JSON Sort
Free online JSON key sorter. Sort JSON object keys alphabetically with recursive nested sorting. Useful for comparing config files and reducing git diffs.
How to Use JSON Sort
Paste Your JSON
Paste the JSON object you want to sort into the input panel. The tool works with any valid JSON — objects, nested objects, and arrays of objects.
Click Sort
Click "Sort Keys" to recursively sort all object keys in alphabetical order (A-Z). Nested objects are sorted too.
Copy the Result
The sorted JSON appears in the output panel. Use the Copy button to grab it.
Example
Before (Unsorted)
{
"name": "DevTools Hub",
"active": true,
"version": "1.0.0",
"author": { "email": "[email protected]", "name": "John" }
}After (Sorted)
{
"active": true,
"author": { "email": "[email protected]", "name": "John" },
"name": "DevTools Hub",
"version": "1.0.0"
}Frequently Asked Questions
Why would I need to sort JSON keys?
Sorted keys make it easier to compare two JSON files with diff tools, read configuration files where keys are in a predictable order, and reduce unnecessary git diffs when multiple team members edit the same JSON config. It also helps when searching for a specific key in a large file.
Does key order matter in JSON?
Technically, no. The JSON spec says objects are unordered collections of key/value pairs. In practice, most JSON parsers preserve insertion order (including JavaScript's JSON.parse), so sorting can make files more readable and diff-friendly. But your application should never rely on a specific key order.
Does this sort nested objects too?
Yes. The sorter works recursively — all nested objects at any depth get their keys sorted. Arrays maintain their original element order; only object keys are sorted.
Why JSON Key Sorting Is Useful
If you work with JSON configuration files in a team, you've likely seen a pull request where someone added a new field and unintentionally reordered every key in the file because their editor auto-formatted it. Sorting keys to a consistent order eliminates this noise — the diff shows only the actual data changes, not formatting churn.
This is especially valuable for package.json, tsconfig.json, ESLint configs, and i18n translation files that multiple developers touch. Many teams add a pre-commit hook to sort JSON keys automatically.
Another practical use: when you're eyeball-comparing two JSON responses from different API environments (staging vs production, for example), having keys in the same order makes scanning for differences much faster.