Secure Prompt — Anonymize Text Before Sending to AI

Free client-side text anonymizer. Remove emails, phone numbers, IBANs, credit cards and personal data before sending to ChatGPT or any AI service. 100% private — everything runs in your browser, nothing leaves your device.

Why Secure Prompt?

100% Private — All processing happens in your browser. No data is ever sent to any server.
Smart Detection — Detects emails, phones, IBANs, credit cards, SSNs, IPs, birth dates, and more automatically.
Fully Reversible — Restore the original text after receiving your AI response with one click.
16 Languages — Available in 16 languages for professionals worldwide.

How It Works

Enter your text with personal data
Click Anonymize — sensitive data is replaced with placeholders
Copy the anonymized text and send it to ChatGPT
Paste the AI response and click Decode to restore original data

Blog — Privacy & AI Insights

The Future of Privacy in the AI Age: Why Your Personal Data is the New Oil
68% of professionals accidentally sent personal data to AI tools. Learn what happens to your data in ChatGPT and how to protect it with anonymization. A couple of months ago, I was up late answering emails and accidentally copied a document containing the personal information of 47 clients into ChatGPT. This article explores the real risks, common myths about AI data safety, and practical solutions like client-side anonymization.
Lawyers & AI: How to Protect Client Data While Using ChatGPT
Legal professionals face unique challenges when using AI tools. Client confidentiality and attorney-client privilege demand extra care. Learn how to leverage AI for legal research, contract review, and case analysis without compromising sensitive client information. Discover the anonymization workflow that keeps your practice compliant with bar association rules and data protection regulations.
Accountants & Financial Data: Safe AI Use for Tax & Audit Professionals
Financial professionals handle some of the most sensitive data — tax returns, bank statements, and investment records. This guide shows how accountants can use AI tools like ChatGPT for financial analysis, tax optimization, and audit preparation while keeping client financial data fully protected through client-side anonymization.
Doctors & Patient Privacy: Using AI Without Violating HIPAA
Healthcare professionals can benefit enormously from AI for diagnosis support, medical research, and patient communication. But patient data is among the most strictly regulated. Learn how doctors and medical staff can use AI tools safely while maintaining full HIPAA compliance and patient trust through anonymization before sending any data to AI.
Personal Data & AI: Frequently Asked Questions
Everything you need to know about protecting personal data when using AI tools. Covers common questions about what data AI models store, how to minimize risk, what regulations apply, and how client-side anonymization tools like Secure Prompt provide a practical solution for professionals in any industry.
Why Your Personal Data Should Never Reach ChatGPT
Your AI prompts may train future models. Learn what happens to personal data in ChatGPT, GDPR risks for professionals, and how local anonymization protects lawyers, doctors, and accountants before sharing with AI services.
5 Mistakes You Make When Sending Data to AI — And How to Avoid Them
Copying full documents, medical data, credentials into AI? Learn the 5 most common mistakes professionals make — from trusting private mode to repetitive prompts with real data — and practical solutions to fix them.
How to Protect Your Clients in the AI Era: A Practical Guide for Professionals
One wrong prompt can violate GDPR. Learn the 3-step protocol to protect client data when using AI: anonymize locally, send clean text, decode the response. For lawyers, doctors, accountants.
AI & Privacy: The Private Browser Myth and Other Misconceptions
Incognito mode, history off, paid plans — none protect your data from AI platforms. Learn the 4 biggest privacy myths and why local processing is the only real solution.
Why Every Lawyer Using ChatGPT for Legal Drafts Is Taking a Risk (And How to Fix It)
Attorneys are feeding sensitive client data into AI tools without realizing the risk. Here's the tool top law firms are quietly using in 2026 to stay compliant.
The 5 Legal Documents You Should Never Paste Directly Into ChatGPT
Contracts, affidavits, medical records in litigation — attorneys and paralegals risk client confidentiality every time they use AI without anonymizing first. Here's the fix.
Top 5 AI Tools Accountants Are Using in 2026 (And How to Use Them Without Risking Client Data)
Discover the best AI models for accounting in 2026. Learn how accountants use ChatGPT, Claude, and others safely with Secure Prompt to protect client financial data.
Is Your Accounting Firm GDPR-Compliant When Using AI? Here's What You're Probably Getting Wrong
Accountants using ChatGPT or Claude with client data may be violating GDPR. Learn the risks, the regulations, and a simple free tool to stay compliant.
Why Your Medical AI Assistant Could Be Violating HIPAA Without You Knowing
Physicians type patient data into ChatGPT daily, risking HIPAA violations. Learn how Secure Prompt anonymizes PHI locally before it reaches any AI model.
5 Medical Documents Doctors Should Never Paste Into AI Without Anonymizing First
Referral letters, discharge summaries, psychiatric notes — doctors risk patient privacy every time they use AI without anonymizing. Learn the 5 highest-risk document types and how to fix it.

Documentation

Secure Prompt is a 100% client-side Single Page Application (SPA) built with React and TypeScript. All text processing happens in your browser using Regular Expressions (Regex) and the Luhn algorithm for credit card validation. No server-side processing, no API calls, no data transmission.

Privacy Policy

At Secure Prompt, privacy is not an option — it's the core architecture. We cannot see, store, or share your data because it never leaves your device. All anonymization logic runs exclusively in your browser's memory (RAM).