เจเจธ เจเฉฐเจเจฐเฉเจฒ เจฆเฉ เจธเฉเจง เจเจฐเจจ เจจเจพเจฒ เจเจน เจชเฉฐเจจเจพ เจเจชเจฃเฉ เจเจช เจ
เฉฑเจชเจกเฉเจ เจนเฉ เจเจพเจตเฉเจเจพ

Lock PDFs and images in Preview on Mac
You can lock a PDF or image so that it canโt be edited or deleted. If you own a locked document, you can edit the document after unlocking it. Others can change the documentโs contents only by creating a duplicate of the document and editing the duplicate.
Go to the Preview app
on your Mac.
Move the pointer next to the documentโs name in the title bar, click
, then select or deselect the Locked tickbox.
Tip: To lock or unlock a file in the Finder, select the file, choose File > Get Info, then select or deselect the Locked tickbox.