Flatten PDF
Lock filled form fields into the page so they display the same everywhere and cannot be edited.
How to flatten a PDF
- 1
Add your PDF
Drop or select the filled form you want to flatten.
- 2
Flatten
The form fields are merged into the page content.
- 3
Download
Get a flattened PDF, processed on your device.
Why flatten PDFs in your browser?
Completed forms are often sensitive, applications, contracts, financial documents. Flattening them locally finalizes the values without uploading the document to an online editor.
Frequently asked questions
What does flattening do?+
It merges interactive form fields into the page so the values are visible everywhere and can no longer be edited or cleared.
Is my file uploaded?+
No. Flattening runs in your browser, so your PDF never leaves your device.
Why flatten before sending?+
It guarantees the recipient sees exactly the values you entered, and stops them being accidentally changed.
What if the PDF has no form fields?+
It is simply re-saved unchanged, nothing to flatten.
Does it work offline?+
Yes. After the first visit it keeps working with no connection, because all processing is local.