Flatten PDF
Lock form fields and annotations into the page so they can no longer be changed.
How to flatten a PDF
- 1. Add your PDFSelect one PDF of up to 100 MB and 500 pages.
- 2. Pick a modePreserve text keeps text selectable. Visual lock turns pages into images.
- 3. DownloadSave the flattened copy.
Your files stay on your device. This tool does its work in your browser, and your files are never uploaded.
Common questions
What does flattening do?
Fillable fields and annotations become part of the page, so they can no longer be changed.
Does it work with XFA forms?
Use Visual lock, because native XFA flattening is not supported.
What about digital signatures?
Flattening changes the file, so the tool warns you that certificate signatures may no longer be valid.