Watermark Files Online
Stamp an image or text over your PDF. Free, secure, and works on any device — no signup required.
A 'DRAFT' or 'CONFIDENTIAL' watermark across every page is a quiet way to set expectations on a document. PDFWix lets you stamp text or an image (logo, signature graphic) onto a PDF with full control over position, opacity, rotation, font and which pages get marked. It's the simple, free version of what enterprise document tools charge a subscription for.
or drop PDFs here
Free account keeps your last 30 jobs (filename + tool only — never your files) so you can re-find them later.
🔒 HTTPS · Browser-side processing · 100% free
How to Watermark
- 1
Upload your file
Click "Select PDF files" or drag and drop the document into the upload box. Multiple files are supported where it makes sense.
- 2
Configure options
Pick the settings on the right — the defaults work for 90% of jobs, so most users can skip straight to the next step.
- 3
Click "Watermark"
PDFWix processes the file instantly in your browser. No upload progress bar, no waiting.
- 4
Download the result
Save the new file to your device. The original file is never modified.
Tips for watermarking PDFs
Diagonal + 30% opacity = professional
A 45° rotation at ~30% opacity is the classic watermark look. Less obtrusive than horizontal text, more visible than 10%.
Use an image for logos
Upload a transparent PNG to overlay your brand mark. Keep it under 500 KB for fast browser processing.
Watermark before sending, not before storing
Keep a clean original. Watermarked PDFs are hard to undo cleanly.
Combine with [Protect PDF](/protect-pdf)
Watermarks are visual — they don't stop screenshots. Pair with password protection if confidentiality matters.
Selective pages save the cover
Use the page-range option to skip the cover page or table of contents — watermarks there look amateur.
Why use PDFWix to watermark PDFs?
- Completely free. watermark as many PDFs as you need without paying a cent or hitting a paywall.
- No signup required. Skip account creation. Just upload, watermark, and download.
- Works on any device. Whether you're on Windows, Mac, Linux, iPhone, or Android — PDFWix runs entirely in your browser.
- Privacy first. Your files are encrypted in transit and automatically deleted from our servers within an hour.
- Lightning fast. Most watermark jobs finish in under 10 seconds, even for large files.
- Preserves quality. Text, images, and formatting stay exactly as they were in the original PDF.
Common uses for watermarking PDFs
- Watermark for monthly reports and expense filings
- Watermark for academic papers and references
- Watermark for contracts and signature workflows
- Watermark for ebooks and training manuals
- Watermark for tax documents and accountant submissions
Frequently asked questions
Is the PDFWix watermark tool really free?
Yes. Watermark is 100% free, with no hidden charges, no signup, and no watermarks added to the output.
Are my files safe when I use Watermark?
Most processing happens directly in your browser, so your file never reaches our server. When server processing is required, files travel over HTTPS and are processed in memory only — never written to disk.
Will Watermark reduce the quality of my document?
No. PDFWix preserves the original quality of your file, including text, images, fonts, and formatting.
Can I use Watermark on mobile?
Absolutely. PDFWix works on any device with a browser — phones, tablets, laptops, or desktops. No app installation required.
Do I need to create an account?
No. You can use every PDFWix tool without signing up. An optional free account just keeps a history of your conversions (filename and tool only).