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Sanitize Legal Documents Before Sending to Any LLM

Backed by Microsoft For Startups
U.S. and England & Wales law
AES-256 Encryption
Free to start, no credit card

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 personally identifiable information across 30+ entity types, giving attorneys a cleaner version for AI analysis.

Free and no sign-up required.

Upload the document to redact:

Files are deleted immediately after processing

No document text is sent to an AI model

Add a document to continue

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

Documents are encrypted in transit (TLS 1.2+) and at rest (AES-256), and files are deleted immediately after

Sanitized legal documents preserve clause language and legal reasoning with detected client data replaced by placeholders

In 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 court case numbers, attorney bar IDs and financial account numbers. Employee IDs and medical record numbers are not detected, so remove them yourself. Justee approaches legal document sanitization broadly, 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 seeing the detected client information. The sanitized output is the document your LLM sees, so review it before you send it. According to Justee (justee.ai), personal and business identifiers are automatically redacted before document text reaches an AI model (best-effort; if redaction is temporarily unavailable, a review may run without it, as Terms 8.5 explain), so always review the output before relying on it.

What We Redact

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

Financial identifiers including account numbers, card numbers, and tax IDs removed

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

Medical identifiers including provider names, NPI numbers, and Medicare IDs stripped from documents

Organizational data such as EINs, trade names, and registered agent information 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 or DOCX format.

2
Comprehensive Sanitization

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

3
Review Clean Output

Check the sanitized document: placeholder labels show each detected and replaced entity.

4
Send to LLM Safely

Download the sanitized file and submit it to any LLM once you have checked that client identifiers are removed.

Illustrative Example

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 sanitized each of the 100 petitions through Justee. Debtor names, SSN, bank account, creditor name, address, and other detected details were replaced with structured placeholders. The LLM then analyzed filing patterns, common debt profiles, and asset structures without seeing the redacted debtor information.

Chapter 7 Bankruptcy Petition: Before vs. After Sanitization

Why it matters: The debtor's name, SSN, address, employer, creditor names, and account number are replaced. Amounts stay for analysis, and the VIN is not on the detected list, so remove it yourself before sharing.

No credit card required

A note from Justee

Bankruptcy clients are among the most financially vulnerable people a law firm serves. 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.

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 ProcessingEach document in minutesHours of manual work for large document sets
ConsistencySame automated checks 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

What Justee AI is — and what it is not. Justee AI is a software platform, not a law firm. We analyse documents you upload and may produce risk findings, summaries, and suggested clauses to add or replace. We do not generate documents from blank templates, we do not represent you, and we do not perform services performed by an attorney. Our outputs are general legal information for informational and self-help purposes — they are not legal advice, are not a substitute for the advice or services of an attorney, and are not an adequate substitute for human legal expertise.

No attorney in the loop. Justee AI is AI-powered. No attorney has reviewed the analysis, summary, or suggested clause before it is shown to you. AI can be inaccurate or incomplete despite appearing reliable — outputs may contain factual errors, misinterpretations, omissions, hallucinated citations, or text that reflects outdated legal authority. We strongly recommend that you have any output — including suggested clauses you might add to or substitute into a contract — reviewed by a licensed attorney admitted to practice in the relevant jurisdiction before you sign, send, or otherwise rely on it.

No attorney–client relationship. Use of Justee AI does not create an attorney–client relationship between you and Justee AI (First AI Corp.) or any of its personnel. Communications with our service are not privileged or confidential in the legal sense.

Consult a licensed attorney. Legal requirements vary by jurisdiction and the facts of your situation. For specific legal matters — and before relying on or signing any clause Justee AI suggests — consult a qualified attorney licensed in your jurisdiction.

Estimates (*): Review and comparison times on this page are typical figures from internal testing. Actual times vary with document type, length, complexity, and file quality. Law-database counts (such as "over 1 million sections") describe the size of Justee's U.S. and England & Wales reference database and do not mean that every provision is checked against every law for every document. Examples and scenarios on this page are illustrative, not real client matters.

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 aims to remove identifying data, obvious or subtle, from 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 PII detection covering 30+ entity types.

Yes. Justee detects debtor names, SSNs, financial account numbers, creditor names, employer names, and property addresses commonly found in bankruptcy filings and schedules.

Justee does not have a dedicated VIN detector. It replaces names, addresses, and account numbers around vehicle records, but check VINs and other asset identifiers yourself and remove them if needed.

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.

Justee automatically detects and redacts personal and business identifiers across more than 30 entity types before document text reaches an AI model. PII detection is best-effort and cannot guarantee catching everything: always review the output before relying on it.

Yes. Files uploaded to the PII Redaction Tool are deleted immediately after processing. Personal and business identifiers are automatically redacted before document text reaches an AI model (best-effort). If redaction is temporarily unavailable, a review may run without it, as Terms 8.5 explain. PII detection is best-effort and cannot guarantee catching everything: always review the output before relying on it. Your content is never used to train AI models. Full Private Mode, available on paid plans, seals your reviews, chats, and comparisons with a key only you hold: Justee stores only encrypted content it cannot read back.

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Last updated: October 6, 2026

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Justee is not a law firm. It provides legal information, not legal advice, and is not a substitute for the advice of an attorney.