SHA256 Password Generator

This tool deterministically derives a site-specific password from a user master seed using SHA-256. It accepts a site label, a desired password length, and a charset choice, plus optional salt. The result is reproducible on any device that provides the same inputs, with no data stored by the tool.
Conceptually, inputs are concatenated in a fixed order and hashed. The 256-bit digest is then encoded into the selected charset, producing a password of the requested length. The approach emphasizes determinism, client-side execution, and configurability for automation and testing workflows.
Who benefits: developers, QA engineers, sysadmins, and users who need repeatable credentials across environments without keeping a password vault. Unique differentiators include explicit salt support, configurable length, and two charset modes, all executed locally.
Core features include input validation, deterministic output, and an easily auditable derivation hash. Use cases span temporary test accounts, script-based provisioning, and offline credential workflows. Limitations: the method relies on the secrecy of the seed; losing the seed compromises all derived passwords.