Watermark PDF
Stamp custom text or image/logo watermarks onto PDF documents with custom position, rotation, opacity, and page range.
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How Watermark PDF Works
Upload or drop your PDF document into the workspace.
Choose Text or Image Watermark, configure font, size, color, opacity, and rotation.
Select your target page range and inspect the live interactive preview.
Click Apply Watermark to instantly download your watermarked PDF.
Frequently Asked Questions
How do I add a watermark to my PDF?
Upload your PDF document, select either Text Watermark or Logo / Image, customize font styling, color, opacity, rotation, and position, then click Apply Watermark to download your stamped document.
Can I repeat the watermark across the entire page like a tile pattern?
Yes! Under Position & Pattern, select 'Repeat Pattern (Tile)' to stamp a repeated diagonal watermark matrix across the entire surface of each page.
Can I choose which pages receive the watermark?
Yes. You can target All Pages, First Page Only, Odd Pages, Even Pages, or specify a custom page range such as '1-3, 5'.
Can I use transparent PNG images or logos as watermarks?
Yes. PNG images with alpha transparency are supported and render cleanly without opaque white boxes behind them.
Are my documents uploaded to any remote server?
Never. All PDF decoding, font rendering, and image embedding happen 100% locally in your browser memory using WebAssembly and Web Workers. Your documents never leave your computer.
Can I adjust the transparency or opacity of the watermark?
Yes. You can slide the opacity from subtle 5% underlay up to 100% solid stamp, ensuring underlying text remains perfectly legible.
Will the watermarking process reduce the quality of my PDF?
No. Original vector elements, text fonts, and embedded images remain untouched with zero downsampling or quality loss.
Is this watermark tool free to use?
Yes, it is 100% free with no subscription tiers, page limits, or third-party ads.