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PDF 워터마크

Add text or image watermarks to PDF pages. Free online tool to brand and protect documents in your browser.

PDF 워터마크 is a free online pdf 도구 tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.

모든 PDF 처리는 브라우저에서 완전히 실행됩니다. 서버로 파일이 업로드되지 않습니다. WebAssembly와 최신 브라우저 API로 데스크톱 수준의 속도를 제공하며 문서의 프라이버시를 보장합니다.

How to use

  1. 1 PDF 워터마크 도구 페이지를 엽니다.
  2. 2 텍스트, URL 또는 데이터를 입력 영역에 붙여넣으세요.
  3. 3 작업 모드와 매개변수를 선택하세요.
  4. 4 도구를 실행하고 결과를 확인합니다.
  5. 5 결과를 복사하거나 다운로드하세요.

Why we built this tool

We noticed most online PDF tools require uploading sensitive documents to remote servers. Since privacy is our core principle, we built our PDF suite to process everything locally in your browser — your files never leave your device.

About PDF 워터마크: what you should know

Researchers and students compiling readings and assignments into a single file. Gathering papers, slides, and notes into one PDF makes them easier to carry, annotate, and submit — and it all happens on your device.

Key features

  • Zero Server Upload — All PDF processing runs locally in your browser using pdf-lib and pdf.js. Confidential contracts and personal documents never touch an external server.
  • Multi-File Support — Upload one or several PDF files and process them together. Drag to reorder if needed — the tool handles batches without choking on large documents.
  • Instant Download Output — The processed PDF is ready to download immediately after the operation completes. No email delivery, no waiting in a processing queue.

Common use cases

  • Reducing PDF Size for Email — Email providers reject attachments over a size limit. Compress your PDF so it fits in an inbox without losing the content your recipient needs.
  • Organizing Documents for Submission — Whether it is a job application, a tax filing, or a client deliverable, combine or split PDFs so they meet the submission requirements exactly.

자주 묻는 질문

이 도구는 무료인가요?

네, 가입 없이 완전 무료입니다.

모바일에서 사용할 수 있나요?

네, 모바일 브라우저에서 터치를 지원합니다.

어떤 카테고리에 속하나요?

PDF 도구

PDF 처리 중에 파일이 서버로 업로드되나요?

아니요. 모든 PDF 처리는 브라우저에서 로컬로 실행됩니다. 파일이 기기를 떠나지 않습니다.

어떤 크기의 PDF 파일을 지원하나요?

브라우저에서 로컬로 처리되므로 파일 크기는 기기 메모리에 따라 다릅니다. 일반적으로 100MB 이하의 PDF는 원활하게 처리됩니다.

Can I merge PDFs without losing quality?

Yes. ToolPure uses lossless merging — the output PDF preserves original resolution, color depth, and embedded fonts. All processing happens locally in your browser, so your documents never leave your device.

How many PDF files can I process at once?

You can merge up to 50 PDF files in a single operation, with each file up to 2GB. Files are processed in the order you add them, and you can drag to reorder before merging.

What PDF standards and versions are supported?

The tools support PDF versions 1.0 through 2.0 (ISO 32000-2), including PDF/A archival standard. Encrypted PDFs require the correct password for processing.

Is PDF 워터마크 safe? Is my data uploaded or stored?

Yes. PDF 워터마크 is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.

🔒 Privacy & Security:All processing happens locally in your browser. Files are never uploaded or stored.

🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.

📖 How-To Guides

💸 Paid Tool Alternatives

PDF 워터마크 is a free alternative to the following paid tools — see the full comparison:

Smallpdf alternative →