Do I need an account to use this tool?

No, this tool is completely free and requires no account registration. You can use it immediately.

Is there a limit to how many times I can use it?

No, there are no usage limits. You can use it as many times as you want without any restrictions.

Is my data stored or shared?

No, this tool runs entirely in your browser. Your data is never stored on our servers or shared with third parties.

PDF Sensitive Info Redaction

Redact sensitive information like social security numbers and bank account numbers from PDF files with black box overlay and save securely.

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Click or drag and drop a PDF file to upload

Max 50MB, PDF files only

How to Use PDF Redaction Tool

Step 1: Upload PDF

Upload a PDF file containing sensitive information you want to redact. Files up to 50MB are supported.

Step 2: Select Sensitive Areas

Use 'Auto Detect' to find SSN and account number patterns, or switch to 'Draw Area' mode to manually select regions by dragging.

Step 3: Review Redactions

Check the redaction list and remove any unnecessary areas.

Step 4: Download Secure PDF

Click 'Download Redacted PDF' to get a new PDF with selected areas permanently blacked out.

Use Cases

Resume Submission

Redact SSN and personal contacts from your resume before uploading online for job applications.

Contract Sharing

Safely share contracts with third parties by redacting personal identifiers like SSN and bank account numbers.

Public Documents

Remove personally identifiable information from public records before distribution in compliance with privacy laws.

Tips

Auto detect recognizes Korean SSN (000000-0000000) and common bank account number patterns.
Missed areas from auto detection can be manually added using 'Draw Area' mode.
Redaction is irreversible — always keep a backup of the original file.
Downloaded PDFs have redacted content permanently removed and cannot be recovered.
All processing happens in your browser. No files are sent to any server.

Frequently Asked Questions

PDF Redaction is a technique that permanently removes sensitive information like social security numbers, bank account numbers, and contact details from PDF documents by covering them with black boxes. Unlike simply placing shapes over text, redaction completely removes the underlying content, making recovery impossible. It's essential for complying with privacy laws when handling sensitive documents.

The auto detection feature recognizes Korean social security number patterns (6-digit dash 7-digit, e.g., 900101-1234567) and common bank account number patterns (2-6 digit groups separated by dashes). It works via regex matching on text-layer PDFs. Scanned PDFs without text layers may have limited auto detection capability.

No. All processing is done locally in your web browser using JavaScript. Uploaded PDF files never leave your device. Both redaction processing and downloading are performed client-side, ensuring zero risk of data leakage. The tool works even without an internet connection.

No. In the downloaded PDF, the original content behind redacted areas is completely removed and cannot be recovered by any means. This is the key difference between true redaction and simply overlaying shapes. Always keep a backup of the original file before redacting.

Standard text-based PDFs, image-embedded PDFs, and multi-page PDFs are all supported. Files up to 50MB can be uploaded. Unencrypted PDFs can be processed. Auto detection works most accurately on PDFs with text layers.

Yes, it's completely free to use. Since all processing happens in the browser, it complies with most corporate security policies. For high-volume document processing, a dedicated Document Management System (DMS) is recommended.

Complete Guide to PDF Redaction

What is PDF Redaction?

PDF Redaction is the process of permanently removing sensitive information from PDF documents. It is used to safely handle personal data such as social security numbers, bank account numbers, phone numbers, and addresses as defined by privacy protection laws. Unlike simply placing black boxes over text, true redaction completely removes the text data from the area, making it unrecoverable by any method.

Why is PDF Redaction Necessary?

Under strengthened privacy protection regulations, sensitive information must be removed from documents before sharing externally. Personal data in resumes, contracts, medical records, and transcripts can cause serious harm if leaked. Especially when sharing documents via email or cloud services, pre-processing through PDF redaction is essential for compliance and security.

Notice

This tool covers selected areas in PDF files with black boxes. Auto detection is based on common patterns and may not catch all sensitive information. For critical documents, please manually verify redacted areas. Original data behind redacted areas is permanently removed in the output PDF.

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