PDF Watermark
Add custom text watermarks to each page of a PDF document with adjustable opacity.
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Apply custom text watermarks across every page of your PDF documents with adjustable transparency. This online tool overlays gray text near the vertical midpoint of each page directly over existing content, making it straightforward to label drafts, indicate confidentiality, or mark documents for internal review.
You can set custom text between 1 and 200 characters, such as DRAFT, COPY, or CONFIDENTIAL. The opacity slider allows you to fine-tune the visibility of the overlay between 0.05 for a subtle background tint and 1.0 for a bold, solid label. By default, the text is set to CONFIDENTIAL with an opacity value of 0.3, offering balanced readability that protects your layout while keeping underlying text legible.
Upload any standard PDF file, adjust your preferred wording and transparency settings, and process the file. The tool generates an updated PDF file containing the overlaid watermark across all pages for immediate download.
Instructions
- Select and upload a standard PDF document.
- Enter the watermark text you want to apply, up to 200 characters, or keep the default text.
- Set the opacity value between 0.05 and 1.0 depending on how faint or prominent you want the overlay.
- Run the tool to apply the watermark across every page of the document.
- Download the resulting watermarked PDF file.
Examples
- Marking an agreement draft: Upload contract.pdf, set the watermark text to 'DRAFT REVIEW', and set opacity to 0.25 to overlay a subtle label across all pages.
- Marking an internal memo: Upload memo.pdf, leave the default text 'CONFIDENTIAL', and set opacity to 0.4 for clear visibility.
FAQ
Where does the watermark appear on each page?
The watermark is rendered in gray text and positioned near the vertical midpoint of every page, placed over the existing document content.
What is the allowed range for opacity?
Opacity accepts values from 0.05 (very faint) to 1.0 (fully opaque). The standard default setting is 0.3.
Can I leave the watermark text blank?
No, the watermark text requires between 1 and 200 characters. If the text field is empty, the tool will reject the input before processing.
What file types can I upload?
The tool processes standard PDF documents. Other file types, such as Word documents or plain images, must be converted to PDF before applying a watermark.