JSONFold: Format, validate, and explore JSON in your browser

JSONFold is my personal project: a free browser-based tool for formatting, validating, and exploring JSON. Here’s a quick walkthrough using fictional order data.

From compact JSON to readable data

Compact API responses can be difficult to scan:

{"order":{"id":1042,"customer":{"name":"Alex Example","city":"Maple Bay"},"items":[{"name":"Keyboard","quantity":2},{"name":"Mouse","quantity":1}],"paid":true}}

Paste the JSON into Source and click Prettify to make its structure easier to read:

{
  "order": {
    "id": 1042,
    "customer": {
      "name": "Alex Example",
      "city": "Maple Bay"
    },
    "items": [
      {
        "name": "Keyboard",
        "quantity": 2
      },
      {
        "name": "Mouse",
        "quantity": 1
      }
    ],
    "paid": true
  }
}

Explore nested objects and arrays

Switch to Structure to explore the JSON as a collapsible tree.

• Click the arrows beside objects and arrays to expand or collapse them.
• Click Expand all to open every branch.
• Select a node to inspect its associated properties in the right panel.

Search for a value

Enter Keyboard in the search field and click Find.

Use Next and Previous to move between matches. This helps you locate a value without manually opening each branch.

Copy a JSON path

Select the matching value and click Copy path.

For the keyboard’s name, the copied path is:

$.order.items[0].name

This points to the name field in the first item of the order. Array indexes start at 0.

Try JSONFold

Open JSONFold →

Disclosure: JSONFold is my personal project. I’m sharing it here to get feedback from other developers and improve the tool.

What would make navigating nested JSON easier in your daily workflow? I’d appreciate your feedback in the comments.explore JSON in your browser