Add Watermark to PDF Without Uploading
Vikone Private adds a watermark to your PDF entirely in your browser — your file is never uploaded to any server. From open to download, everything happens on your own device; not a single byte leaves your computer.
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🔒 No upload · Runs entirely in your browser
Watermarks are added locally — your PDF never leaves your device
Vikone Private adds watermarks to your PDF locally in your browser — your file is never uploaded to any server. Want proof? Disconnect from the internet before you start — the tool keeps working, because your file was never going anywhere.
How it compares to typical online watermark tools
| Tool | How your file is handled |
|---|---|
| iLovePDF | Uploaded to servers |
| Smallpdf | Uploaded to servers (free tier: 2 per day) |
| PDF24 | Uploaded to servers |
| Sejda | Uploaded to servers (free tier: 3 per hour) |
| Soda PDF | Uploaded to servers |
| PDF Candy | Uploaded to servers (free tier: one file at a time) |
| 🟢 Vikone Private | Local browser processing — no upload · free · unlimited · no account |
Competitor limits are noted only where publicly documented; facts are stated neutrally and accurately.
How to add a watermark to a PDF
- Upload your PDF using the tool above — drop it in or click to select.
- Choose Text or Image watermark. Set text, font, opacity, position, and rotation — or upload a PNG/JPG logo.
- Select which pages to watermark: all pages, or enter a custom range (e.g. 1, 3-5).
- Click "Apply Watermark" — the watermark is added locally. Download the result.
Frequently asked questions
- How can I add a watermark to a PDF without uploading it?
- Most online tools — iLovePDF, Smallpdf, PDF24, Sejda, Soda PDF, PDF Candy — require you to upload your PDF to their servers before processing it. Vikone Private is different: watermarking happens entirely in your browser, locally. Your file is never uploaded. Want to verify? Disconnect from the internet first — it still works.
- Does this upload my PDF?
- No. The entire process runs in your browser using pdf-lib. Your PDF never reaches a server. Want proof? Disconnect from the internet before you start — the tool keeps working, because your file was never going anywhere.
- Is it safe to use on confidential documents?
- Yes. Because your PDF is processed locally and never leaves your device, it is safe for confidential, privileged, or sensitive documents. There is no server to be compromised, no third-party storage, and no account required.
- What types of watermarks are supported?
- Text watermarks with customisable font (Helvetica, Times, Courier), size, colour, bold, opacity, rotation, and position. Image watermarks with PNG or JPG files at a custom scale. Both can be applied to all pages or a custom page range, and can be tiled across the page.
- Can I watermark only specific pages?
- Yes. Choose "Custom pages" and enter a comma-separated list of page numbers or ranges, e.g. "1, 3-5, 8". The watermark will be applied only to those pages.
- Does the tool work offline?
- Yes. After the page loads, no internet connection is needed. All processing happens locally using pdf-lib, which runs entirely in your browser.
- Does adding a watermark change the original content?
- No. The original text, images, links, and layout of your PDF are preserved exactly. Only the watermark layer is added on top.