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IV · JSON & DataAV-D11

AV-D11

YAML Validator

Validate multi-document YAML, catch duplicate keys with line numbers, and convert it to JSON.

● Runs on your device; nothing is uploaded

How to use it

  1. Paste YAML into YAML input, or click Open file.
  2. Choose a Schema: YAML 1.2 core, YAML 1.1, JSON or Failsafe.
  3. Read the result, or the line, column and document of any error.
  4. Set JSON indent and Always output an array of documents if needed.
  5. Copy the JSON or click Download JSON.

Limits

Opened file size
20 MB
Alias expansion
2,000,000 values
Features
  • Multi-document streams split with ---
  • Duplicate keys reported as errors
  • Error snippet showing the offending lines
  • YAML 1.1 mode reads yes/no/on/off as older parsers do
  • Dates and binary become ISO strings and Base64 in the JSON

For AI agents: avtools_yaml_validator

AV-D11 · YAML Validator

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