Online PDF Watermark Tool
Add professional text watermarks to your PDF documents securely inside your browser.
Why Add Watermarks to PDF Files?
Protecting intellectual property, drafts, or confidential reports is essential before sharing documents publicly. Our free PDF Watermark tool stamps custom text overlays diagonally across your pages instantly.
How to Watermark PDF Documents Online
Follow these quick steps:
- Step 1: Upload your PDF document into the dropzone.
- Step 2: Type your desired watermark text (e.g., "CONFIDENTIAL" or your brand name).
- Step 3: Click "Add Watermark & Download" to save your protected file.
100% Client-Side Privacy
Your documents remain completely secure. All watermarking processing runs locally inside your web browser session using JavaScript without uploading files to remote servers.
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Frequently Asked Questions (FAQs)
Does it watermark all pages?
Yes, the tool applies your custom text watermark uniformly across every page of the uploaded PDF document.
Are my files safe and private?
Yes. All processing happens entirely within your browser session using client-side JavaScript.
Is this tool free?
Yes, MicroToolStack's PDF Watermark tool is 100% free with no limits or registration required.