PDF黒塗り

個人情報や機密データを完全消去して不可逆マスキング。下層テキストも確実に除去して漏洩防止。

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PDF黒塗り

単に黒い四角形を重ねるだけではコピーで元の文字が読まれてしまいます。DCPIXELは下層のテキストデータ自体を完全に物理消去します。

🔐 100% Private — Client-Side Execution

All processing happens inside your browser using WebAssembly and HTML5 Canvas. Zero file uploads, zero server tracking. Compliant with LGPD & GDPR.

よくある質問 (FAQ)

Is the redaction actually permanent?

Yes. The black box is drawn directly into the PDF page content before saving — there is no hidden layer or original data left underneath in the exported file.

Can I redact more than one area per page?

Yes, draw as many boxes as you need on each page before saving.

Does this work on scanned PDFs?

Yes — redaction works on any page regardless of whether it contains real text or a scanned image.

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PDF黒塗り

PDF黒塗り

よくある質問 (FAQ)

Score 99+ on Google PageSpeed Insights

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