關於此工具
在 PDF 上蓋上文字或圖像浮水印。
為 PDF 加入浮水印
編輯在 PDF 上蓋上文字或圖像浮水印。
將 PDF 拖曳到此處
處理 ≤ 50.0 MB
架構層面的隱私保護
所有處理都在您的瀏覽器中進行。您的 PDF 永遠不會上傳到我們的伺服器。無需帳戶，無使用限制。
工作原理
- 1選擇 PDF — 永遠不離開你的裝置
- 2按需配置工具
- 3結果儲存到下載
Frequently asked questions
Is this PDF watermark tool free?
Yes, completely free with no usage limits and no watermark from us.
Can I add an image watermark?
Text watermarks are supported now. Image watermarks coming in a future update.
Will my PDF be uploaded to a server?
No. Watermark addition runs in your browser.
Can I customize opacity and position?
Yes, you can control opacity (10-100%), rotation (-90° to +90°), and choose from 5 positions (center, top-left, top-right, bottom-left, bottom-right).
Does it work offline?
Yes, after the first visit.