100% PrivateTree ViewUndo/RedoFree
root:Object{7}object
name:string
age:number
active:boolean
email:null
address:Object{4}object
street:string
city:string
state:string
zip:string
hobbies:Array[3]array
0:string
1:string
2:string
scores:Array[3]array
0:number
1:number
2:number

How It Works

1

Paste or Import

Paste JSON in raw mode or import a .json file.

2

Edit Visually

Use tree view to edit values, add/remove keys, and change types.

3

Export

Copy to clipboard or download as .json file.

Frequently Asked Questions

What can I do in tree mode?
Click values to edit inline, change types via dropdown, add/remove keys, and expand/collapse nodes.
Can I undo changes?
Yes, full undo/redo support. Every change is tracked in history.
Can I search within JSON?
Yes, use the search bar to filter nodes by key names or values.
Can I import/export files?
Yes, import .json files and export your edited JSON as a downloadable file.
What value types are supported?
String, number, boolean, null, object, and array. Change types via the dropdown on each node.
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About JSON Editor

What this tool does

Developer and design tools include CSS generators (gradients, shadows, glassmorphism), code playgrounds, color pickers, responsive previews, and reference charts for HTML tags, HTTP methods, and keyboard shortcuts.

Why use this tool

Front-end development involves constant context switching between code and visual output. Having generators and references in a single browser tab speeds up prototyping and reduces the need to search through documentation sites.

How it works

Each tool provides an interactive UI: you tweak parameters (colors, radii, durations), and the tool generates the corresponding CSS, HTML, or SVG code in real time. Copy the snippet directly into your project.

Pro tip

Use the CSS variable output option when available. It makes your generated code theme-friendly and easier to maintain across a design system.

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