SKSolveKit

Developer

JSON Formatter

Format, validate, minify, recursively sort, and inspect JSON in real time with precise parse errors.

Result in seconds Privacy first Free, no sign-upEspañol
Private

Use the tool

Enter your values below. Inputs stay in your browser.

Instant result

Valid JSON

{
  "name": "SolveKit",
  "fast": true,
  "tools": 150
}

5 lines in the formatted output.

JSON keys

3

Maximum depth

2

Output size

56 bytes

Share this tool

Referencing this tool on a website?

Copy an attribution link. It is optional and does not change free access.

Useful next stepJSON ValidatorValidate JSON syntax and pinpoint the first parsing error.

Transparent methodology

What the result includes—and what it does not

Updated SolveKit editorial review — developer tooling QA

Built for developers, analysts, and API users who need to inspect or clean JSON without sending it to a server.

Calculation method

  1. 1The browser's standards-based JSON parser validates the input before any transformation.
  2. 2Pretty-print mode uses two or four spaces, minify mode removes optional whitespace, and sort mode orders object keys recursively while preserving array order.
  3. 3The structural summary counts object keys, maximum nesting depth, and UTF-8 output bytes.

Assumptions and limits

  • Only strict JSON is accepted; comments, trailing commas, unquoted keys, NaN, and JavaScript object syntax are invalid.
  • Sorting changes object-key order but does not change values or array-item order.
  • Processing happens locally in the browser, so the pasted JSON is not uploaded by this tool.

Worked example

Format a compact API response

Input: {"active":true,"user":{"id":7,"name":"Ada"}}

Output: Indented valid JSON plus four keys, a maximum depth of three, and its output size in UTF-8 bytes.

Primary sources

How to use it

Three steps. One clear answer.

  1. 1Enter or paste the values requested by the tool.
  2. 2Review the input units and choose any relevant options.
  3. 3Calculate, then copy or download the result you need.

Built for trust

Useful without the friction.

  • No registration or paywall before your result.
  • Responsive controls for phone, tablet, and desktop.
  • Clear assumptions and warnings where estimates have limits.

Frequently asked questions

How does the JSON Formatter work?

The browser's standards-based JSON parser validates the input before any transformation. Pretty-print mode uses two or four spaces, minify mode removes optional whitespace, and sort mode orders object keys recursively while preserving array order. The structural summary counts object keys, maximum nesting depth, and UTF-8 output bytes.

What should I check before using the result?

Only strict JSON is accepted; comments, trailing commas, unquoted keys, NaN, and JavaScript object syntax are invalid. Sorting changes object-key order but does not change values or array-item order. Processing happens locally in the browser, so the pasted JSON is not uploaded by this tool.

How current is this page?

The methodology and source notes were reviewed on 2026-07-24. Editable rates and inputs should still be checked against the provider or authority linked below.

Keep solving

Related developer tools

View all

JSON Validator

Validate JSON syntax and pinpoint the first parsing error.

Developer

Regex Tester

Test regular expressions, flags, matches, and capture groups live.

Developer

UUID Generator

Generate secure RFC 4122 version 4 UUIDs in bulk.

Developer

Hash Generator

Create SHA-1, SHA-256, SHA-384, or SHA-512 hashes locally.

Developer

Base64 Encoder

Encode Unicode text to Base64 locally in your browser.

Developer

Base64 Decoder

Decode Base64 data into readable Unicode text.

Developer