Add PDF Watermark
Stamp a text watermark on every page of a PDF.
工具代码会在浏览器中处理所选文件和输入内容，不会将其提交给 TOOLGRID 的处理接口。 TOOLGRID 只衡量工具使用情况，不记录你输入的内容。
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浏览器内运行这个工具能做什么
Select one PDF, enter a text watermark with color, position, opacity, and font size controls, then download the marked file locally.
Processing runs in the current browser tab, so the practical limit is your device memory and browser support rather than a server quota.
这个工具可以完成什么
Add a CONFIDENTIAL or DRAFT watermark to documents before sharing for review to prevent premature use.
Add a company name, client label, or review status text watermark to reports and proposals before sending them onward.
Watermark portfolio samples or preview documents to discourage unauthorized use.
依赖结果前需要检查什么
- Performance and maximum practical input size depend on browser memory, device speed, and the structure of the input.
- Review the generated result before replacing or publishing an original file.
如何使用
- 1
Add the single PDF file you want to watermark.
- 2
Enter the watermark text, then choose color, position, opacity, and font size.
- 3
Run Add Watermark, then open the downloaded PDF locally to verify placement and readability.
使用场景
Add a CONFIDENTIAL or DRAFT watermark to documents before sharing for review to prevent premature use.
Add a company name, client label, or review status text watermark to reports and proposals before sending them onward.
Watermark portfolio samples or preview documents to discourage unauthorized use.
Stamp ARCHIVE or SUPERSEDED on older document versions to prevent confusion with current versions.
使用技巧
Diagonal watermarks (45°) overlap more content and are more resistant to simple cropping or removal attempts.
A 20–35% opacity watermark is visible without obscuring the document content underneath.
常见问题
Can the watermark be removed by recipients?
Text watermarks added by this tool are embedded in the PDF content stream, making them difficult but not impossible to remove with specialized tools.
Are my files processed locally?
Watermarking happens in your browser. Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint.
Can I watermark every page?
Yes. The watermark is applied to all pages by default.
What font does the watermark use?
Helvetica (the standard built-in PDF font). No font picker is available in this tool — for custom typography in a watermark, render the watermark text as an image first and stamp it via desktop PDF software.
下一步常用工具
如果还需要校验、转换或复用结果，可以继续打开相近的浏览器本地工具。