What formats are supported?

YAML (via js-yaml) and TOML. The format is detected automatically or manually selectable.

Yes, each error includes line number, error type and an explanatory message.

Can I format the file?

Yes, if the file is valid, you can get a formatted/indented version.

🇬🇧WebFileTools/YAML / TOML Validator

Validate and format YAML and TOML files. Detailed error messages with line numbers.

Drop a .yaml / .toml file or click

The YAML/TOML validator checks the syntax of your configuration files and displays errors with line numbers.

Paste your YAML or TOML, or import a file. The tool validates syntax and shows detailed errors or confirms validity.

What formats are supported?: YAML (via js-yaml) and TOML. The format is detected automatically or manually selectable.
Are errors detailed?: Yes, each error includes line number, error type and an explanatory message.
Can I format the file?: Yes, if the file is valid, you can get a formatted/indented version.

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