What is NICH: GPT Anonymizer?
NICH: GPT Anonymizer can be used across any browser-based AI assistant interface, including ChatGPT, Claude, Gemini, Perplexity, DeepSeek, and more, supporting webmail and various web applications. Users simply click the black “closed-eye” button in the corner of the text box to instantly anonymize all personal and business-sensitive information. By right-clicking and selecting “Copy Deanonymized,” they can restore placeholders in AI responses to their original content in real time and paste it into the desired location. The entire process operates without relying on servers, collecting data, or tracking user behavior; once the model is loaded locally, subsequent operations respond in milliseconds.
Key features
One-click anonymization: Click the NICH button in the corner of the text box to automatically identify and replace names, company names, addresses, email addresses, phone numbers, dates, amounts, bank card numbers, URLs, and user-defined terms (such as project codes) with uniform placeholders, while preserving semantic integrity.
Right-click for instant restoration: Select any text in the AI-generated response, right-click, and choose “Copy Deanonymized.” All placeholders will immediately revert to their original real-world information, ready to be pasted directly into emails, documents, or chat windows.
Use cases and audience
Professionals who need to handle others’ data—including AI email writers, customer service teams, medical institutions, law firms, HR and recruitment personnel, and anyone managing customer lists.
- When composing emails containing customer information using browser-based AI assistants like ChatGPT, Claude, or Gemini.
- Anonymizing conversation content when the customer service team handles user inquiries
- Doctors, lawyers, or HR personnel submit text containing personally identifiable information (PII) to AI to generate compliant responses
English text containing identifiable information such as personal names, company names, addresses, email addresses, phone numbers, dates, amounts, card numbers, URLs, and other sensitive terms added by the user.
The input text has all sensitive information replaced with uniform placeholders (e.g., [NAME 1]), resulting in an anonymized version; after right-clicking to copy the de-anonymized content, the output reverts back to the original text.
Frequently asked questions
What types of information does NICH replace?
Replace personal names, company names, addresses, email addresses, phone numbers, dates and times, amounts, bank card numbers, and URLs; supports adding custom terms (such as project codes) and assigning corresponding placeholders.
Will my text leave my computer?
No. The detection model runs entirely within the browser; only the model file is downloaded initially. There are no servers, no accounts, and no tracking—your text remains completely private.
How to use
- 01
Click the black “closed-eye” button in the corner of the text box to replace names, email addresses, phone numbers, and other details with placeholders like [NAME 1], [EMAIL 1], etc., with a single click
- 02
Send the message as usual—AI only sees the placeholders, while the meaning remains intact and the response stays usable
- 03
Select the answer returned by AI, right-click, choose “Copy De-anonymized Content,” and after pasting, all placeholders will automatically revert to the original information
- 04
The first time you use it, the model automatically downloads once from Hugging Face; subsequent interactions are instantly responsive
Pricing and availability
Completely free, with no usage limits, no account requirements, and no paid tiers; you may choose to make a voluntary donation to support the project.
- Pricing source
- https://nichtech.uk/
- Pricing last updated
- 2026-10-30
Prices and limits may change. Check the official website for current terms.
Official website & sources
Updated on 2026-10-30
