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🔒 No Upload 100% Free
PDF WATERMARK TOOL

Add watermark to PDF
free & private

Stamp your logo, signature, or any image onto every page of your PDF. Control position, opacity, and size. No upload — runs entirely in your browser.

🔒 Never uploaded ✅ 100% Free ⚡ Instant — in browser 🎨 5 positions, custom opacity JPG & PNG watermarks
PDF Watermark
Add image stamp to every page
No files loaded
Select PDF & watermark image
Your PDF file
📄
Drop PDF here
or click to browse
📄 —
Watermark image (JPG/PNG)
🖼️
Drop image here
PNG recommended
(transparent BG works!)
Watermark position
↖
Top Left
↑
Top Center
↗
Top Right
↙
Bottom Left
✛
Center
↘
Bottom Right
Opacity 50%
Applying watermark…
How It Works
STEP 01
Select your PDF
Drop or click to select the PDF you want to watermark. Any PDF works — multi-page supported.
STEP 02
Upload your watermark image
Select a JPG or PNG image — your logo, signature, or stamp. PNG with transparent background works best.
STEP 03
Set position & opacity
Click a position on the 6-cell grid. Adjust opacity (subtle or prominent) and choose the size.
STEP 04
Download your PDF
Click Apply Watermark — the watermarked PDF downloads instantly. No waiting, no server, no account.
Why This Tool
🔒
Your files never leave your device
No server upload. PDF and watermark image processed entirely in browser using pdf-lib. Zero privacy risk.
🎨
6 position options
Top or bottom, left/right/center — or the center of the full page. Click to choose instantly.
🪟
PNG transparency supported
Upload a PNG with a transparent background for a clean, professional watermark — no ugly white box.
📄
Applied to every page
The watermark appears on all pages of your PDF automatically — no per-page manual work.
✅
No watermark from us
We don't add our own branding to your PDF. The only watermark on the PDF is the one you choose.
⚡
Instant, even for large PDFs
No upload queue. Processing starts immediately in your browser — most PDFs are done in seconds.
Other Free PDF Tools
FAQ
Is this PDF watermark tool free?▼
Yes, completely free. No account, no watermark branding from us, no hidden limit. Free forever.
Is my PDF uploaded to a server?▼
No. Your PDF and watermark image never leave your device. All processing happens in your browser using pdf-lib, an open-source JavaScript library. Zero privacy risk.
What image formats work as a watermark?▼
JPG and PNG are supported. PNG is strongly recommended because it supports transparent backgrounds — your logo will appear cleanly on the PDF without a white or coloured box around it.
Can I control watermark opacity?▼
Yes. Use the opacity slider to set transparency from 5% to 100%. Lower opacity makes the watermark subtle and does not obstruct reading. Higher opacity makes it prominent and visible.
Will the watermark appear on every page?▼
Yes. The watermark is applied to every single page of the PDF at the position, opacity, and size you choose. There is no per-page selection — it covers all pages automatically.
About This Tool

Add Watermark to PDF — Free & Private

Our PDF watermark tool lets you stamp any image — logo, signature, company seal, or custom artwork — onto every page of your PDF document. The tool runs entirely inside your browser using pdf-lib, so your files never reach our servers.

This is ideal for protecting confidential documents, branding reports and proposals, or marking drafts as "Confidential" or "For Review Only".

Why PNG is Better than JPG for Watermarks

JPG images have a white background that will appear as a white box on your PDF page. PNG images support transparency — so your logo or signature will blend naturally onto the PDF background with no rectangular border.

If you only have a JPG logo, convert it to PNG with a transparent background first using any free image editor, then use that PNG as your watermark here.

Common Uses for PDF Watermarks

Watermarks serve several practical purposes: branding company documents with your logo, marking proposals as "Draft" before finalising, adding a "Confidential" stamp to legal documents, protecting shared PDFs from unauthorised redistribution, and adding a signature image to certificates and letters.

Free PDF Tools by OJOX

OJOX builds free browser-based PDF tools for Indian users — PDF to JPG, JPG to PDF, Page Numbers, Delete Pages, and Add Pages. All run in your browser with no upload and no account.

OJOX also builds AI-powered Android apps and Windows software. Visit our main site to explore OJOX, eMunsi, and Tender Manager.