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Add Image Watermark
Overlay image watermarks, logos, or branding seals onto PDF pages locally in your browser.
100% Offline Image Branding
Select PDF document
Drag & drop or click to choose PDF
Select Watermark Image
PNG, JPG, WebP, SVG supported
Document Preview
document.pdf
Image Placement Preview
See how your logo overlays on the document page.
Overlay Configuration
50%
50%
Baking logo watermark into PDF...
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Frequently Asked Questions
Quick direct-answer guides about using this utility tool locally and securely.
What image formats can I use as watermarks?
You can upload PNG or JPEG images. Transparent PNG files are recommended for a cleaner look, such as company logos or official seals.
How can I place the watermark image?
You can place the watermark image centered on the page, tiled (repeated across the page), or in the corners (like bottom-left or top-right) with adjustable scale and transparency.
Can I apply the image watermark to specific pages?
By default, the watermark is applied to all pages of the document to ensure consistent branding and protection.
Is my PDF uploaded to a server when adding a watermark?
No, KuberAgent adds watermarks entirely in your browser, so your document never leaves your device — several competitors still upload files to a server even for simple watermarking.
Is this watermark tool free with no limits?
Yes, KuberAgent watermark tool is completely free with no cap on the number of PDFs — unlike Smallpdf, which limits free users and pushes a paid upgrade for unlimited watermarking.
Can I tile or repeat my watermark image across the entire page?
Yes, besides placing it centered or in a corner, you can repeat the watermark in a tiled grid pattern across the page — commonly used for "Confidential" or "Draft" stamps, since a tiled watermark is much harder to crop out of the document.`
Does adding a watermark permanently change my original PDF?
The watermark is embedded into a new PDF file, and your original file remains untouched on your device — always keep a copy of the un-watermarked original if you might need it later, since the watermarked version can't be reverted back.
Does a watermark actually prevent someone from copying or stealing my document?
Not completely — a watermark doesn't technically block copying or editing, but it acts as a strong visual deterrent and clearly asserts ownership, making it much harder for someone to reuse your content without credit or claim it as their own.
Can I adjust the transparency and size of my logo watermark?
Yes, you can control both opacity (so the watermark doesn't obscure the content beneath it) and scale, letting you fit your logo appropriately whether you want a subtle branding mark or a bold, clearly visible stamp.