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PDF Watermark

Add a text watermark to all pages of your PDF file. Fast, private, and processed directly in your browser.

Tip: Use opacity between 0.15 and 0.30 for professional watermarks.
Privacy-first: Your PDF stays on your device. Nothing is uploaded.

Why add a watermark to a PDF?

Watermarking helps protect your PDF documents from unauthorized copying and reuse. It is commonly used for invoices, contracts, reports, certificates, and private business documents.

How to Use

Upload your PDF, enter the watermark text, then adjust size, rotation, and opacity until the result matches the level of visibility you want. A strong watermark can label a document as confidential, draft, sample, internal, or approved without changing the core content. This is useful when you are sharing working files, review copies, templates, or documents that should not be mistaken for final versions.

Best watermark tips

For professional results, use light opacity (0.15–0.30), a 30°–55° rotation, and place a watermark like “CONFIDENTIAL” or “DRAFT” across the center.

FAQ

What text works well as a watermark?
Short labels such as “DRAFT,” “CONFIDENTIAL,” or a company or project name are usually the clearest choices.
Why keep opacity low?
Lower opacity makes the mark visible without making the underlying document hard to read.
Is this only for security?
No. Watermarks are also helpful for branding, review status, and distinguishing draft from final files.

Privacy Reassurance

Watermarking runs locally in your browser, so DailyToolStack does not need to keep a copy of the original document or the marked version. That is useful for internal reports, client documents, and other files that should stay under your control.

Related PDF Tools

Continue your workflow with these free DailyToolStack PDF tools.

Protect PDF
Encrypt your PDF file with a secure password.
Merge PDF
Combine multiple PDF files into one document.
Compress PDF
Reduce PDF file size without losing quality.

Want more professional PDF tools?

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