Flatten PDF
Lock form fields and annotations into the page.
About Flatten PDF
Filled forms and annotated PDFs can look different, or editable, in other viewers. Flattening bakes the fields, comments and signatures into the pages so what you see is what everyone gets.
- Flatten after filling a form and before emailing it.
- Keep the original if you may need to edit the fields later.
- Signature fields become part of the page image.
How to use it
- 1Drop a PDF with form fields or annotations.
- 2Choose what to flatten: forms, comments, or both.
- 3Download the flattened PDF.
Questions
- Will the form still be fillable?
- No. That is the point; the values become fixed page content.
- Does it reduce file size?
- Often slightly, since form structure is removed.
- Is the PDF uploaded?
- No. Everything runs in your browser, so your documents never leave your device.