Password Regex Generator

This tool accepts policy inputs describing password requirements and returns a PCRE-compatible regex along with a brief rationale. It supports min and max length, mandatory character types (uppercase, lowercase, digits, symbols), and optional exclusions. The output is designed for direct integration into server or client validation pipelines. It emphasizes policy-driven regex construction, cross-runtime compatibility, and clear guidance for testing and deployment. The approach minimizes ad hoc checks and ensures consistent enforcement across systems. Users include developers, security engineers, QA teams, and DevOps engineers responsible for authentication controls. Unique value lies in translating policy into a single, maintainable pattern with example scenarios and edge-case handling. Core features cover lookaheads for requirements, anchoring, and length quantifiers, with optional Unicode handling and disallowed patterns. Use cases span web forms, APIs, and internal services that require robust password validation.