Add Header to PDF Online
Add custom header text to selected PDF pages. Processing happens locally in your browser.
Frequently asked questions
How does the Add Header tool work?
Add custom header text to selected PDF pages. The operation runs from the tool workspace after you choose one PDF file.
Are files uploaded when I use Add Header?
No. Processing is designed to run locally in your browser, so PrefillPDF does not receive or store the document used by this tool.
Will Add Header overwrite my original file?
No. Your source remains unchanged. The tool creates a separate result for download.
What are the file limits for Add Header?
You can use up to 1 file with a combined size of up to 100 MB per operation.
Can Add Header open password-protected PDFs?
Encrypted PDFs may fail to open. Unlock the document first and then use the unlocked copy.
Does Add Header reduce document quality?
The tool avoids intentional recompression when page content can be copied directly. Conversion tools render output at the configured quality.
Can Add Header exclude the cover page?
Yes. Apply the header starting from page 2 or choose another page range.
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