透かし一括削除
PDFの内部描画オペレーターを走査し、本文のレイアウトを崩さずにテキストや画像（XObject）の透かしを物理的に除去します。
透かし（ウォーターマーク）付きPDFファイルをアップロード
このツールについて
The Batch Watermark Remover is a state-of-the-art PDF sanitizer that physically cleanses documents.
Generic watermark removers usually just overlay white blocks or distort document spacing. This tool utilizes a robust Content Stream Purge technique.
It parses the low-level rendering operators of each page, identifies specific watermark string commands (e.g. "Confidential", "DRAFT") or background image objects, and physically deletes or overwrites them. The watermarks disappear completely, preserving the original formatting and vector quality.
使用方法
Upload watermarked file
Provide the PDF document showing commercial logos or security labels.
Define target watermark
Input the exact string to delete, or toggle translucent XObject image cleanup.
Run physical purge
Click execute to scrub the content operators with high fidelity.
使用例
Archiving corporate assets
Remove expired "Confidential" or "Draft" watermarks for general public distribution.
Clearing background clutter
Scrub heavy background pictures that distract readers from scanning text.
Document reusing
Cleanse old page footer branding elements to apply new corporate templates easily.
よくある質問
Can the purged watermarks be recovered?
No. Unlike visual masks, we rewrite the page binary stream to erase the operators, leaving no traces.
Does it support complex gradients?
If the watermark is stored as a separate text node or image XObject, the tool can isolate and physically wipe it.
Will it modify normal page text?
No. The scrubbing engine only target operators matching the specified watermark signature; regular text remains untouched.