Add Watermark PDF Tools
Add a professional text watermark like Draft or Confidential, or upload your own logo. Our vector engine keeps everything sharp, and since it runs in your browser, your files stay private – no uploads, no servers.
💡 Pro Tip: For watermarks that are hard to remove, place them over text or images and set opacity to around 20%. It’s a simple trick that deters tampering without ruining readability. Check out our complete guide to PDF watermarking for more ideas.
Protect Your Work with Professional Watermarks
Watermarks aren’t just for show – they protect your intellectual property, mark drafts, and add a layer of professionalism. Our tool goes beyond simple overlays. It uses a vector‑injection engine that adds watermarks as a separate layer without recompressing your original file. So your text stays searchable, images stay crisp, and the watermark is tough to remove without damaging the content underneath.
Elite vector engine means watermarks are added as vector graphics – they look sharp at any zoom level and keep file size minimal. 100% private – because we use WebAssembly (Wasm), everything happens locally. Your files never touch a server, making this the safest option for contracts, legal documents, or anything confidential.
Need to mark only certain pages? Want to batch watermark a whole folder? You’ve got full control over text, images, opacity, rotation, and page ranges. Once your documents are protected, you might also want to Add Page Numbers, Protect PDF with a password, or Compress PDF to shrink the file size – all with the same privacy‑first, browser‑based approach.
Frequently Asked Questions
No, it won’t. Our engine adds watermarks as a lightweight vector layer. Your file size stays almost the same, and there’s no noticeable difference in how fast it opens or scrolls.
Absolutely. You can upload your logo (PNG or JPG) and position it anywhere on the page. For the cleanest result, use a transparent PNG – that way you avoid a white background covering your document.
You can choose a page range. Want it on just the cover page? Or only on pages 5‑10? Our tool lets you pick exactly which pages get the watermark – perfect for marking some sections as ‘draft’ while keeping others clean.
When you upload a file to most online tools, it sits on a server somewhere. With our tool, everything happens locally – your file never leaves your device. That’s essential for contracts, legal documents, or any sensitive information.
Place it over text or important elements, and set the opacity low (around 20%). That way, if someone tries to erase it with a PDF editor, they’ll damage the actual content underneath. It’s a simple but effective deterrent.