Analyze JSON
Display detailed statistics about a JSON data structure. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Analyze JSON
- 1. Paste your JSON. Paste the JSON document you want to understand at a structural level, whether it is a small config or a large, unfamiliar payload someone else produced.
- 2. Read the statistics. The tool reports the root type, the maximum nesting depth, and counts of objects, arrays and keys, including how many key names are unique, giving you a summary of the document's shape without reading it line by line.
- 3. Use the summary to plan your next step. Use the depth and count figures to decide whether the structure needs flattening, whether keys look duplicated, or whether the document is simpler or larger than you assumed before opening it.
When to use Analyze JSON
Analyze JSON reports structural statistics about a document, like its nesting depth and the number of objects, arrays and keys it contains, without you having to read through the whole thing manually. Analyze JSON is a fast way to size up an unfamiliar payload before working with it.
- Sizing up an unfamiliar API response. You received a large, undocumented JSON response and want a quick sense of how deeply nested it is and how many fields it actually contains before writing code against it.
- Deciding whether a structure needs flattening. You suspect a config file has grown too deeply nested to manage comfortably, and checking the reported depth confirms whether it is worth flattening before continuing to edit it.
- Comparing the complexity of two datasets. You want to compare two JSON exports, perhaps before and after a schema change, and looking at object, array and key counts side by side highlights what actually grew.
- Estimating the scope of a data migration. Before writing a script to migrate a JSON dataset into a new system, you want a rough sense of its total key count and depth to gauge how much work the migration involves.
Examples
Inspect a structure
Input
{"user": {"name": "Ada", "tags": ["a", "b"]}, "active": true}Output
Type: object Depth: 3 Objects: 2 Arrays: 1 Keys: 4 (4 unique) …
About the Analyze JSON tool
Analyze JSON is a free online tool that works entirely inside your web browser. Display detailed statistics about a JSON data structure. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 90 JSON utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Analyze JSON cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.