100% local

YAML formatter and validator

Paste YAML or JSON, upload a .yml, .yaml or .json file, validate syntax and convert between YAML and JSON without network requests.

YAML workspace

No remote references are resolved and no user content is executed. Large files are limited to keep the browser responsive.

Load .yml, .yaml or .json Maximum file size: 512 KB. Result view Indentation

Local only This tool parses text locally with the yaml package. It does not fetch remote files, resolve external references or run the content you paste.

Input Result

Lines: 0 Characters: 0 Size: 0 B

Ready.