Add text or image watermarks to PDF files. Protect your documents.
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More about the Add Watermark to PDF
A contract draft or a confidential report often needs to be marked clearly across every single page before it goes anywhere outside a small group, not just the first page, since a recipient screenshotting or forwarding just one page should still see it's a draft, not a final version, and applying that consistently across a hundred-page document by hand isn't realistic. This tool adds a text or image watermark across every page of a PDF at once, whether that's a diagonal "DRAFT" stamp, a company logo, or a "CONFIDENTIAL" marking, without disrupting the document's existing selectable text. Useful for stamping "CONFIDENTIAL" across an entire document before sharing it externally, marking every page of a draft contract so an out-of-context screenshot still reads as unfinished, or branding a document with a logo watermark before distributing it publicly.
Add text or image watermarks to PDF files. Protect your documents. The Add Watermark to PDF is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Add Watermark to PDF?
Open the Add Watermark to PDF on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Add Watermark to PDF free to use?
Yes. The Add Watermark to PDF is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Add Watermark to PDF safe and private?
Yes. The Add Watermark to PDF processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Add Watermark to PDF produce?
The Add Watermark to PDF produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Add Watermark to PDF work on mobile devices?
Yes. The Add Watermark to PDF is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Are PDFs processed securely in the Add Watermark to PDF?
Yes. The Add Watermark to PDF processes PDFs entirely in your browser using client-side PDF libraries. Your files are never uploaded to a server, so you can safely work with contracts, invoices, and other confidential documents.
Can the Add Watermark to PDF handle password-protected PDFs?
The Add Watermark to PDF can open and process PDFs that do not have encryption restrictions. Password-protected or encrypted PDFs that require a decryption key may not be readable by client-side libraries. If you need to work with a locked PDF, unlock it first using the file owner's credentials.
Can I use the Add Watermark to PDF offline?
Once the page has loaded, the Add Watermark to PDF continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.