Add a watermark to a PDF — free

Stamp text like “Confidential” or a logo image across your PDF, then flatten and download — all in your browser.

Open the PDF editorBrowse all tools
  • 100% in your browser
  • No upload
  • Free — no sign-up
  • No watermark

How to add a watermark to a PDF online

Mark a document as “Draft”, “Confidential” or brand it with your logo. EditMyStuff lets you add text or an image over your PDF pages, adjust the size, opacity and position, then flatten it into the file so the watermark can’t be toggled off. It all runs in your browser — no upload and no watermark from us on top of yours.

How to watermark a PDF

  1. Open your PDF in the editor — it loads on your device.
  2. Add your watermark — insert text (like “Confidential”) or an image/logo.
  3. Style it — set the size, colour, opacity and position, and repeat it across pages.
  4. Flatten and download — export a PDF with the watermark baked in, no sign-up.

Why watermark PDFs here

  • Text or image. Use a word like “Draft” or drop in a logo image as the watermark.
  • Baked in. Flattening writes the watermark into the file so it stays put in any reader.
  • Private. Your document and logo never leave your browser.
  • No branding from us. Free with no sign-up — the only mark on the file is the one you add.

Frequently asked questions

Is adding a watermark free?

Yes — free, with no account, and we never add our own watermark to your file.

Can I use my logo as a watermark?

Yes. Add an image such as a PNG logo, set its opacity, and place it where you want.

Will the watermark stay on the file?

Yes. When you flatten and export, the watermark is written into the PDF so it can’t simply be removed by toggling a layer.

Are my files uploaded?

No. The watermark is added in your browser on your device.

Can I put the watermark on every page?

Yes. Repeat the watermark across all pages before exporting.

Related free tools

PDF EditorDo all of these in one place.Split PDFSeparate pages or ranges into new files.Sign PDFDraw or type a signature and place it.OCR PDFMake a scanned PDF searchable and selectable.Rotate PDFFix sideways or upside-down pages.

Helpful guides