AI Prompt Cleaner
Replace emails, phone numbers, API keys, IPs, and other sensitive data in your prompt with placeholders before sending it to ChatGPT, Claude, or Gemini — then restore the AI's response.
About This Free Online AI Prompt Cleaner
Our free AI prompt cleaner helps you remove sensitive information from text before sending it to ChatGPT, Claude, Gemini, or any other AI tool. Paste your prompt and the tool detects emails, phone numbers, URLs, IP addresses, SSNs, credit card numbers, and API keys or secrets, replacing each one with a numbered placeholder like [EMAIL_1] or [API_KEY_1]. Copy the sanitized prompt and send it to the AI without exposing your real data. When you get a response back — which may echo those placeholders — switch to Restore mode, paste the response, and the tool swaps every placeholder back to its original value. Toggle which categories to detect on or off, and everything happens locally in your browser: nothing is uploaded, logged, or stored on a server.
Features of Our AI Prompt Cleaner
- Detects emails, phone numbers, URLs, IP addresses, SSNs, and credit card numbers
- Detects API keys and secrets using 25+ patterns (AWS, GitHub, Stripe, Slack, and more)
- Replaces each match with a numbered placeholder like [EMAIL_1] or [SECRET_1]
- Toggle each detection category on or off
- Restore mode swaps placeholders in an AI response back to your original values
- Live counts of items replaced as you type
- 100% private — everything runs in your browser, nothing is uploaded
How to Use the AI Prompt Cleaner
Using this tool is simple and requires no signup or registration. Follow these steps:
- In Sanitize mode, paste the prompt you plan to send to an AI tool.
- Choose which types of data to replace using the checkboxes.
- Copy the sanitized prompt and send it to ChatGPT, Claude, or Gemini.
- Switch to Restore mode and paste the AI's response to swap placeholders back to your original values.
Frequently Asked Questions About AI Prompt Cleaner
What does this tool detect?
It detects emails, phone numbers, URLs, IP addresses, SSNs, credit card numbers (validated with the Luhn algorithm), and API keys or secrets using the same 25+ pattern library as our Secret Scanner — covering AWS, Google, GitHub, GitLab, Stripe, Slack, Discord, and more.
How does the restore step work?
When you sanitize a prompt, the tool keeps a temporary map of each placeholder (like [EMAIL_1]) to the original value, in memory for the current page. Paste the AI's response into Restore mode and every matching placeholder is swapped back to the original value.
Is the mapping saved anywhere?
No. The placeholder mapping only exists in memory while the page is open. Refreshing or closing the page clears it. Nothing is sent to a server, stored in a database, or written to your disk.
Is it safe to paste sensitive information here?
Yes. All detection, replacement, and restoration happen locally in your browser using JavaScript. Your text is never uploaded, logged, or transmitted anywhere.
Can I choose which types of data get replaced?
Yes. Use the checkboxes above the input to enable or disable detection for email, phone, URL, IP address, SSN, credit card, and API key/secret categories independently.
Is this tool free to use?
Yes, completely free with no signup, no limits, and no usage tracking.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.