Tools / Data
YAML ↔ JSON
Convert, validate, merge, sort keys, multi-doc, jump to errors. Free, runs entirely in your browser—nothing is uploaded.
What you can do
- Convert
- Validate
- Merge
- Sort keys
- Multi-doc
- Jump to errors
Private by design
YAML ↔ JSON runs entirely in your browser. Your input is never uploaded, there is no sign-up, and the tool keeps working offline after the first visit.
Related tools
- JSON Tools — Format, tree, table, path, schema, TypeScript types, YAML, NDJSON, redact, jump to parse errors.
- TOML ↔ JSON — Convert TOML and JSON with validation, sort keys, and download.
- Env/Config Diff — .env and JSON diff, secret masking, lint, merge, .env.example.