PDF Tools
Flatten PDF
Flatten form fields and annotations in a PDF, converting interactive elements into static content. The result is a non-editable document — all processed in your browser.
Upload a PDF to flatten its form fields and annotations.
Usage notes
- Flattening makes form fields permanent and non-editable.
- This is useful for archiving completed forms or preventing further changes.
- The visual appearance of fields is preserved, but they can no longer be edited.
Related pages
How to Use This Tool
- 1Upload a PDF file that contains form fields.
- 2Click 'Flatten PDF and Download' to convert all interactive fields to static content.
- 3The downloaded PDF will have all forms locked in place.
Frequently Asked Questions
- What does flattening do?
- Flattening converts interactive form fields (text inputs, checkboxes, dropdowns) into static, non-editable content. The filled values remain visible but can no longer be changed.
- Can I un-flatten a PDF?
- No. Flattening is irreversible. Always keep a copy of the original if you may need to edit the form again.
- Does this work on PDFs without forms?
- If the PDF has no form fields, the tool will inform you. The file doesn't need to be processed.
- Is my file uploaded?
- No. All processing happens in your browser. Your PDF never leaves your device.