Redact PDF
Visually blackout, mosaic, or blur sensitive information in PDF files. Irreversible physical rasterization and deep metadata sanitization for privacy protection.
PDF 涂黑与马赛克脱敏工具
在浏览器中对 PDF 敏感区域进行抹黑、马赛克或模糊处理。 采用物理像素级不可逆销毁与深度元数据擦除技术， 100% 纯本地离线计算，确保隐私内容绝对无法还原。
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Redact PDF provides a visual, interactive editor to permanently conceal and protect sensitive data in your PDF documents. Drag to mark any confidential area—such as names, addresses, ID numbers, signatures, official seals, financial figures, or portraits—and apply blackout, whiteout, mosaic, or blur effects.
Unlike standard PDF editors that simply superimpose superficial black rectangles over existing text, this tool performs irreversible physical pixel rasterization. The underlying text layers, vector graphics, and OCR streams are completely destroyed and cannot be recovered by copy-pasting or reverse-engineering.
Additionally, the tool performs deep metadata wiping, eliminating author information, creation history, and XMP streams. All processing runs 100% locally in your browser with zero server uploads.
كيفية الاستخدام
Upload PDF Document
Select or drag-and-drop the PDF file you wish to redact.
Mark Sensitive Areas
Click and drag on any page to draw redaction boxes around confidential content.
Choose Redaction Style
Select blackout, whiteout, mosaic (adjustable pixel size), or blur. Toggle real-time preview to inspect the result.
Export Secured PDF
Click "Generate Secured PDF" to execute irreversible flattening, metadata wiping, and download your secured document.
حالات الاستخدام
Privacy & Regulatory Compliance
Safely mask Personally Identifiable Information (PII) to comply with GDPR, HIPAA, or CCPA requirements.
Confidential Legal & Business Sharing
Obscure trade secrets, settlement terms, signatures, and stamps prior to public disclosure or external distribution.
Financial & Identity Protection
Conceal bank account numbers, tax IDs, credit card details, and ID card numbers from statements and invoices.
الأسئلة المتداولة
Can anyone recover redacted information by copying text or inspecting layers?
No. The redacted areas undergo physical pixel burn-in flattening. Underlying text, vectors, and objects are completely removed from the file structure, making recovery impossible.
What is the difference between blackout, mosaic, and blur?
Blackout creates a solid black mask (standard for legal documents); whiteout provides a clean white mask; mosaic creates a pixelated grid; and blur produces a soft frosted glass effect.
Are files uploaded to your servers?
No. All rendering, redaction, flattening, and PDF generation occur entirely within your browser memory. Your documents never leave your device.
What metadata is removed?
Document Title, Author, Subject, Keywords, Creator, Producer, CreationDate, ModDate, and extended XMP metadata streams are thoroughly erased.