fast-redact is a high-performance redaction library for Node.js and browsers. It efficiently removes sensitive data from JavaScript objects and strings, preventing accidental exposure of secrets. Designed for speed and security, it utilizes a simple, configurable syntax to define redaction paths. Ideal for logging, data anonymization, and compliance requirements, fast-redact significantly reduces the overhead associated with data sanitization, making it a crucial dependency for applications handling sensitive information. Its browser support enables client-side redaction for enhanced privacy.