Flatten PDF turns an interactive PDF form into a static, non-editable document. After you fill in a form, flattening locks the answers in place so nobody can change them by accident.
The fields of the form become part of the page itself, so the file looks the same everywhere and the values can no longer be edited in a PDF viewer. The upload limit is 20 MB.
How to use Flatten PDF
- Fill in your form in a PDF viewer and save it.
- Click the upload field here and choose the filled PDF (up to 20 MB).
- Press Generate and wait a few seconds.
- Download the flattened PDF.
Tips for better results
- Keep an unflattened copy if you may need to edit the answers later.
- Check every field before flattening, because the values cannot be changed afterwards.
- Flattening is useful before you send a form to someone who only needs to read it.
Frequently asked questions
Can I edit the form after flattening?
No. The fields become static, which is the purpose of flattening.
Does it change how the document looks?
It should look the same, but the form fields are no longer clickable.
Does it work on PDFs without forms?
You can run any PDF through it, but the tool is mainly useful for forms.