ToolkitBook
Sort large JSON arrays by specific keys directly in your browser. This tool handles complex nested structures and multi-field ordering for developers and data analysts.
Last updated: January 2025
10 comes after 9, not after 1.user.profile.age.Drag and drop a .json file here
or click to browse
.json file.The sort runs in your browser using Array.prototype.sort() with custom comparators. Nothing travels over the network, so there's no latency.
The input must be a valid JSON array, or an object that contains an array. Invalid JSON returns the exact line and column of the error.
For nested objects, use dot notation (e.g., user.details.age) to reach deep keys.
10 comes after 9, not after 1.Apple and apple rank the same.Sort objects inside JSON arrays by one or more keys. Comparisons run locally in your browser and handle numbers and case-insensitive strings correctly. Each detected array gets its own sort rules, including nested sub-arrays.
Paste your JSON into the editor or upload a .json file via the drop zone. The File API reads content locally. No data is transmitted to a server.
Click Parse JSON. The tool validates syntax and scans the object tree for arrays. Each array is listed by path (e.g., root.orders[*].items) with its object count.
Set the sort parameters for each detected array:
Click Sort to run the sort logic on a deep copy of the data.
.json file.Standardize unsorted REST API responses. Sort a list of records by id or created_at to spot duplicates or find the newest entries at a glance.
Prep two datasets for comparison. If two JSON exports hold the same data in different orders, a standard diff won't work. Sort both by a shared key like email or sku for a clean, accurate diff.
Handle nested structures in one pass. Sort departments by name while sorting each department's employees array by hire_date. The tool applies your rules across the entire JSON tree.
Yes. Click Add Sort Key to chain criteria. The first key is the primary sort; additional keys resolve ties. Each rule can be ascending or descending.
Objects missing the sort key are moved to the end of the array. Valid data remains grouped, and the overall structure is preserved.
The parser scans the JSON tree recursively for every array of objects. Each array gets its own configuration block, so parent and child arrays can use different sort rules.
Yes. Numbers compare by value, so 10 follows 9. Strings compare case-insensitively, so Apple and apple rank the same.
Yes. Everything happens in your browser. The File API keeps data in local memory. No JSON content is sent to or stored on any server.
The tool identifies arrays at any depth within valid JSON.
| Structure | Technical Context | Supported |
|---|---|---|
| Root-level Array | Arrays containing objects at the top level. | Yes |
| Object Properties | Objects containing one or more array properties. | Yes |
| Deeply Nested | Arrays located multiple levels down the tree. | Yes |
| Primitive Arrays | Arrays of strings or numbers (e.g., ["a", "b"]). |
No* |
*Primitive arrays have no object keys to sort by, so they're skipped.