Structured Data & Schema· Topic 04 · Definition

YAML

A plain-text data format that uses indentation instead of brackets, so a person can read it and a machine can parse it.

YAML stores structured data as indented key and value pairs. For AI readability it matters because a YAML version of a page carries the page's facts with none of its layout, so a model spends its limited context on content rather than markup. Its one well-known hazard is loose typing: an unquoted no, on or 1.0 can be read as a boolean or a number rather than the text you meant, which is exactly the problem TOML and CUE were designed to remove.

Related terms
Structured Data & SchemaTOMLA configuration format with explicit types, so a date is a date and the word no stays the word no.Structured Data & SchemaCUEA language that describes the shape of data and the data itself in one file, so a file can be checked against its own schema.Content OptimizationMachine-Readable ContentContent structured so that machines can parse meaning without rendering HTML.
More in Structured Data & SchemaAll 15 terms →
ActivityPub Canonical Knowledge Representation CUE DCAT Entity Recognition for SEO JSON-LD Knowledge Graphs llms.txt

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YAML | Geordy Glossary