Add Watermark to PDF Online Free
Stamp every page with text or an image watermark. Tune rotation and transparency with live previews on each thumbnail.
Watermark Settings
Live Preview
Watermark overlays appear on every page thumbnail in the workspace as you adjust settings. The exported PDF matches what you see.
Add text watermark to PDF pages
Add watermark to PDF documents to mark drafts, brand materials, or label confidential files. Enter custom text or upload an image, then adjust font size, rotation, opacity, and placement with live thumbnail previews on every page.
BrainyPDF watermark PDF processing runs entirely in your browser. Your files never leave your device, making this add watermark to PDF free tool ideal for internal reviews and client deliverables that need a visible stamp.
Combine with protect PDF encryption for sensitive drafts, redact PDF before sharing, or compress PDF after watermarking large portfolios.
Add image watermark with live preview
Watermark PDF without software or sign-up
How to add a watermark to a PDF
Stamp confidential labels, logos, or custom text across every page of your PDF. Adjust rotation, opacity, and position with live thumbnail previews — processed entirely in your browser.
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Upload your PDF
Add the document you want to watermark. Page previews load for live feedback as you adjust settings.
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Configure the watermark
Enter text or upload an image watermark. Set font size, rotation angle, opacity, and placement.
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Preview on every page
Review how the watermark appears on each thumbnail before applying it to the full document.
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Apply and download
Click Add Watermark to stamp every page and download your watermarked PDF.
BrainyPDF processes every file locally in your browser. No uploads, no cloud storage, no account required — a privacy-first alternative to server-based PDF tools.
Free PDF watermark tool — frequently asked questions
Questions about adding watermarks to PDFs online for free, text and image stamps, and related tools.
How do I add a watermark to a PDF for free?
Upload your PDF, enter text or upload an image watermark, adjust opacity, rotation, and position, then click Add Watermark. BrainyPDF stamps every page locally with live thumbnail previews — free with no account.
How do I add a text watermark to a PDF?
Type your watermark text in the sidebar — labels like "CONFIDENTIAL", "DRAFT", or your company name work well. Adjust font size, diagonal rotation, and opacity, then apply to every page at once.
How do I add an image watermark to a PDF?
Upload a PNG or JPG logo as an image watermark in the sidebar. Adjust size, rotation, and transparency with live previews on each page thumbnail before exporting.
How do I add a confidential or draft watermark to a PDF?
Type "CONFIDENTIAL", "DRAFT", or "COPY" as your watermark text and set diagonal rotation with reduced opacity. This free stamp is ideal for internal reviews before final distribution.
Is it free to add a watermark to a PDF online?
Yes. BrainyPDF is a completely free PDF watermark tool with no sign-up, subscription, or branding added to your output. Watermark unlimited documents without daily limits.
Do I need an account to watermark a PDF?
No account is required. Upload your PDF, configure the watermark, and download the stamped file immediately. No email registration or login wall.
Is adding a watermark to a PDF safe online?
Your files are never uploaded. Watermarking runs entirely in your browser, so proprietary documents and client deliverables stay on your device throughout the process.
How do I add a watermark to a PDF on iPhone?
Open BrainyPDF in Safari or Chrome on your iPhone or iPad, upload the PDF, and enter your watermark text or image. Processing happens locally with no app installation needed.
How do I add a watermark to a PDF without software?
Open BrainyPDF in any modern browser, drop your PDF, configure text or image watermark settings in the sidebar, and download the result — no desktop app required.
Can I make a PDF watermark transparent or adjust opacity?
Yes. Use the opacity slider in the sidebar to make your watermark more or less visible. Combine with rotation and position controls to get the exact look you need on every page.