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Sanitize Legal Documents Before Sending to Any LLM

Backed by Microsoft For Startups
Guided by Grayver Law Group
AES-256 Encryption
Free during early access

Sanitize legal documents before sending to LLM platforms to protect client data. Every document you send to an LLM is data leaving your control. Justee detects and removes all personally identifiable information, giving attorneys a clean version safe for AI analysis.

Free and no sign-up required.

Upload your document for PII Redaction

Drop a file here or click to browse

Supports PDF, DOCX

Uploaded files are deleted immediately after processing

No one has access to the files you upload

Key Takeaways

LLMs process document inputs on external servers where client data may be logged or used for model training

Justee sanitizes documents by detecting and replacing 30+ PII types with structured, typed placeholder tokens

AES-256 encryption secures documents during the sanitization process and files are deleted immediately after

Sanitized legal documents preserve clause language and legal reasoning while containing zero real client data

Under 2 minutes*

Average Redaction Time

30+ types

PII Entity Types Detected

AES-256 Encryption

Document Security

* Estimates based on typical documents. Actual results vary by document size and complexity.

Document sanitization is the process of removing sensitive information from a document before it is shared with an external system. In the legal context, this means stripping all personally identifiable information from client files before they are submitted to large language models for analysis, summarization, or drafting assistance. The term sanitization emphasizes thoroughness — not just removing obvious identifiers like names and SSNs, but also detecting less apparent PII such as employee IDs, case-specific reference numbers, medical record identifiers, and financial account details that could be used to identify individuals. Justee approaches legal document sanitization comprehensively, scanning for over 30 entity types and replacing each with a typed placeholder that maintains the document relational structure. This enables LLMs to process the document effectively — understanding which entity is referenced where, analyzing clause interdependencies, and generating useful outputs — without ever accessing real client information. The sanitized output is the document your LLM sees, and it contains nothing that could identify any real person or organization.

What We Redact

Full document sanitization covering names, SSNs, addresses, phone numbers, and email addresses

Financial data including account numbers, transaction amounts, and compensation figures removed completely

Legal-specific identifiers like case numbers, bar IDs, and court references anonymized with typed tokens

Medical and health information including provider names and treatment details stripped from documents

Organizational data such as EINs, trade names, and registered agent information fully sanitized

Risks of Sharing Unredacted Documents

Unsanitized documents sent to LLMs expose every piece of PII to the model provider's infrastructure

LLMs may reproduce input PII in generated outputs, creating secondary disclosure vectors

Data retention policies at LLM providers vary and may change without notice to users

Multiple attorneys sending unsanitized documents create cumulative exposure across the firm's matters

Regulatory investigations may examine whether firms took reasonable steps to sanitize data before AI use

How It Works

1
Upload Legal Document

Submit your petition, contract, pleading, or other legal file in PDF, DOCX, or TXT format.

2
Comprehensive Sanitization

Justee identifies all PII — names, SSNs, financial accounts, addresses, and 30+ other entity types.

3
Review Clean Output

Preview the sanitized document with color-coded placeholder labels showing every detected and replaced entity.

4
Send to LLM Safely

Download the sanitized file and submit it to any LLM with confidence that no client data is included.

Hypothetical Case Study by Justee

A bankruptcy law firm wanted to use an LLM to analyze debtor petition patterns across 100 Chapter 7 filings to improve their intake assessment process. The Chapter 7 petitions contained debtor names, SSNs, complete financial schedules with bank account numbers, creditor identities, monthly income and expense details, and property addresses for all 100 debtors.

Issue Found: Uploading 100 unredacted bankruptcy petitions would have exposed the most comprehensive financial profiles possible — complete asset inventories, debt schedules, income details, and SSNs — for 100 vulnerable individuals to the LLM platform.

Resolution: The firm batch-sanitized all 100 petitions through Justee. Every debtor name, SSN, bank account, creditor name, address, and income figure was replaced with structured placeholders. The LLM then analyzed filing patterns, common debt profiles, and asset structures without accessing any real debtor information.

Chapter 7 Bankruptcy Petition: Before vs. After Sanitization

Why it matters: All debtor identifiers, financial details, creditor names, and account numbers are sanitized. The petition structure, debt categories, and filing pattern information remain intact for LLM analysis of bankruptcy trends.

No credit card required

Bankruptcy clients are among the most financially vulnerable people we serve. Their complete financial lives are laid bare in petition documents. Sanitizing these files before any AI analysis is not just good practice — it is a moral imperative.

Artem Dolukhanyan
Artem Dolukhanyan

Partner, Corporate Transactions at Grayver Law Group

AI PII Redaction vs. Manual Redaction

FeatureJustee AI RedactionManual Redaction
Sanitization Depth30+ entity types including financial and medicalSurface-level — often misses non-obvious PII
Batch ProcessingIndividual docs under 2 min; plans for batchHours of manual work for large document sets
ConsistencySame thoroughness for every documentQuality degrades with reviewer fatigue
LLM Output QualityTyped placeholders maintain context for LLMsGeneric [REDACTED] blocks reduce LLM usefulness
CostFree tier, no sign-up requiredSignificant staff time and overhead
* Comparison data represents estimates based on internal testing for typical document types. Redaction times and detection coverage vary by document complexity, length, and content type.

Official Privacy & Data Protection Resources

U.S. Courts — Privacy Policy for Electronic Case Files

Federal judiciary policies on protecting personal information in electronic court filings and case management systems.

NIST Special Publication 800-122 — Guide to Protecting PII Confidentiality

NIST guidance on identifying and protecting personally identifiable information in organizational data systems.

EFF — Privacy Issues and Digital Rights

Electronic Frontier Foundation resources on digital privacy rights and data protection in technology contexts.

Related Tools

PII Redaction ToolFree Contract ReviewContract ComparisonNDA ReviewPlans & PricingPrivacy Policy
Important Legal Disclaimer

Not Legal Advice: The information and analysis provided by Justee AI is for general informational purposes only and does not constitute legal advice. While we strive to provide accurate and helpful information, our AI-powered service is not a substitute for professional legal counsel.

No Attorney-Client Relationship: Use of Justee AI does not create an attorney-client relationship. Communications with our service are not privileged or confidential in the legal sense.

Consult a Professional: For specific legal matters, we strongly recommend consulting with a qualified attorney licensed in your jurisdiction. Legal requirements vary by location and circumstances, and only a licensed attorney can provide advice tailored to your specific situation.

Performance Estimates (*): All statistics, metrics, and numerical claims on this page — including review times, cost comparisons, accuracy percentages, and database size — are estimates based on internal testing, industry research, and typical use cases. Actual results vary based on document type, complexity, length, jurisdiction, and other factors. Cost comparisons reference publicly available average attorney rates and are not guaranteed savings. "1M+ laws and regulations" refers to the breadth of Justee's reference database and does not imply that every provision is checked against every law for every document.

By using our service, you acknowledge that you have read and agree to our Terms of Use and understand the limitations of AI-powered legal analysis. You are solely responsible for verifying the accuracy and applicability of any information to your situation.

Frequently Asked Questions

Document sanitization refers to the comprehensive removal of all personally identifiable information from a legal document before sharing it with an external system. It goes beyond simple redaction to ensure no identifying data — obvious or subtle — remains in the output.

The terms are often used interchangeably. Sanitization sometimes implies a more comprehensive approach that addresses all forms of identifying information, including metadata and less obvious identifiers. Justee performs comprehensive PII detection covering 30+ entity types.

Yes. Justee detects debtor names, SSNs, financial account numbers, creditor identities, income figures, employer information, and property details commonly found in bankruptcy filings and schedules.

Justee detects vehicle identification numbers and other asset-specific identifiers, replacing them with appropriate placeholders. This ensures that even specific asset data cannot be used to trace documents back to individuals.

No. Justee performs permanent sanitization — the original PII is replaced with placeholders, not hidden or encrypted. The output document contains only placeholder text, and Justee does not maintain any mapping between placeholders and original data.

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Last updated: May 13, 2026

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