No watermarks, no accounts, no paywalls
- Works offline once loaded
Frequently asked questions
Is this flatten pdf tool really free?+
Yes — every FoldPDF tool is free with no file limits, watermarks, or sign-up. Processing runs on your own device, so it costs us nothing to serve.
Are my files uploaded to a server?+
No. Files are processed entirely inside your browser using WebAssembly. You can verify with your browser's developer tools that no file data is transmitted.
How does flatten pdf work?+
Turn interactive form fields, checkboxes and signatures into ordinary page content so they can't be edited or re-filled by the next person.