JSON Sorter - Sort JSON Keys Online

100% Local

Free online JSON key sorter supporting ascending/descending order and recursive sorting of nested structures for easy diffing and code review. Local processing only.

TL;DR: Free online JSON key sorter that arranges object keys in ascending or descending order with optional recursive sorting of nested structures. Values stay untouched for easy diffing and code review. Processed locally, no uploads.

This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.

Next steps

Diff two JSON files Format output

Usage Guide

Unstable JSON key order ruins git diffs and human review. Recursively sort object keys, optionally sort arrays, and copy stable JSON — all local.

1. Sort JSON

Sorting changes representation, not semantics — rare APIs that depend on key order should not use this.

Paste JSON.
Choose whether to sort array elements (handy for object arrays).
Copy the sorted output for diff or storage.

2. When it helps

Config diffs in PRs.
Normalize before golden files.
Sort before flatten for cleaner key diffs.

3. Pair with

Next: json-diff; json-flatten for key-level compares.

Agree with your team: format then sort, or the reverse.
Watch memory on huge payloads.

FAQ

Completely free, no registration required. Paste JSON in your browser to sort it on demand — all operations run locally with no usage limits.

You can sort object keys in ascending or descending order, with an optional recursive mode that also sorts keys inside nested objects — ideal for data normalization.

No. Arrays preserve their original order — only object keys are sorted. This keeps list semantics intact and avoids unintended side effects.

The tool shows a clear error message with parse-error details (such as position and error type), helping you quickly locate and fix JSON syntax issues.

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