Stamping a date on every page of a PDF is useful for version control, document dating, and creating time-stamped records. Here is how to do it for free.
Navigate to the watermark tool in any browser.
Upload your PDF. In the watermark text field, type today's date in your preferred format (e.g., "2026-03-07" or "March 7, 2026"). Set font size to 12–16pt. Set opacity to 80–100% for a clear visible stamp. Set position to footer or corner.
Tip: For a subtle date stamp in the bottom corner, use 10pt font at 60% opacity — visible on close inspection but not distracting during reading.
Click Apply to All Pages. Download the date-stamped PDF.
Type the date manually in the watermark text field — it does not auto-insert today's date. For header/footer with {date} token, use the Header & Footer tool instead.
Yes — completely free at pdfeditor.onl/watermark-pdf.