Stamp a text or image watermark anywhere on the page. Drag to position, rotate, and adjust opacity. All private – no uploads, no sign‑up.
Drag & drop a PDF here, or browse
Files up to 50 MB
✅ Watermark Added Successfully
This free online PDF watermark tool lets you stamp text or image watermarks across every page of your document — all directly in your browser. Whether you need to mark a contract as "DRAFT", add a "CONFIDENTIAL" stamp to sensitive files, or overlay your company logo for branding, this tool gives you full control over the watermark's appearance and placement.
Watermarking a PDF serves several important purposes:
Unlike most online PDF watermark tools that upload your file to a server, PDFcone processes everything client‑side. Your PDF never leaves your device. You can even disconnect your internet after loading the page and the tool still works — that's the proof of genuine privacy. No sign‑up, no email collection, and no file storage on any remote server.
Can I add a watermark to only specific pages?
This tool currently applies the watermark to all pages of your PDF. If you need to watermark only certain pages, you can use our Split PDF tool to extract the pages you want, watermark them separately, and then Merge PDF to recombine them. This gives you full page‑by‑page control while keeping everything private.
What image formats are supported for the watermark?
You can upload PNG and JPG/JPEG images. For best results, use a PNG with a transparent background — this gives you a clean watermark without a visible rectangular box around your logo. The tool automatically handles both formats.
Will the watermark appear on every page of my PDF?
Yes, the watermark is applied to all pages in your document. This ensures consistent branding or labeling throughout the entire file. If you use Tile mode, the watermark repeats across each page for full coverage.
Is the watermark permanent? Can it be removed later?
The watermark is baked into the PDF content, so it cannot be easily removed by the recipient using standard PDF viewers. However, sophisticated PDF editing software with advanced object‑removal features could potentially strip it. For maximum protection, use a tiled, semi‑transparent watermark that covers the entire page — these are significantly harder to remove.
Does this tool work on iPhone and Android?
Yes! The watermark tool is fully responsive and works on all modern devices — iPhone, iPad, Android phones, and tablets. The preview canvas supports touch dragging, so you can position the watermark with your finger. All controls adapt to smaller screens for easy use on the go.
Are my PDF files safe and private?
Absolutely. All processing happens inside your browser using JavaScript. Your PDF never leaves your device — it is never uploaded to any server. You can verify this by disconnecting your internet after loading the page: the tool continues to work perfectly. No copies of your file are ever stored, viewed, or transmitted.
Can I add a watermark to a password‑protected PDF?
No. PDFcone cannot open encrypted or password‑protected PDFs. You'll need to remove the password first using your PDF reader or the software that originally created the file, then upload the unlocked version to add a watermark.
Is there a limit on file size or number of pages?
Files up to 50 MB are supported. There's no hard page limit, but very large documents (hundreds of pages) may take a moment to process because all work is done locally on your device. For most everyday PDFs, processing is instant.
Also try our other privacy‑first tools: Merge PDF · Compress PDF · Crop PDF · Split PDF · PDF to Word · JPG to PDF · PDF to JPG