Stamp a text or image watermark across every page of a PDF to mark drafts, brand documents, or protect ownership. Everything runs locally in your browser for complete privacy.
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About Watermark PDF
Watermark PDF stamps a text or image mark across every page of a document in seconds, without uploading anything. Use it to label drafts as confidential, brand shared reports with your logo, or discourage unauthorized copies of your work.
Unlike server-based watermarking tools that copy your files to a remote machine, Neuctra Tools processes everything locally in your browser. Your documents stay on your device and are never seen by anyone else.
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How to Watermark a PDF
Drop your PDF into the upload area or browse for it.
Choose Text Watermark or Image Watermark, depending on what you want to stamp onto the document.
Pick a position, adjust the opacity, and for text watermarks, set the font size and color.
Click Add Watermark and download the finished file.
Built for Speed and Privacy
Flexible Positioning
Center, diagonal, or corner placement lets you stamp a document without hiding the content underneath.
Private by Design
Ideal for confidential drafts, contracts, or branded reports, since nothing is ever uploaded.
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Upload your PDF, choose Text or Image Watermark, pick a position and opacity, then click Add Watermark. The tool applies the stamp to every page instantly and gives you a download link, with no account, signup, or cost involved.
Yes, type your text, select the Diagonal position preset, and the watermark is rotated 45 degrees across every page of the document. Adjust the font size and opacity so it stays legible without covering the underlying content.
No, every watermark is applied entirely inside your browser using client-side JavaScript. Your document is never uploaded, stored, or transmitted anywhere, so confidential files stay private.
Yes, switch to Image Watermark mode and upload a PNG or JPG logo. It is scaled proportionally and stamped onto every page at the position and opacity you choose.
Not if you lower the opacity slider, which defaults to 30 percent so the original content stays readable underneath. You can also choose a corner position instead of the center if you want the watermark out of the way.
You can pick from six preset colors or use the native color picker to choose any custom hex value. The color applies to the watermark text on every page of your output file.
No, the tool draws the watermark as a vector text or image layer directly onto each page without re-rendering or compressing existing content. Your original text and images keep their original resolution and stay selectable.
Not automatically, since the watermark becomes a permanent part of the saved PDF's page content, the same way a printed stamp would. Keep a copy of your original file if you might need an unmarked version later.
No, the watermark is applied to every page of the document regardless of length, and there is no daily limit on how many files you can process. Larger documents simply take a moment longer to save.
