All processing happens locally in your browser using WebAssembly. Your files are never uploaded to any server and never used to train AI models.
Add professional watermarks entirely for free, directly in your browser.
Control transparency, position (diagonal, centered, header/footer), color, and page selection.
Easily add company names, CONFIDENTIAL, or DRAFT stamps to any document before sharing.
LovePDFs is a completely free alternative to Adobe Acrobat, Smallpdf, and ilovepdf. Unlike other online tools that upload your files to remote servers, LovePDFs processes everything in your browser using WebAssembly technology. Your files never leave your device — not even for a second.
This makes LovePDFs the right choice for sensitive documents — contracts, medical records, financial files, government forms, and anything you wouldn't want sent to a third-party server. It's also the only major PDF tool suite that is GDPR-friendly by design, since no personal data or file content ever leaves your browser.
LovePDFs provides a free browser-based way to add custom text watermarks to any PDF without needing Adobe Acrobat or any paid software.
Enter "CONFIDENTIAL" as your watermark text, choose diagonal placement, adjust opacity to around 30%, and click Apply Watermark.
Yes — choose to apply the watermark to All Pages, First Page Only, Last Page Only, or Odd/Even pages.
Currently the tool supports text watermarks. Image/logo watermarks will be added in an upcoming update.
Have a question, feedback, or feature request? We'd love to hear from you.
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