Last updated 11-10-2025
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MaskMyPrompt
MaskMyPrompt is a browser-based tool that helps you anonymize your prompts before sending them to ChatGPT. It replaces personal details such as names of people, organizations, and locations with made-up substitutes, ensuring your sensitive information stays private. All processing happens locally in your browser, so your data never leaves your device or gets saved on any server. This approach gives you full control over what information is shared with ChatGPT, making it ideal for professionals, researchers, and anyone concerned about privacy. The tool is straightforward to use and does not require any installation or account creation. Developed by Mike Ushakov with the help of ChatGPT and built using Transformers.js, it leverages modern JavaScript libraries to perform anonymization efficiently on the client side. MaskMyPrompt is especially useful for those who want to maintain confidentiality while still benefiting from AI-powered text generation. Its simple interface highlights the original prompt and the masked version side by side, making it easy to verify the anonymization before submission. By focusing on local processing and user control, MaskMyPrompt stands out as a privacy-first solution for prompt anonymization.
🛡️ Local anonymization keeps data private in your browser
🔄 Replaces names and locations with fictional substitutes
👀 Side-by-side view of original and masked prompts
⚙️ No account or installation needed for quick use
📧 Direct support via email and Twitter for feedback
Processes data entirely in-browser ensuring maximum privacy
Simple interface with clear masked and original prompt comparison
No account or installation needed for immediate use
Supports anonymization of multiple sensitive data types
Open to user feedback and feature requests
Limited to masking names of people, organizations, and locations
Does not support batch processing or integration with other tools
How does MaskMyPrompt protect my data privacy?
MaskMyPrompt processes all your prompt data locally in your browser, so nothing is saved or sent to any server.
Can I customize which details get masked in my prompt?
The tool automatically replaces names of people, organizations, and locations with fictional ones to anonymize your prompt.
Do I need to create an account to use MaskMyPrompt?
No account or installation is required; you can use MaskMyPrompt directly in your browser.
Is MaskMyPrompt compatible with all browsers?
MaskMyPrompt works in modern browsers that support JavaScript and client-side processing.
Who developed MaskMyPrompt?
MaskMyPrompt was programmed by Mike Ushakov with assistance from ChatGPT and built using Transformers.js.
Can I provide feedback or request new features?
Yes, you can reach out via email or Twitter to report bugs or suggest new data types for masking.
Does MaskMyPrompt work with other AI models besides ChatGPT?
Currently, MaskMyPrompt is designed specifically to anonymize prompts before sending them to ChatGPT.