Now in early access — EU-first, GDPR-ready

Send documents to AI.
Not your secrets.

Fuscate masks sensitive data before it reaches any AI model — and seamlessly restores it in the response. No installation. No data leaks. Works in your browser.

Try Fuscate free → See how it works
app.fuscate.ai — Live demo
Your original document
Dear  ,

Please find attached the contract for  .

Total amount: € 248 500
Due date: 15. 4. 2025

IČO:  
Contact:  

Best regards,
 
Sent to AI — masked
Dear [PERSON_1],

Please find attached the contract for [COMPANY_1].

Total amount: € 248 500
Due date: 15. 4. 2025

IČO: [ICO_1]
Contact: [EMAIL_1]

Best regards,
[PERSON_2]
01
Paste document
→
02
Auto-mask PII
→
03
Send to AI + restore

Works with all major AI models

Claude ChatGPT Gemini Mistral Ollama
How it works

Three steps.
Zero leaks.

The entire masking and unmasking process runs in your browser. Sensitive data never leaves your device.

01
📄
Paste your document
Upload or paste any document — contract, email, financial report, HR record. Fuscate detects names, IDs, IBANs, addresses and more automatically.
02
🎭
Review & send masked
Sensitive entities are highlighted. You decide what to mask — always, sometimes, or never. Choose your AI model and prompt template. Click send.
03
✨
Get the real answer
AI responds with masked tokens. Fuscate instantly restores the original values — you see a clean, complete answer with real names and numbers.
Features

Built for teams
that take privacy seriously.

Everything you need to use AI safely — without slowing down your workflow.

🔄
Two-way masking
The only tool that masks your input AND restores the AI output back to real values. Competitors only do half the job.
🌍
24 EU languages
Full PII detection in Czech, Slovak, German, French, Spanish, Italian, Polish and more. Built for the European market.
⚙️
Configurable rules
Keep financial amounts visible for analysis. Mask names but not dates. Preset templates for HR, legal, finance — or build your own.
🤖
Prompt templates
One-click prompts for summarization, contract review, financial analysis, translation and more. Build a library for your team.
🔌
Bring your own key
Connect your own Claude, OpenAI or Gemini API key. Or use Ollama for fully offline, zero-cloud processing.
📁
All document formats
Paste text, upload DOCX, PDF, XLSX or CSV. No conversion needed. Output in the same format you started with.
Security & Privacy

Your data stays
where it belongs.

🧠
In-browser processing
All masking and unmasking runs locally in your browser using WebAssembly. The mapping table never leaves your device.
🇪🇺
GDPR by design
Built in the EU, for EU companies. No US data transfers, no logging of your content. GDPR compliance out of the box.
🔑
API keys stay local
Your AI provider keys are stored in your browser's secure keychain — never on our servers. We can't see them even if we wanted to.
Pricing

Start free.
Scale when ready.

5 queries free, no credit card required. Upgrade for unlimited access.

Free
0 €
forever
  • 5 AI queries to try
  • Free models (Groq, Gemini)
  • Full PII detection
  • DOCX / PDF upload
Get started free
Most popular
Pro Monthly
€9
per month · cancel anytime
  • Unlimited AI queries
  • All 15 AI models
  • Claude, GPT-4o, Gemini Pro
  • DOCX export with formatting
  • Session history
Start Pro →
Pro Annual
€90
per year · save €18
  • Everything in Pro Monthly
  • 2 months free
  • Priority support
  • Early access to new models
  • Invoice for accounting
Get Annual →

Need your own API keys? Use BYOK mode — bring any provider key and pay nothing.

Early access

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