Flatten PDF
After flattening, filled fields become permanent page content that no one can edit or clear.
Local processingAccepts PDFUp to 100 MB
Drop your file here
PDF · up to 100 MB each · you can also paste from the clipboard
Nothing is processed until you press the button below.
What it will not do
- Only interactive form fields are flattened. Annotations added by other tools may remain separate objects.
Where this runs
Flatten PDF runs entirely inside this page. Your file is read by the browser, processed in memory and handed back to your downloads folder. It is never sent to a server, because there is no server involved in this tool.
Read the full processing model →