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PDF脱敏涂黑

彻底抹除PDF中的个人隐私、身份证号与商业机密。真正物理删除底层文本，不可逆防泄漏。

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PDF脱敏涂黑

普通的黑色遮罩并不能阻止复制。DCPIXEL会从底层彻底消除被遮挡的内容，确保敏感数据完全无法复原。

🔐 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.

常见问题解答

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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