Add text watermarks to every page of a PDF. Control font, size, opacity, rotation and position. 100% browser-based.
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Processed Today
0ms
Latency
100%
Browser-Based
Nothing uploaded — all browser-based.
Use immediately, no account needed.
Watermark applied to every page.
Knowledge Base
Yes. The watermark applies to all pages by default. Customize text, font size, opacity, rotation angle and position for each placement.
Yes. The opacity slider from 10% to 100% controls transparency. 20-30% opacity is typical for watermarks that are visible but not distracting.
Yes. Choose center, diagonal (across the full page), or specific corner positions. Diagonal placement is the most tamper-resistant option.
Yes, completely free. pdf-lib runs in your browser with no file size limits or signup requirements.