YAML Validator.
Source, settings and output stay in this browser. Report syntax, duplicate keys and unsafe constructs. Processing is local and independently checked.
- ✓Runs in your browser
- ✓No account required
- ✓Verified output
Use YAML Validator
Private in this browser. Files, schemas and output stay in this browser; the parser never executes data.
No file selected.
Preparing the local tool…
Verified result
Download resultHow it works
- 01
Paste or choose a bounded data file.
- 02
Set explicit parser or validation options.
- 03
Review and download the independently verified result.
Frequently asked questions
Is YAML, JSON or schema content executed or sent?
No. Data is parsed passively and locally, and remote schema references are rejected.
Does YAML Validator upload my data?
YAML Validator runs locally in your browser. Files, schemas and output stay in this browser; the parser never executes data.
What output does YAML Validator create?
YAML Validator creates Json output after the result passes its local verification checks.
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