Watermark PDF
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About Watermark PDF
Enter the watermark text (DRAFT is the default). Set size (8 to 96), color, opacity, rotation, and a nine-point position. All pages start selected. Untick pages you do not want stamped, then apply.
This is visible text, not a logo and not a lock. Unusual characters may fail. Stick to common letters, numbers, and punctuation. Someone with an editor can still remove a visible mark.
How to use Watermark PDF
- 1Open a PDF. All pages start selected.
- 2Set text and style. Size, color, opacity, and rotation. The overlay on the preview matches the stamp.
- 3Pick a position. Nine-point grid: corners, edges, or centre.
- 4Apply watermark. Only ticked pages receive the watermark.
Limits and privacy
The stamp is drawn in this browser. aiaq.io does not add its own mark. 25MB on a phone, 50MB on a desktop. Password-protected PDFs cannot be opened. No account.
FAQs
- Can I use an image or logo?
- Not on this page. Text only.
- Does it stamp every page?
- By default yes. Untick pages, or use Select all after you clear a selection.
- Can someone remove the watermark?
- A determined editor can. This is a visible mark, not encryption. Use Protect PDF if the file should ask for a password.
- Why did some letters go missing?
- The stamp uses a standard PDF font. Characters that font cannot draw are refused. Use common letters, numbers, and punctuation.
- What does opacity do?
- Lower opacity lets body text show through the stamp. The default is 25%.