devJSON & YAML
Browse json & yaml tools. Every tool processes your input locally in your browser.
JSON & YAML
19 toolsJSON Stringify
Encode JSON as a quoted JSON string.
Open tool →String to JSON
Decode a JSON string containing a JSON document.
Open tool →JSON Sort Keys
Sort object keys recursively while preserving array order.
Open tool →JSON Flatten
Flatten JSON into unambiguous JSON Pointer paths.
Open tool →JSON Merge
Merge objects recursively; values from the second document replace conflicts, including arrays.
Open tool →JSON5 to JSON
Convert comments, unquoted keys, and other JSON5 syntax to strict JSON.
Open tool →NDJSON Viewer
Validate newline-delimited JSON and display it as an array.
Open tool →JSON Schema Generator
Infer a draft 2020-12 JSON Schema from a sample value.
Open tool →YAML Multi-document Splitter
Parse YAML documents separated by document markers into a JSON array.
Open tool →YAML Anchor Expander
Expand YAML anchors and merge keys into standalone values.
Open tool →Object Path Resolver
Resolve an RFC 6901 JSON Pointer in a JSON document.
Open tool →JSON Schema Validator
Validate JSON against a draft 7, 2019-09 or 2020-12 schema with field-level errors.
Open tool →JSON Formatter & Validator
Beautify, minify, and strictly validate JSON locally with useful errors.
Open tool →JSON Viewer
Format JSON objects and arrays with readable indentation.
Open tool →JSON Diff
Compare two JSON or JSON5 documents and see structural changes clearly.
Open tool →JSONPath Tester
Evaluate a JSONPath expression against JSON locally and inspect matching values.
Open tool →YAML Formatter
Validate and format YAML locally in your browser.
Open tool →YAML to JSON
Convert YAML to formatted JSON locally, including nested maps and sequences.
Open tool →JSON to YAML
Convert JSON values to readable YAML while preserving scalar types.
Open tool →Every tool processes your input locally in your browser.