Add Watermark to PDF
Secure your documents with text or image watermarks. Fast, secure, and professional.
About PDF Watermark
Confileo's PDF Watermark tool stamps a text or image watermark across every page of a PDF. Everything runs in your browser, free and without signup, and your files are deleted automatically after processing.
Watermarks protect documents from misuse, mark drafts and confidential copies, and brand your files with a logo — essential for designers, agencies and anyone sharing work before final approval.
Confileo's PDF Watermark tool stamps text (like “Confidential” or “Draft”) or your logo across every page, with full control over position and opacity so the mark protects the page without hiding the content.
A watermark states what a document is before anyone reads a word of it. DRAFT stops a version being quoted as final, CONFIDENTIAL sets an expectation about forwarding, and a company name across a proposal makes an extracted page still traceable to you. It is a labelling tool, not a security one — and used for labelling it works very well.
You choose the text, its position, size, angle and opacity, and apply it across every page. The document underneath stays readable, which is the whole balance to strike.
The setting that decides whether a watermark helps or annoys is opacity. Too faint and it disappears when the page is printed in greyscale or screenshotted; too strong and it competes with the text and makes the document tiring to read. A diagonal mark at low opacity across the middle of the page is the convention because it survives cropping — a mark in a corner is simply cut off.
Watermark the copy, never the master. Keep an unmarked original, because removing a watermark cleanly afterwards is not something any tool does well. This is a one-way step in practice, so make it the last one before sending.
Worth being honest about what it does not do: a watermark discourages casual reuse and makes the source obvious, but it does not prevent copying, and someone determined can crop or edit around it. For information that genuinely must not leave, redact it; for a file that should not be opened at all, use a password.
Your file is processed and then deleted from the server, and your original stays unmarked on your device.
Quick facts
- Price
- Free — no paywall
- Signup
- Not required
- Max file size
- Up to 100 MB per file
- Your files
- Deleted automatically after processing
- Works on
- Any browser — desktop, tablet, mobile
- Watermark
- None on your output
How to use PDF Watermark
- 1Upload your PDF.
- 2Add your watermark text or logo and position it.
- 3Download the watermarked PDF.
Why use Confileo
- ✓100% free with no daily limits, watermarks or hidden paywalls.
- ✓No signup or account required — start using it instantly.
- ✓Your files are processed securely and deleted automatically for full privacy.
- ✓Works in any browser on desktop, tablet and mobile — nothing to install.
- ✓Fast processing built to handle real, everyday document workloads.
PDF Watermark — Frequently asked questions
Can I control the watermark transparency?
Yes. Adjust the position and opacity so the watermark protects the page without hiding the content.
Does it watermark every page?
The watermark is applied consistently across all pages of the document.
Can I add my company logo as a watermark?
Yes. Upload your logo image and place it as a watermark across every page to brand and protect your documents.
How do I stamp 'Confidential' or 'Draft' on every PDF page?
Add the text you want (such as “Confidential” or “Draft”) and it is applied to every page automatically.
Does the watermark affect readability?
Not if you set the opacity. A light watermark protects the document without hiding the text behind it.
Why add a watermark to a PDF?
To protect copyright, deter misuse of documents, and clearly mark drafts or confidential copies.
Can I use either text or an image as the watermark?
Yes. Add a text watermark like CONFIDENTIAL or DRAFT, or upload an image or logo.
Can I choose where the watermark appears and its angle?
Yes. You can set the position and rotation so it sits where you want on every page.
Can the watermark be removed later?
The watermark is merged into the pages, so keep an unwatermarked copy of the original if you may need a clean version.
Is this tool really free?
Yes. Every Confileo tool is free to use with no daily caps, no watermark on your output and no credit card required.
Do I need to create an account?
No. You can use the tool straight away without signing up or logging in.
Are my files safe and private?
Yes. Your files are processed for the task you requested and then deleted automatically — they are never shared or kept.
Does it work on my phone?
Yes. The tool runs in any modern browser, so it works the same on desktop, tablet and mobile with nothing to install.