Watermark PDF
Add a text watermark to PDF online. Adjustable font size, opacity, rotation, auto-tiled across all pages. Processed 100% in your browser, no upload.
All processing happens locally in your browser — nothing is uploaded
拖拽 PDF 文件到这里，或点击选择
浏览器本地处理，文件不上传服务器
需要更多功能？试试 PDF 工具箱完整版 （含合并、拆分、加密、签名、提取等 11 项功能）
PDF Tools · Related Tools
View all 13 tools → PDF Toolbox
Merge / split / rotate / delete / watermark / number / encrypt / convert / sign / extract
Merge PDF
Combine multiple PDFs into one
Split PDF
Split PDF by page range
Rotate PDF
Rotate single or all pages
Delete PDF Pages
Remove selected pages
Add Page Numbers
Left / center / right page numbers