ListFan
Archive · Free

JSON formatter

Validate JSON and format it as readable, indented text. Your data stays in the browser.

This tool is archived. Recheck its method and dated data before use.

01Enter your values

Runs in your browser

Runs offline in your browser. Once the page and required files have loaded, processing needs no internet.

JSON

02JSON formatter

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Runs in your browser

How it works

Validate JSON and format it as readable, indented text. Your data stays in the browser.

Runs in your browser

Discovery source

Your data stays yours

Inputs are processed on this page and are never sent to a server.

About this tool

Validate JSON and format it as readable, indented text. Your data stays in the browser.

Format or compact JSON while preserving every digit of large integer literals.

Use tool ↑
How to use it
  1. Enter your values
    • Text
    • Indent
  2. Calculation method

    Validate JSON and format it as readable, indented text. Your data stays in the browser.

  3. Example scenario · Result

    { "name": "ListFan", "free": true, "languages": 20 }

Calculation method

  1. Format or compact JSON while preserving every digit of large integer literals.
Example scenario

JSON formatter

Text
{"name":"ListFan","free":true,"languages":20}
Indent
2
Result
{
  "name": "ListFan",
  "free": true,
  "languages": 20
}

Frequently asked questions

How should I interpret the result?

Format or compact JSON while preserving every digit of large integer literals.

Where does my data go?

Calculations run on your device. Form inputs are not sent to a server.

Terms and definitions

Enter your values

Text

Enter the source text; it is processed locally.

Indent

Choose the mode that matches the data you entered.

Options: 2 · 4 · 0

Result

Result

Format or compact JSON while preserving every digit of large integer literals.

Calculated from your entries using the method below.

Common mistakes and quick fixes

JSON formatter

Mistake: Treating a result as valid outside the described scope.

Fix: Format or compact JSON while preserving every digit of large integer literals.

Limits and key assumptions

  • Format or compact JSON while preserving every digit of large integer literals.