Combine multiple PDFs into one, with drag-free reordering and page-count verification.
PDF→ PDFModerate on device
Watermark PDF
Stamp every page with custom text, size, color, and opacity — rendered into a fresh local output.
Processed locallyIn: PDFOut: PDF
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How to use watermark pdf
Select a PDF and enter the watermark text.
Adjust size, color, opacity, and diagonal or horizontal placement.
Apply — the watermark is drawn onto each page of a fresh output document.
The output is reopened to verify page count before download.
What this tool does
- Custom text with size, opacity, color, and rotation
- Applied to every page consistently
- Fresh-document output
How the result is verified
The stamped output is reopened locally and page count and dimensions are compared with the source before download.
Frequently asked questions
Does a watermark protect confidential content?
No. It signals status (like DRAFT) and discourages reuse, but underlying text remains selectable and extractable. To remove sensitive content, use redaction.
Is my file uploaded to a server?
No. The file is opened with your browser's File API and processed by code running in your tab. You can confirm this yourself: open your browser's developer tools, watch the Network panel, and process a file — no request carries your file's bytes. See our How it works page for a step-by-step verification guide.
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