What if the PDF has no form fields?

The file downloads unchanged — there's nothing to flatten.

Flatten PDF

Flatten PDF converts fillable form fields into static page content, so the values can no longer be edited.

Click to upload a fileor drag and drop

Set a PDF's title, author, and other properties.

Reduce a PDF's file size.

Combine multiple PDF files into one document.

Split a PDF into individual single-page files.