Sort JSON keys alphabetically, by values, ascending or descending — with nested object support. Fast, free, and 100% private.
Copy your unsorted or messy JSON data and paste it into the input editor on the left. You can also click "Sample" to load example data instantly.
Select how you want to sort — by keys alphabetically, by values, ascending or descending. Enable "Sort Nested" to recursively sort inner objects too.
Click the Sort button. Your sorted, formatted JSON appears instantly on the right. Copy it, download it, or use it directly in your project.
The JSON Sorter by ToolGalaxy is a powerful, browser-based utility designed for developers, data engineers, and API testers who need to quickly organize messy JSON data. Whether you are working with configuration files, API responses, database exports, or large datasets, this tool makes it effortless to sort JSON object keys and values in any order you need — all without installing any software or sending your data to a remote server.
Unsorted JSON objects are perfectly valid according to the JSON specification, but they create real-world problems. When comparing two JSON responses in tests, differing key orders cause false failures. In version control systems like Git, unsorted keys generate unnecessary diffs that clutter pull requests. For logging and debugging, alphabetically sorted keys make it significantly easier to scan large objects and locate specific fields. Our JSON Sorter eliminates these issues by letting you enforce a consistent key order across all your data.
API Testing: When writing integration tests, sorted JSON lets you do reliable string comparison of expected vs. actual responses without worrying about key order variations between different server implementations or database engines.
Configuration Management: Sort your JSON config files (package.json, tsconfig.json, .eslintrc) so that team members can review changes without noise from reordered keys.
Data Migration & ETL: When moving data between systems, sorted output helps you verify that all expected fields are present and in a known order, reducing migration errors.
Documentation & Reporting: Alphabetically sorted JSON is far more readable in technical documentation, wiki pages, and automated reports where stakeholders need to quickly find specific fields.
Debugging Complex Responses: Large API responses with hundreds of keys become manageable when sorted — you can immediately jump to the section you need instead of scanning randomly ordered data.
Nested sorting is one of the most requested features, and our tool handles it gracefully. When the "Sort Nested" checkbox is enabled, the sorter traverses your entire JSON tree — including objects nested inside arrays — and applies the same sorting logic at every level. This means a deeply nested structure like {"z": {"c": 1, "a": 2}, "m": [{"b": 3, "a": 4}]} will have every layer sorted consistently, giving you a clean, predictable output no matter how complex your data is.
This JSON Sorter is optimized for speed. It handles JSON payloads up to several megabytes in size without noticeable lag, thanks to efficient in-memory parsing and sorting algorithms. The tool works flawlessly across all modern browsers — Chrome, Firefox, Safari, Edge, and Brave — on both desktop and mobile devices. There is no minimum JSON size, and the interface remains responsive even with very large inputs.
Unlike many online JSON sorters that only offer basic key sorting, ToolGalaxy's JSON Sorter provides six distinct sorting modes, nested object support, formatting, minification, and download functionality — all in a single, clean interface. Most competing tools either require you to paste data into a server (raising privacy concerns) or lack essential features like value-based sorting and recursive nested sorting. Our tool is built to be the last JSON sorter you will ever need.
Is this tool really free? Yes, completely free with no usage limits, no signup, and no hidden features behind a paywall.
Does it work with large JSON files? Yes, the tool processes everything in your browser and can handle multi-megabyte JSON files efficiently.
What happens to my data? Nothing. Your JSON is processed entirely in your browser's memory. No data is transmitted to any server, stored, or logged.
Can I sort JSON arrays? The tool sorts object keys within your JSON. Arrays maintain their order, but any objects found inside arrays will have their keys sorted when "Sort Nested" is enabled.