JSON Key Sorter
Paste a JSON object and sort its keys in alphabetical order. Enable deep sort to recursively sort keys in every nested object throughout the entire structure. Arrays are preserved in their original order — only object keys are reordered.
Sorted JSON is easier to diff, review in code reviews, and compare across environments. Many teams enforce sorted keys in configuration files and API response snapshots to keep diffs clean and meaningful.
The tool handles any valid JSON input: objects, arrays of objects, deeply nested structures, and mixed types. Output is pretty-printed with consistent indentation. Everything runs in your browser with no server involved.
By The Paper Room Editorial Team — Developer Tools
Frequently asked questions
Does deep sort change array order?▼
No. Deep sort only reorders object keys. Arrays keep their original element order. Objects inside arrays will have their keys sorted, but the array's sequence stays the same.
Is the sorting case-sensitive?▼
Yes, sorting uses the default JavaScript string comparison, which is case-sensitive. Uppercase letters sort before lowercase (e.g., 'A' before 'a'). This matches the behavior of most JSON linting tools.
What happens with non-object JSON?▼
If you paste a plain array, string, number, or boolean, the tool returns it unchanged since there are no object keys to sort. Nested objects within arrays will still be sorted when deep sort is enabled.