AI Prompt Scrubber — Remove Personal Data Before ChatGPT | MultiTools

What Is an AI Prompt Scrubber?

An AI prompt scrubber is a tool that finds and replaces sensitive information in your text before you send it to an AI assistant like ChatGPT, Claude, or Gemini. It scans what you are about to paste, swaps out things like email addresses, phone numbers, API keys, IP addresses, and credit card numbers for neutral placeholders such as [EMAIL_1] or [API_KEY_1], and gives you a clean version that is safe to share. When the AI replies, the same tool puts your real details back in.

This matters because anything you type into a hosted AI service leaves your control. It may be stored, reviewed to improve the model, or retained under the provider's data policy. For a quick personal question that is fine, but the moment your prompt contains a client's name, a colleague's email, a production token, or a customer's data, you are handing that information to a third party. A prompt scrubber lets you keep using AI for real work without leaking the details that should never leave your organisation.

Why Use This Prompt Scrubber?

• It never uploads your text. Detection and restoration happen entirely in your browser, so the sensitive data you are trying to protect is not sent anywhere — not even to us.
• It is reversible. Because each value maps to a stable placeholder, the AI can reason about your prompt normally, and you can swap the real values back into its answer with one click.
• It catches the things people forget. Emails, phone numbers, IP and MAC addresses, IBANs, card numbers (checked with a validation formula), API keys and inline secrets are all detected automatically.
• It handles names and internal terms. Add your own words — people, companies, projects, clients — and they are masked too.
• No account, no cost, no install. Open the page and use it.

Common Use Cases

• Debugging with AI — paste a log or stack trace to get help without exposing tokens, internal hostnames, or user emails.
• Drafting emails and documents — let the AI rewrite a message that mentions real clients without sending those names to the model.
• Working with customer data — clean a spreadsheet row or support ticket before asking the AI to summarise or classify it.
• Sharing config files — strip passwords and keys out of a snippet before pasting it for review.
• Staying compliant — reduce the personal data you send to external AI tools, in line with privacy and data-handling policies at work.

How to Use This Tool

1. Add any private words — type names, companies, or project codenames you want hidden, so the tool masks them along with the automatic patterns.
2. Paste your prompt — drop in the text you intend to send to the AI. Sensitive items are detected instantly and listed by type.
3. Copy the safe version — the cleaned prompt, with placeholders in place of real values, is ready to paste into your AI assistant.
4. Get your answer — the AI works with the placeholders exactly as it would with the real data.
5. Restore the reply — switch to the Restore step, paste the AI's response, and the placeholders turn back into your real values, all locally.

Frequently Asked Questions

Is my text sent to a server?

No. All detection and restoration run inside your browser. The whole purpose of the tool is to keep sensitive data off external services, so it never uploads what you paste.

What kinds of information does it detect?

It automatically finds emails, phone numbers, IP and MAC addresses, credit card numbers (validated by checksum), IBANs, US Social Security numbers, API keys, tokens, and secrets written inline such as password= or api_key=. You can also add custom words like names and company names.

How do I get my real data back into the answer?

Keep the same browser tab open. After the AI replies, paste its response into the Restore step and the placeholders are swapped back to your original values automatically. The mapping lives only in that tab and is never saved.

Can it detect people's names automatically?

Not reliably — names look like ordinary words, so no pattern can catch them safely. That is why you can add names and other internal terms manually, and why you should always read the cleaned text before sending it.

Is this a guarantee that my prompt is safe?

It is a strong aid, not a guarantee. It tunes for accuracy and shows you everything it changed, but you remain responsible for reviewing the result and deciding what to share with any AI service.