YAML Checker — Multi-Block Validation
Use our yaml checker to validate YAML with block-by-block diagnostics. Supports standard markers ("---") and custom delimiters like "------".
How our yaml checker works
Paste multiple YAML documents into the editor. The yaml checker splits content by "— — —" markers or by a custom delimiter. Each block is parsed independently with precise error locations.
Key benefits
- Per-block error isolation: a failing block never blocks others.
- Line and column accuracy for quick debugging.
- Supports both standard YAML markers and custom separators.
How it works
Click "Run YAML checker" to analyze blocks. Then edit each block directly in Results. You can copy a single block or copy all blocks merged into one YAML.
Detected blocks: 0 • Delimiter preview:
autoFAQ
Q: Will the yaml checker alter my content?
A: No. Checking only validates. Use the formatter on the YAML Lintter page to change formatting.
Q: Can I validate a single long line like "------test: 1------test: 2"?
A: Yes. Set the delimiter to "------" to split into two valid blocks.