Environment Config Diff
Compare two configs (.env, JSON, YAML, TOML, INI) key by key — missing, extra and changed keys, secrets masked.
About this tool
Compare two configuration files (.env, JSON, YAML, TOML or INI) key by key and see which keys are only in the base, only in the target, or have different values. Nested keys are flattened to dotted paths, and you can ignore keys with patterns such as AWS_*.
Values for secret-looking keys (passwords, tokens, API keys) and values that look like credentials are masked and never shown. Masking is heuristic: a secret stored under an ordinary key name may not be recognised, so check before sharing a result. Everything runs in your browser.