Add Watermark to PDF Online Free — Text or Logo, No Upload
Add text or image watermarks to every page of a PDF free online. CONFIDENTIAL, DRAFT, custom logos — choose position, opacity, and size. Runs in your browser, files never uploaded.
Quick Answer: Use the free PDF Watermark tool at ViewAnyFile.app to add text or image watermarks to every page of your PDF. Choose position, opacity, and font size. No file upload — processed entirely in your browser.
How to Add a Watermark to a PDF
- Open ViewAnyFile.app/tools/pdf-watermark
- Drop your PDF or click to browse
- Choose Text watermark (CONFIDENTIAL, DRAFT, etc.) or Image/logo watermark
- Set position, opacity, font size, and color
- Click Apply Watermark & Download — your watermarked PDF saves instantly
Text Watermark Options
| Setting | Options |
|---|---|
| Text | Any text — CONFIDENTIAL, DRAFT, SAMPLE, company name, etc. |
| Position | Diagonal (tiled), Center, corners |
| Font size | 12–120 pt |
| Color | Any color via color picker |
| Opacity | 5%–100% (30% is typical for watermarks) |
Image / Logo Watermark
Upload a PNG (with transparency) or JPEG as your watermark image. Your company logo, signature, or stamp can be placed at any position with adjustable size (% of page width) and opacity.
PNG logos with transparent backgrounds produce the cleanest results — the watermark blends naturally with the page content behind it.
Why Add a Watermark to a PDF?
- Draft management — DRAFT watermarks prevent recipients from distributing incomplete versions
- Confidentiality — CONFIDENTIAL markings remind readers of document sensitivity
- Brand protection — add your logo to reports, proposals, and presentations before sharing
- Sample documents — mark samples and templates before giving them to prospects
- Legal documents — VOID or DO NOT COPY stamps on templates
Privacy: Your PDFs Never Leave Your Device
Unlike Smallpdf, Adobe, or ILovePDF — which upload your file to their servers — ViewAnyFile.app processes your PDF entirely in your browser using the pdf-lib WebAssembly library. Your confidential documents are never transmitted anywhere. The watermark is applied client-side and the result downloads directly to your device.
Related PDF Tools
- View any PDF — open and read PDFs in the browser
- Merge PDFs — combine multiple files into one
- Split PDF — extract pages before watermarking
- Compress PDF — reduce file size