About Flatten PDF
Flatten form fields and annotations in a PDF to make it non-editable.
How to use Flatten PDF
- 1Sign in, then upload your PDF.
- 2The tool automatically detects fillable form fields.
- 3Click "Flatten PDF" — fields become fixed text, annotations are merged.
- 4Download the flattened PDF.
Tips
- Flatten a filled form before sending to prevent any modification.
- Flattening is irreversible — keep a copy of the original PDF.
- Useful for signed contracts, filled forms or annotated PDFs to freeze.
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OneKitTools TeamUpdated 2.21.4