Add Watermark to PDF
Apply a text watermark to every page of your PDF document. Customize the text, color, and opacity. All processing is done securely in your browser.
- Select PDF: Click the button to upload your PDF document.
- Customize Watermark: Enter your desired text and adjust the font size, color, and opacity using the controls.
- Apply & Download: Click the "Apply Watermark & Download" button. The tool will process the file and your browser will automatically download the new, watermarked PDF.
This tool uses the `pdf-lib` JavaScript library to modify PDF documents directly in your browser. When you upload a file and set your options, the tool reads the PDF, iterates through each page, and draws your text diagonally across the center. This entire process happens on your local machine, and your files are never sent to a server.
Can I add an image as a watermark?
Currently, this tool only supports text-based watermarks. Image watermark support may be added in a future update.
Can this watermark be easily removed?
A watermark added this way becomes part of the page's content. While it cannot be removed by a simple click, a user with advanced PDF editing software could potentially remove it. For higher security, consider using a tool that flattens the PDF or converts pages to images after watermarking.
Is this process secure and private?
Absolutely. Your files and the watermark text you enter are never uploaded or transmitted. All processing is performed on your own computer by your browser.
Tool guide
How to Use the Add Watermark to PDF
This guide explains what the tool does, where it fits into a real workflow, and how to use it confidently. It gives first-time visitors a clear written explanation of the page before they start working with their own text, files, or data.
What does this tool do?
The Add Watermark to PDF helps you add a text watermark to every page of your pdf file. It is designed for quick, focused work: paste or choose your input, adjust the available options, and copy or download the result when you are done. The page is useful for writers, developers, students, analysts, marketers, and anyone who needs a small conversion job finished without installing another app.
Most tools on Text-Converters.com run directly in your browser, which keeps the experience fast and private. When a tool requires special processing, the page is built to keep the workflow clear so you know what is happening before you use it.
How to use this tool
- Open the Add Watermark to PDF page and read the options available near the input area.
- Paste text, upload a file, or enter the values that match the task you want to complete.
- Choose any formatting, conversion, privacy, or output options shown by the tool.
- Run the conversion and review the result before copying, downloading, or sharing it.
- Clear the input when you are finished, especially if you worked with private content.
When would you use this?
- A freelancer preparing documents for a client without opening a heavy PDF editor.
- An office user making a small PDF change before sending a file by email or uploading it to a portal.
- A student or researcher who needs a quick add watermark to pdf without installing desktop software.
- A remote worker who wants to clean up copied content before pasting it into a document, spreadsheet, CMS, or chat message.
Frequently asked questions
Is the Add Watermark to PDF free?
Yes. The tool is free to use, with no account, subscription, or payment required.
Do I need to install anything?
No. It works in your browser, so you can use it from a laptop, tablet, or phone.
Is my data stored?
The site is designed around privacy-first browser processing wherever possible. We do not ask you to create an account to use the tool.
Can I use the result commercially?
Yes, but always review the output before relying on it for important, legal, financial, medical, or production work.