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Drop pdf file here or
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Bake form fields, comments and annotations permanently into the pages — nobody can change or delete them afterwards.
Select your PDF — drag it into the tool or click Select PDF to browse.
Start flattening. Form fields, stamps and annotations become part of the page.
Check the result — the document should look identical, just no longer editable.
Download the flattened PDF for sharing or archiving.
Built for speed, privacy and reliability — on any device.
Form entries, stamps and comments are fused into the page — no accidental changes possible.
The document renders exactly the same; only the editability disappears.
Flattening runs locally — signed forms never reach a server.
Send completed applications and signed papers knowing nothing can be altered.
No account, no watermark, no daily cap.
Add the PDF to the tool above and run the flatten. The permanently merged copy downloads instantly — free, no account.
A PDF stores form fields and annotations as separate layers on top of the page. Flattening fuses them into the page content itself, so they become ordinary ink — visible but not editable.
Before submitting finalized forms, sharing signed documents, or archiving anything that must not change. Some systems ask for flattened files because they can't handle layered fields.
No — that's the point. Keep your original file with the live form fields if you ever need to edit again.
No. The pages render identically; the difference is only in what's underneath.
No. The flattening runs entirely in your browser, so the document never leaves your device.
Flatten a PDF — lock fields & annotations, free