Protect, ingest, restore
PromptShield encodes sensitive data before it ever reaches an AI. Feed the protected document to any LLM, then decode the output to get real results — with zero data exposure.
100% Offline
All processing happens locally on your machine. No cloud uploads, no third-party APIs, no data leaks. Ever.
AI-Powered Detection
State-of-the-art Named Entity Recognition (NER) models automatically detect names, addresses, phone numbers, SSNs, emails, and 40+ PII types.
Reversible Encoding
PII is replaced by structured codes — not blacked out. Import the encoded AI output back into PromptShield — every code is restored to its original value automatically.
AI-Safe Documents
Feed encoded documents to any LLM. The AI works with codes instead of real data, so nothing sensitive is ever exposed.
Folder-Based Document Linking
Place related files in the same folder — they are automatically linked and share the same code registry. The same entity always gets the same code across every file in the folder.
Multilingual
Detect PII in English, French, Italian, German, Spanish, and more. Our models understand context across languages.
CLI & Self-Hosted API
Integrate anonymization into your pipelines. CLI tool for local use, self-hosted Docker API for your infrastructure. Your data stays on your machines.
Trust Badge & Verification
Prove your commitment to data privacy. Get a verifiable badge, shareable URL, and QR code that certifies your organization uses PromptShield.
Protect sensitive documents in minutes
Start your 14-day free trial today. No credit card required, no data uploaded to the cloud.