JSON Formatter

Developer Tools

JSON Formatter

Format, validate, minify and inspect JSON in a focused browser editor.

Input / output

Valid JSON5 Keys · 3 Depth

Output / Tree

Valid JSON

Keys

5

Depth

3

Objects

2

Arrays

1

bytes

155

Output / Tree
{
  "name": "Online Toolbox",
  "locale": "en-US",
  "features": [
    "format",
    "validate",
    "copy"
  ],
  "settings": {
    "history": "off"
  }
}

Copyable result summary

JSON result summary
status=valid
keys=5
depth=3
objects=2
arrays=1
bytes=155
local-only=true
local-only: input and output stay in this browser and are not uploaded.

JSON Inspector

155 bytes

Keys

5

Depth

3

Objects

2

Arrays

1

Values

6

Structure navigator

$

Array table preview

Object arrays appear here as a table preview.

Valid JSON. You can copy the result.

Safe prepared results can be sent to the next tool.

Tool usage summary

Use it for API responses, config files, log payloads, and compact JSON that needs readable indentation or quick error checks.

Processing
JSON input is formatted, minified, and validated in the browser without being sent to a server.
Example
Paste {"name":"tool","count":2} to get indented JSON plus key count, depth, and validation status.

Quick answer summary

JSON Formatter formats pasted JSON, validates syntax, and shows browser-local parsing feedback.

When to use it
Use it for API responses, config files, log payloads, and compact JSON that needs readable indentation or quick error checks.
Processing
JSON input is formatted, minified, and validated in the browser without being sent to a server.
Example
Paste {"name":"tool","count":2} to get indented JSON plus key count, depth, and validation status.
HelpOpen usage notes, examples, practical tips, and FAQ only when you need them.

What is this tool?

JSON Formatter is a browser-first tool for format, validate, minify and inspect JSON in a focused browser editor. It fits into the developer workflow and keeps the main task on one page.

How to use it

  1. Enter the input

    Paste or edit the value in the input area. Sample values are safe placeholders for testing the tool.

  2. Adjust options

    Choose the mode, format, unit, or count that matches the JSON, JSON formatter, json formatter and validator task.

  3. Review the result

    Run the tool, inspect the output, then copy or download it only when the result matches your expectation.

Examples

JSON Formatter example

Input
{"name":"tool","count":2}
Output
{ "name": "tool", "count": 2 }

Practical tips

  • For large inputs, process the smallest useful sample first to keep the browser responsive.
  • Ad slots are intentionally kept away from tool controls and result panes.

FAQ

What input should I use with JSON Formatter?

Use values that match the JSON, JSON formatter task, then adjust the visible options before running the tool.

Can I copy the JSON Formatter result?

Yes. Review the output first, then copy or download it when the result matches your expectation.

Can I use JSON Formatter on mobile?

Yes. The input, options, action, and result areas are designed to stack cleanly on small screens.

Will ads interrupt JSON Formatter?

No. Ad slots stay outside the input, output, and primary action areas so the tool remains usable and policy-safe.

Does JSON Formatter send JSON to a server?

No. Pasted JSON is formatted, minified, and validated in the current browser without server upload or storage.

Where can I check JSON syntax errors?

Use the validation status and error message to locate the issue, edit the input, and run formatting again.

What should I check before sharing an API response?

Remove tokens, passwords, internal URLs, and other sensitive values before formatting or minifying JSON for documentation or review.

Tools to Use Together

JSON to TypeScriptYAML to JSON ConverterURL/Base64 Encoder