在线处理 · 文件自动清理

Remove Watermark

Remove text watermarks, image watermarks, and graphic watermarks online, including scanned PDFs, with candidate preview and auto-cleaned files

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Desktop app

Download Dundun Office desktop

Better for large files, batch PDF watermark removal, and desktop follow-up work.

Mac

For larger PDFs and batch tasks on macOS.

DownloadVersion 4.0.1

Windows

For long documents and batch PDF watermark removal on Windows.

DownloadVersion 4.0.1

PDF Watermark Removal FAQ

These FAQs cover online PDF watermark removal, scanned PDF cleanup, large-file handling, and automatic file cleanup after processing.

What watermark types can this online PDF watermark remover handle?

It can detect and remove common text watermarks, image watermarks, graphic watermarks, and some scanned-document watermarks. Actual results still depend on the PDF structure and how the watermark was embedded.

Why analyze one page before removing watermarks from the whole PDF?

Analyzing a selected page first helps identify the watermark type and candidate objects faster, then expands matching repeated watermarks across the full PDF for better precision and speed.

Why are some PDF watermarks hard to remove?

Some PDFs flatten the watermark and page content into one scanned image, or place a watermark over body text with a very similar color. In those cases, results depend on the PDF structure, page quality, and watermark implementation.

How long are uploaded PDF files kept?

Processing is online rather than fully local in the browser. Files are auto-cleaned after processing according to site policy, which helps balance efficiency and privacy.

What is the online PDF watermark removal workflow?

Upload the PDF, choose a page that contains the watermark, analyze text, image, and graphic candidates, select the objects to remove, process the full PDF, then review the preview before downloading.

Does this support batch PDF watermark removal?

The online page is designed for quickly processing one PDF at a time. For frequent work, large files, or batch PDF watermark removal, membership features or the desktop PDF toolbox are better fits.

What is the difference between free and member watermark removal?

The free tier is useful for small files and common watermarks. Membership unlocks larger files, priority processing, and stronger removal modes for scanned PDFs, mixed watermarks, and complex documents.