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Add a diagonal text watermark like "CONFIDENTIAL" or "DRAFT" to every page of your PDF. Control the text and opacity to suit your needs.
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Accepted: .pdf
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Select the document you want to add a watermark to.
Type the watermark text and set its opacity. One diagonal text mark is stamped on every page.
Download your watermarked PDF, applied across every page.
A watermark does two jobs at once, it marks a document as belonging to someone or something specific, and it discourages that document from being copied or shared as if it were unfinished or unofficial. Adding one across every page of a PDF used to mean editing the source file page by page. This tool applies it automatically across the whole document in one step. This page explains how our Watermark PDF tool works and when watermarking makes sense.
Watermarks serve a few different purposes depending on the situation. A company logo watermarked faintly across a proposal reinforces branding on every page without interfering with the content. The word draft stamped diagonally across a report makes it immediately clear the document is not the final version, avoiding confusion if it gets shared before it should be. A confidential or internal use only mark on sensitive business documents signals to anyone who receives it, intentionally or not, that the content should not be distributed further. In each case, the watermark communicates something about the document at a glance, without needing to read a cover page or footer note.
You add a text watermark, such as a word or short phrase. There is no image watermark option. The tool lets you control the transparency with the opacity slider, while the mark itself is one diagonal text stamp in a fixed size and position on every page. Once configured, the watermark is applied consistently across every page of the document in a single step, rather than needing to be placed manually page by page.
Photographers and designers watermark a portfolio PDF with their studio name before sharing sample work publicly. Writers watermark an early draft of a manuscript with the word draft before sending it to an editor for feedback. Businesses watermark internal financial reports with confidential to make clear the document should stay within the company. Real estate agents watermark listing sheets with their agency logo for consistent branding across every property packet they send out. Educators watermark course materials with their institution's name to discourage unauthorized redistribution.
How strong a watermark should be depends entirely on its purpose. A bold, high opacity watermark placed diagonally across the center of the page is best for messages like draft or confidential, where the goal is to make sure it cannot be missed. A smaller, low opacity watermark placed in a corner works better for branding purposes, like a logo, where the goal is a professional touch rather than an obvious stamp covering the content. The tool supports both approaches through adjustable size and transparency settings.
Your files are never sent to a server. Processing happens in your browser, so nothing is uploaded, shared, or stored elsewhere.
Anyone sharing original work before it is officially published or sold has a reason to think about protecting it, even informally. Photographers sharing sample images with a potential client, writers circulating an early manuscript for feedback, and designers posting concept work for a portfolio review all risk that work being copied or reused without credit once it leaves their hands. A visible watermark does not make copying technically impossible, but it does make casual reuse obvious and traceable, which is often enough to discourage the kind of low effort copying that original creators run into most often when sharing work publicly before it is finalized.
Some organizations use watermarks as a visual signal within an internal approval workflow, marking a document as pending review, approved, or superseded so that anyone who opens it immediately understands its current status without needing to check a separate tracking system. This is particularly useful for documents that go through several drafts before being finalized, where an outdated version accidentally being treated as current can cause real confusion. A clear watermark stating draft or pending approval prevents that kind of mistake at a glance.
What to expect from the result: the same text is stamped diagonally across every page in a fixed size and position, with only the opacity adjustable. There is no logo upload and no per page placement.
Yes, there is no cost, no extra watermark added by us, and no account required.
No. This tool stamps text only. There is no image or logo upload. Type the text you want and set its opacity.
Yes, once configured, it is applied consistently across the entire document in one step.
You can set the opacity with the slider. The text is fixed as one diagonal mark per page in a single size and position, so size and position cannot be changed.
Your file is processed in your browser and is never sent to a server, so nothing is uploaded, shared, or stored elsewhere.
You would need to start from the original, unwatermarked file, since the watermark becomes part of the new document once applied.
Use Edit PDF if you need to add other text or notes alongside the watermark. Use Merge PDF if the watermarked document needs to be combined with other files. Use Compress PDF if the finished file has grown too large to send easily.
Adding a watermark takes a moment but communicates something important about a document at a glance, whether that is a brand, a status, or a level of confidentiality. This tool applies it cleanly across every page in one step, without editing the source file by hand.