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logo to PDF files in your browser. Adjust opacity, rotation, tiling, and page ranges. Fully local — no uploads.","Upload PDF","Drop a PDF here, or click to select","Change","Watermark Text","e.g. CONFIDENTIAL, DRAFT, INTERNAL","Font Size","Opacity","Color","Rotation","Mode","Tiled","Single","Spacing","Position","Scale","Text Watermark","Image Watermark","Watermark Image","Page Range","All pages","First page only","Custom","e.g. 1-3,5","Use pages, ranges, and commas — e.g. 1-3,5,8-10","Will apply to {count} \u002F {total} pages","Invalid page range. Try formats like 1-3,5","A page number is outside this document","Specify at least one valid page","Download","Exporting…","Processing page {current}\u002F{total}…","Watermark failed. Try an unencrypted PDF.","Could not open this PDF — it may be encrypted or damaged","Page {current} \u002F {total}","Top Left","Top Center","Top Right","Center Left","Center","Center Right","Bottom Left","Bottom Center","Bottom Right","Does it support Chinese \u002F CJK watermarks?","Yes. Text watermarks are drawn with the browser Canvas API, then embedded as images — Chinese, Japanese, and other scripts work without uploading font files.","Are PDF files uploaded to a server?","No. Parsing, preview, and watermarking all run locally in your browser. Files never leave your device.","Can I watermark only some pages?","Yes. Choose all pages, the first page only, or a custom range like 1-3,5. Preview any page; export writes only the selected pages.","Can I still select and copy text after watermarking?","Usually yes. The tool overlays a semi-transparent layer instead of rasterizing whole pages, so the original text layer typically remains searchable and selectable.",{"zh":154,"en":171},[155,159,163,167],{"icon":156,"title":157,"desc":158},"lucide:languages","中文水印无压力","「机密」「草稿」等中文直接可用，无需上传字体",{"icon":160,"title":161,"desc":162},"lucide:eye","改参数即预览","透明度、旋转、平铺调整后实时看到效果",{"icon":164,"title":165,"desc":166},"lucide:list-ordered","按页范围应用","全部、仅首页或自定义 1-3,5，精确控制",{"icon":168,"title":169,"desc":170},"lucide:shield","本地隐私处理","PDF 不上传服务器，适合合同与内部材料",[172,175,178,181],{"icon":156,"title":173,"desc":174},"CJK Text Ready","Chinese Draft \u002F Confidential marks work without font uploads",{"icon":160,"title":176,"desc":177},"Live Preview","See opacity, rotation, and tiling updates instantly",{"icon":164,"title":179,"desc":180},"Page Ranges","All pages, first page, or custom ranges like 1-3,5",{"icon":168,"title":182,"desc":183},"Private by Design","PDFs stay on your device — ideal for contracts and internals",{"zh":185,"en":197},[186,189,193],{"icon":187,"title":49,"desc":188},"lucide:upload","拖放或选择需要加水印的 PDF 文件",{"icon":190,"title":191,"desc":192},"lucide:stamp","设置水印","输入「机密 \u002F 草稿」等文字或上传 Logo，调整样式与页范围",{"icon":194,"title":195,"desc":196},"lucide:download","下载结果","预览满意后一键下载带水印的 PDF",[198,200,203],{"icon":187,"title":102,"desc":199},"Drop or select the PDF you want to stamp",{"icon":190,"title":201,"desc":202},"Configure Watermark","Enter Draft \u002F Confidential text or a logo; set style and pages",{"icon":194,"title":130,"desc":204},"Preview, then download the watermarked PDF",{"zh":206,"en":230},[207,211,215,219,223,226],{"icon":208,"title":209,"desc":210},"lucide:file-lock","合同标「机密」","外发或会前传阅的合同 PDF 加上机密水印，降低误传风险",{"icon":212,"title":213,"desc":214},"lucide:pencil","报告标「草稿」","未定稿方案、周报加上草稿水印，避免被当成终稿引用",{"icon":216,"title":217,"desc":218},"lucide:building-2","内部材料控传","培训课件、制度文档加「仅供内部」平铺水印",{"icon":220,"title":221,"desc":222},"lucide:badge-check","审稿版本区分","同一文档多版审阅时用不同水印区分版本状态",{"icon":190,"title":224,"desc":225},"Logo 品牌水印","对外资料角落加公司 Logo，兼顾标识与可读性",{"icon":227,"title":228,"desc":229},"lucide:presentation","课件防截图滥用","课程讲义 PDF 平铺署名水印，减少二次传播",[231,234,237,240,243,246],{"icon":208,"title":232,"desc":233},"Mark Contracts Confidential","Stamp confidential marks before sharing agreements for review",{"icon":212,"title":235,"desc":236},"Label Draft Reports","Keep unfinished decks and memos clearly marked as drafts",{"icon":216,"title":238,"desc":239},"Control Internal Docs","Tile “Internal Only” across policies and training packs",{"icon":220,"title":241,"desc":242},"Separate Review Versions","Use different watermarks to show review status across versions",{"icon":190,"title":244,"desc":245},"Brand with a Logo","Place a company logo watermark without burying the content",{"icon":227,"title":247,"desc":248},"Protect Course Packs","Tile attribution across lecture PDFs to discourage resharing",{"zh":250,"en":251},"\u003Ch2>2026 年为什么需要给 PDF 加水印？\u003C\u002Fh2>\n\u003Cp>合同、方案、课件在外发或会前传阅时，经常需要一眼能看出「这是机密 \u002F 草稿 \u002F 仅供内部」。桌面软件流程重、在线工具又担心上传泄露——MeTool 的 \u003Cstrong>PDF 加水印\u003C\u002Fstrong>在浏览器本地完成叠加，支持中文文字水印与 Logo，并可按页范围精确控制。\u003C\u002Fp>\n\u003Ch2>中文「机密 \u002F 草稿」水印怎么做才稳？\u003C\u002Fh2>\n\u003Cp>许多前端 PDF 库的标准字体只覆盖拉丁字符，直接 \u003Ccode>drawText\u003C\u002Fcode> 中文会失败或变成方框。本工具把水印文字先画在 Canvas 上（使用系统中文字体），再以透明 PNG 嵌入每一页：对「机密」「草稿」「内部资料」这类短标注特别合适，也无需打包数 MB 的 CJK 字体。\u003C\u002Fp>\n\u003Ch2>常见使用场景\u003C\u002Fh2>\n\u003Ch3>合同与协议外发前\u003C\u002Fh3>\n\u003Cp>在会签或律师审阅版本上平铺半透明「机密」，降低截图外传后被误当成公开稿的风险。\u003C\u002Fp>\n\u003Ch3>方案与周报的草稿态\u003C\u002Fh3>\n\u003Cp>未定稿内容标「草稿」，避免被下游当成终版引用或对外报价。\u003C\u002Fp>\n\u003Ch3>培训课件与制度文档\u003C\u002Fh3>\n\u003Cp>「仅供内部」平铺水印，在可读性可接受的前提下提高二次传播成本。\u003C\u002Fp>\n\u003Ch2>页范围与实时预览\u003C\u002Fh2>\n\u003Cp>支持全部页面、仅第 1 页，或自定义如 \u003Ccode>1-3,5\u003C\u002Fcode>。右侧预览与导出共用同一套位置、旋转与平铺算法，改透明度或角度即可即时看到效果，再下载带水印的 PDF。\u003C\u002Fp>\n\u003Ch2>常见问题\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Q：加水印后正文还能选中复制吗？\u003C\u002Fstrong>\u003Cbr>\nA：通常可以。工具是叠加半透明层，而不是把整页栅格化；原文文字层一般仍可搜索与复制。\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Q：加密 PDF 能处理吗？\u003C\u002Fstrong>\u003Cbr>\nA：首版不支持加密文档。请先在本地解除保护后再上传。\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Q：文件会上传服务器吗？\u003C\u002Fstrong>\u003Cbr>\nA：不会。解析、预览与写入都在浏览器本地完成。\u003C\u002Fp>\n","\u003Ch2>Why add a watermark to a PDF in 2026?\u003C\u002Fh2>\n\u003Cp>Contracts, drafts, and course packs often need an obvious \u003Cstrong>Confidential \u002F Draft \u002F Internal\u003C\u002Fstrong> mark before they leave your device. Desktop apps are heavy; many online tools upload your file. MeTool’s \u003Cstrong>PDF watermark\u003C\u002Fstrong> tool stamps text or a logo entirely in the browser, with live preview and page-range control.\u003C\u002Fp>\n\u003Ch2>Reliable CJK “Confidential \u002F Draft” marks\u003C\u002Fh2>\n\u003Cp>Standard PDF fonts cover Latin glyphs only, so drawing Chinese with \u003Ccode>drawText\u003C\u002Fcode> often fails. This tool renders watermark text on a Canvas (using system CJK fonts), then embeds a transparent PNG on each page. Short labels like 机密 \u002F 草稿 work without shipping multi‑megabyte font files.\u003C\u002Fp>\n\u003Ch2>Typical scenarios\u003C\u002Fh2>\n\u003Ch3>Contracts before external review\u003C\u002Fh3>\n\u003Cp>Tile a light “Confidential” mark so screenshots and forwarded copies stay clearly marked.\u003C\u002Fp>\n\u003Ch3>Draft reports and proposals\u003C\u002Fh3>\n\u003Cp>Label unfinished decks and memos as Draft so they are not quoted as final.\u003C\u002Fp>\n\u003Ch3>Internal training and policies\u003C\u002Fh3>\n\u003Cp>An “Internal Only” tile raises the cost of casual resharing without burying the content.\u003C\u002Fp>\n\u003Ch2>Page ranges and live preview\u003C\u002Fh2>\n\u003Cp>Apply to all pages, the first page only, or custom ranges such as \u003Ccode>1-3,5\u003C\u002Fcode>. Preview and export share the same geometry for position, rotation, and tiling—adjust opacity and see the result before download.\u003C\u002Fp>\n\u003Ch2>FAQ\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Q: Can I still select text after watermarking?\u003C\u002Fstrong>\u003Cbr>\nA: Usually yes. The tool overlays a semi-transparent layer instead of rasterizing whole pages.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Q: What about encrypted PDFs?\u003C\u002Fstrong>\u003Cbr>\nA: Not supported in the first version. 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