JSON Sorter - Sort JSON Keys Online

Sort object keys in ascending or descending order, with an optional recursive mode that also sorts keys inside nested objects — handy for config comparison and baseline normalization.

No. Arrays keep their original order; only object keys are sorted, so list semantics like timelines and priority queues survive. Objects inside an array still get their own keys sorted. If you need object arrays sorted by a field, that is business sorting — use a script or a data-processing tool, not this page.

The tool reports the parse failure with details such as position and error type, so you can locate and fix the syntax first, then sort.

Very large integers are serialized losslessly and never silently altered by floating point; the output is indented by default, and a minify step can produce a single line later. Million-line documents, however, will strain browser memory — switch to a command-line tool at that scale.

Unify key order before diffing two configs in a merge request and the noise shrinks dramatically; normalize before generating baseline files so tests do not fail on key order alone. If you just need pretty indentation and syntax validation, use the JSON formatter; if you need stable key order for diffing or baselines, use this page. Teams should fix one pipeline order — format-then-sort or sort-then-format — write it into the contribution guide, and never mix the two.