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PDF Водяной знак

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

PDF Водяной знак is a free online pdf-инструменты 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.

Вся обработка PDF выполняется полностью в вашем браузере — без загрузки на какой-либо сервер. На базе WebAssembly и современных API браузера обеспечивает скорость настольных приложений, сохраняя конфиденциальность документов.

How to use

  1. 1 Откройте страницу инструмента PDF Водяной знак.
  2. 2 Вставьте текст, URL или данные в область ввода.
  3. 3 Выберите режим работы и параметры.
  4. 4 Запустите инструмент и просмотрите результат.
  5. 5 Скопируйте или скачайте результат.

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 Водяной знак: 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.

Часто задаваемые вопросы

Этот инструмент бесплатный?

Да, полностью бесплатный и без регистрации.

Можно использовать на мобильном?

Да, работает в мобильных браузерах с поддержкой касания.

К какой категории он относится?

PDF-инструменты

Загружается ли мой PDF на сервер во время обработки?

Нет. Вся обработка PDF выполняется локально в вашем браузере. Ваши файлы никогда не покидают ваше устройство.

Какой размер PDF-файла поддерживается?

Поскольку обработка выполняется локально в вашем браузере, размер зависит от памяти вашего устройства. PDF до 100 МБ обычно обрабатываются без проблем.

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 Водяной знак safe? Is my data uploaded or stored?

Yes. PDF Водяной знак 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.

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📖 How-To Guides

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