Supported File Types

Format	Extensions	Syntax	Schema
JSON	.json	✅	✅
JSONC	.jsonc	✅	✅
YAML	.yaml, .yml	✅	✅
TOML	.toml	✅	✅
XML	.xml	✅	✅
TOON	.toon	✅	✅
SARIF	.sarif	✅	✅
HCL	.hcl, .tf	✅	—
INI	.ini, .cfg	✅	—
HOCON	.conf	✅	—
ENV	.env	✅	—
CSV	.csv	✅	—
Properties	.properties	✅	—
EDITORCONFIG	.editorconfig	✅	—
Justfile	justfile, .justfile	✅	—
Apple PList XML	.plist	✅	—

Schema types

• JSON, JSONC, YAML, TOML, and TOON files are validated against JSON Schema.
• XML files are validated against XSD (XML Schema Definition).
• SARIF files are validated against a built-in schema matched to the file's version field.

File type families

• json includes both JSON and JSONC for filtering purposes (--file-types, --exclude-file-types).
• yaml includes both .yaml and .yml.

Known files

Many files are recognized by filename regardless of extension. See Known Files.