Add PDF Watermark
Center a Latin text watermark on every visible PDF page
About this tool
Add a Latin text mark to every displayed PDF page, including cropped and rotated pages. The rotated text is centered as a whole, so changing its angle does not move the mark off the page. Choose a 10β120 point font size, 5β100% opacity, an angle from -90Β° to 90Β° and a color. Text that cannot fit or cannot be displayed by the built-in font is rejected. Original forms and annotations remain and may appear above the mark. Watermarks are editable page content; they do not hide sensitive information or stop copying.
Scenario Recipes
Mark a cropped draft
Goal: Keep the mark centered and readable without obscuring important text.
- Load the example or an unsigned PDF and enter DRAFT.
- Choose a readable size, angle and low opacity; create the marked copy.
- Download and check the smallest page and each rotated page before sharing.
Result: A separate marked draft with the original retained.
Failure Clinic (Common Pitfalls)
Text is rejected
Cause: The mark is too wide for a cropped page.
Fix: Reduce the font size or use a shorter label.
A signature appears above the mark
Cause: Annotations are drawn above page content by some readers.
Fix: Inspect the result and use a dedicated PDF editor when stacking order matters.
Production Snippets
A horizontal draft mark
text
Text: DRAFT
Angle: 0 degrees
Opacity: 30%
Placement: center of every visible pageFrequently Asked Questions
Can I use Chinese or emoji?
No. New watermark text uses a built-in Latin font. Unsupported text is rejected before an output is created.
Where is the watermark placed?
Its rotated text bounds are centered in the visible page after cropping and rotation. All pages receive the same text.
Does it prevent copying or editing?
No. The mark can be edited or removed with PDF editing software. Use redaction for sensitive information.
Why is long text rejected?
The complete rotated mark must fit every visible page. Shorten it or reduce the font size.
Are forms and annotations removed?
No. They remain in the source document and may be drawn above the new page-content watermark.
What files are unsupported?
Encrypted PDFs, XFA and digital signature fields, including empty signature fields, are rejected. Inputs are limited to 50 MiB and 200 pages, with an 80 MiB output limit.
Does processing upload the document?
PDF processing runs locally in your browser. Generate a separate result and click Download; keep and inspect the original and output before sharing.
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