How to Add a Watermark to a PDF for Free Online
Add text or image watermarks to PDF files for free online. Mark documents as Confidential, Draft, or add your logo — no Adobe required.
Add a text or image watermark to any PDF for free — no Adobe Acrobat, no subscription. FixMyPDF's Watermark PDF tool lets you stamp "Confidential", "Draft", your company name, or a logo on every page in seconds.
Common Watermark Use Cases
"CONFIDENTIAL" diagonal stamp on legal and financial documents. "DRAFT" watermark on documents under review. Company name or logo on client deliverables. "VOID" on cancelled contracts. "SAMPLE" on proposals before payment.
How to Watermark for Free
Open fixmypdf.in/tools/watermark-pdf. Upload your PDF. Type your watermark text (or upload an image). Set opacity (30–50% is standard for diagonal stamps). Choose font size and colour. Click "Apply Watermark". Download the watermarked PDF.
Text vs Image Watermarks
Text watermarks (like "DRAFT") are quick to set up and always legible. Image watermarks allow you to add a company logo or seal, maintaining brand identity on client-facing documents. Both options are available in the free tool.
Setting the Right Opacity
Too light and the watermark is invisible in print. Too dark and it obscures the document content. For diagonal text stamps, 30–40% opacity is the sweet spot. For logo watermarks in a corner, 15–25% is typical.
Adding Watermarks Across All Pages
The watermark applies to every page of the PDF by default. This is important for multi-page contracts and reports where you need every page marked, not just the cover.
Free Alternatives
PDF24, Smallpdf, and ILovePDF also offer free watermarking with server-side processing. FixMyPDF processes locally in your browser, so your confidential documents never leave your device — which is the key differentiator for sensitive content.
Removing Watermarks Later
If you need to deliver a clean final version, the original unwatermarked file is your source of truth. Always keep the original PDF; distribute only watermarked copies until the document is finalised.
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