Flatten PDF — Lock Content as Images
Convert a PDF into non-editable image pages so signatures, stamps, and form data can't be lifted out. Free.
🔒 Files are processed on your device — nothing is ever uploaded to a server
After signing or filling a document, flattening merges everything into the page itself — recipients can read and print it, but can't extract your signature or edit fields.
How it works
- Open the signed/filled PDF.
- Click Flatten — every page becomes a locked image.
- Download and share safely.
Why MyPDF
- Truly private — Everything runs inside your browser. Your files are never uploaded, stored, or seen by anyone — unlike most online PDF sites.
- Free with no sign-up — No account, no daily limits on core tools, no watermarks added to your files.
- Fast — No upload/download round-trip to a server. Large files start processing instantly.
- Works everywhere — Any modern browser on Windows, Mac, Linux, Android, or iPhone. Installable as an app (PWA).
FAQ
Can a flattened PDF be un-flattened?
No — content becomes part of the page image, which is exactly the point.
Is it safe for confidential documents?
Yes. Processing happens locally in your browser (client-side). You can even disconnect from the internet after the page loads and most tools keep working.