Add Text to PDF stamps the same text on every page of a PDF — CONFIDENTIAL, DRAFT, your name, a date or a notice. Choose a light diagonal watermark across the page, centred text, or a clean line at the bottom, with your own font size and opacity.
What opacity should a watermark use?
Around 20–35% is the sweet spot for a diagonal watermark: clearly visible, but the document underneath stays easy to read. For a bottom line like a name or date, you can use a higher opacity since it sits in the margin.
Can the stamped text be removed later?
The text becomes part of each page in the new PDF, so it cannot be peeled off casually — that is the point of a watermark. Keep your unstamped original if you need a clean copy.
Are my files uploaded to a server?
No. The Add Text to PDF runs entirely in your browser — your file is processed on your own device and is never sent to ToolNest or anywhere else. Close the tab and everything is cleared.