Add a text or image watermark to all pages of your PDF directly in the browser. Customise text, opacity, angle and position. No server upload, 100% local processing.
Drag the PDF to watermark here
or drag the file here
or open the full PDF editor for annotations, signatures and much more.
Drag the PDF or click to select it. The file stays on your device.
Type the watermark text (e.g. "DRAFT", "CONFIDENTIAL") and adjust opacity, size and angle.
Click "Add watermark" and download the PDF with the watermark embedded on every page.
Everything runs in the browser via WebAssembly. Your PDF is never sent to any server.
No upload, no queue. Processing is local and completes in seconds even for large files.
No required account, no credit card, no watermark. Truly free.
PC, Mac, iPhone, Android — just a modern browser. Safari, Chrome, Firefox or Edge.
Adding a watermark to a PDF overlays a semi-transparent text or image on all pages of the document. Watermarks are used to indicate document confidentiality ("CONFIDENTIAL", "DRAFT"), to mark distributed copies with the recipient's name, or to add a company logo.
OnlinePdfEditor lets you customise the watermark text, size, angle, opacity and position. The watermark is applied as a visual layer on each page and embedded in the exported PDF.
The process happens in the browser without transmitting the document to external servers. The text watermark is selectable in the resulting PDF.
Yes. You can upload a PNG or JPG image (ideally with a transparent background) to use as a watermark instead of text.
Yes. By default the watermark is applied to every page of the document. You can also limit it to a page range.
Yes. The opacity slider lets you choose how visible the watermark is, from nearly invisible to fully opaque.
No. Everything happens in the browser. The file never leaves your device.
The watermark is embedded in the PDF as a graphic element. It is not removable with standard tools once applied.
Yes. It works on any modern browser on iOS and Android.
Free, in the browser, nothing to install. Upload your PDF and go.
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