What is the difference between redaction and overlaying?

Redaction permanently deletes content and cannot be recovered; overlaying only places a mask over the content, and the underlying data still exists. Redaction provides true secure deletion.

Can redaction be undone?

No. Redaction is permanent. Please be sure to keep a backup of the original document in case you need the unredacted version.

What content can be redacted?

Text, images, and page areas can be redacted. Select the content to redact, and the tool will permanently remove it from the document.

What is the quality of the redacted document?

Redacted areas are replaced with black or white blocks, surrounding content remains unchanged, and the rest of the document quality is unaffected.

How to ensure thorough redaction?

This tool uses the pdf-lib library to truly delete content, not just overlay it. Redacted content cannot be recovered by text extraction tools.

PDF編集

Permanently remove sensitive information from PDF documents. Unlike overlaying, redaction permanently removes selected content, ensuring the information cannot be recovered by any means. Suitable for processing documents that need to be made public but contain confidential information.

ファイルはローカルで処理され、サーバーにアップロードされることはありません。

使用例

Information Disclosure

Redact personally identifiable information, account numbers, and other sensitive content before making documents public.

Legal Documents

Redact privileged information, confidential terms, and other sensitive content in legal documents.

Medical Records

Redact patient names, ID numbers, and other personal health information (PHI) to comply with privacy regulations.

Financial Reports

Redact account numbers, transaction details, and other sensitive financial information before sharing financial reports.

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