Prompt Injection Scanner is a free Chrome add-on designed to enhance web security by detecting prompt injection attacks. This tool scans any webpage for hidden threats such as invisible text, zero-width characters, and suspicious meta tags that could manipulate AI assistants like Claude or ChatGPT. By identifying these potential vulnerabilities, users can ensure a safer browsing experience when interacting with AI functionalities embedded within web pages.

The tool operates by analyzing the content of a page for malicious instructions that may be concealed from the human eye. Prompt injection attacks can lead to compromised AI behavior, where the AI may recommend unsafe sites or disclose sensitive information. With the Prompt Injection Scanner, users gain an additional layer of protection against these stealthy threats, thereby reinforcing their digital security while navigating the web.