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PDF 添加水印Add Watermark to PDF

给 PDF 全部或指定页面添加文字水印,居中或铺满,支持中文。Add a text watermark (centred or tiled, any language) to all or selected PDF pages.

理念:Idea: 文件发出去,用途写清楚,心里更踏实。Send it out marked for its purpose, with peace of mind.

解决:Solves: 加上文字水印,标明用途、防止乱传Mark documents with a text watermark

适合:For: 对外发送合同、资料的人Anyone sending out documents

可用Available在浏览器中运行Runs in your browser
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在你的设备上本地处理。这里输入的内容不会上传。Processed locally on your device. Nothing you enter here is uploaded.

使用方法How to use

  1. 1选择 PDF 并输入水印文字。Choose a PDF and type the watermark text.
  2. 2选择排列方式、角度、大小、颜色和透明度。Pick the layout, angle, size, colour and opacity.
  3. 3点「添加水印」,下载结果。Press Add watermark and download the result.

说明Good to know

  • 仅支持文字水印。水印以图片形式盖在页面上,所以中文等任何文字都能显示,但水印文字本身无法被选中。Text only. The watermark is drawn as a picture on top of the page, so Chinese and other languages work, but the watermark text itself cannot be selected.
  • 可见水印只能劝阻随手复制,不是安全防护。A visible watermark deters casual copying; it is not a security feature.
  • 上限 100 MB。Limit 100 MB.
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    给 PDF 添加页码:位置、样式、起始数字、字号都可调。Stamp page numbers on a PDF: position, style, start number, font size.

    可用AvailablePDF 与文档PDF & Documents
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    重新压缩 PDF 内嵌的 JPEG 图片来减小体积,文字保持清晰、可选中。Shrink a PDF by re-compressing the JPEG pictures inside it. Text stays sharp and selectable.

    可用AvailablePDF 与文档PDF & Documents
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    可用AvailablePDF 与文档PDF & Documents
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    可用AvailablePDF 与文档PDF & Documents