Help center
Header & footer— help & troubleshooting
Page numbers & running titles.
Open Header & footer →- Header & footer troubleshooting: password-protected files, the disabled button, question marks, overlapping textFixes for common Header & footer problems: encrypted PDFs, the grayed-out button, files over the 100 MB cap, characters replaced with question marks, and text that overlaps page content.
- How to add a header and footer to a PDFStamp a title, label or note across the top and bottom of every PDF page, entirely in your browser with no upload.