JSON Sort Keys
Sort JSON object keys alphabetically online, recursively through nested objects, and pretty-print the result. Validates input first. Free, instant and private.
What is the JSON Sort Keys?
The ByteTools JSON Key Sorter reorders every object's keys into alphabetical order — recursively, all the way down through nested objects — then pretty-prints the result with clean indentation.
- Sorts object keys alphabetically, recursively
- Leaves array order untouched
- Pretty-prints with clean 2-space indentation
- Validates input with the native parser first
- Copy or download the sorted output
- 100% client-side — JSON never leaves your browser
How to use the JSON Sort Keys
- 1
Paste your JSON into the input box.
- 2
Click Sort keys.
- 3
Read the pretty-printed output with every object's keys in A–Z order.
- 4
If the JSON is invalid, use the error's line and column to fix it.
- 5
Copy the sorted JSON or download it as a .json file.
About the JSON Sort Keys
The ByteTools JSON Key Sorter reorders every object's keys into alphabetical order — recursively, all the way down through nested objects — then pretty-prints the result with clean indentation. Sorted keys make two JSON files far easier to diff and review, because the same fields always appear in the same place.
Array order is left untouched, since order is meaningful in arrays, and values are never changed. If the input is not valid JSON, the tool reports the exact error with a line and column so you can fix it before sorting.
Everything runs 100% locally in your browser using the native JSON parser. Your data is never uploaded, logged or stored, so it is safe for config files, API payloads and other sensitive documents.
Frequently asked questions
Why would I sort JSON keys alphabetically?
Sorting keys makes JSON files deterministic, so the same data always serializes the same way. That dramatically shrinks diffs in version control and makes it easy to compare two API responses or config files side by side without noise from reordered fields.
Does sorting keys change the meaning of my JSON?
No. JSON object key order is not significant, so reordering keys produces a semantically identical document. Values, nesting and array order all stay the same — only the position of keys within each object changes.
Does it sort keys in nested objects too?
Yes. The sorter walks the entire structure, so keys inside nested objects, and inside objects held in arrays, are all sorted alphabetically. Every object at every depth ends up in A–Z order.
Why are my array items not reordered?
Array order carries meaning — the first item is genuinely first — so changing it could break your data. The tool deliberately preserves array order and only sorts the keys of objects, including any objects stored inside arrays.
Is my JSON uploaded when I sort it?
No. Sorting happens entirely in your browser with the native JSON parser. Nothing is transmitted, logged or stored, making it safe for confidential configuration and data files.
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