JSON Unflattener
Rebuild nested JSON from flat dot-notation or bracket-notation keys.
JSON Sorter
Sort JSON object keys alphabetically at every level, or sort arrays by a field.
Quick Tool Overview
The JSON Sorter orders object keys alphabetically at every nesting level, using a natural comparison so item2 comes before item10. Arrays of objects can also be sorted by any field you name.
- What it does
- Sorts JSON object keys and, optionally, arrays of objects
- You give it
- Any JSON document
- You get back
- The same data with keys in a predictable order
- Best for
- Making two payloads comparable before a diff or a checksum
About the JSON Sorter
Two JSON documents that hold the same data can look completely different if the keys come back in a different order. Sorting them both makes the pair comparable by eye, by a text diff and by a checksum — which is the usual reason to do it.
Keys are sorted at every level, with a natural comparison so item2 comes before item10 rather than after it. Arrays of objects can be sorted separately by any field you name, ascending or descending, which is how you make a list of records line up between two environments. Sorting never changes a value: only the order keys appear in, which JSON itself treats as insignificant.
Key features of the JSON Sorter
Sorted at every level
Nested objects are sorted too, not just the top one, so the whole document reaches a canonical order.
Natural number ordering
Digit runs are compared as numbers, so item2 sorts before item10 rather than after it.
Sort arrays by a field
Name a field such as id or name to order arrays of records, ascending or descending.
Values are never touched
Only the order keys appear in changes, which JSON itself treats as insignificant. The data is byte-for-byte the same.
Makes diffs readable
Sort two responses the same way and a plain text diff will show only the real differences.
How to use the JSON Sorter
-
1
Paste the JSON
Any document — the sorter walks every level of it.
-
2
Choose a direction
A to Z or Z to A for object keys, applied at every depth.
-
3
Sort arrays by a field
Name a field such as id or name to order arrays of objects by it as well.
-
4
Copy the result
Take the sorted document to your clipboard or download it.
Frequently asked questions
The specification says an object is unordered, so no parser should depend on it. It matters to humans and to tools that compare text, which is exactly why sorting is useful.
Not unless you ask. Array order is usually meaningful, so items keep their positions unless you name a field to sort them by.
One that reads digit runs as numbers, so item2 sorts before item10. A plain string sort would put item10 first, which is rarely what anyone wants.
Yes, and it is one of the best uses for it. Sort both, then run them through the JSON Diff or any text diff and only real differences will show.
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