JSON Formatter

Pretty-print, minify and validate JSON with error hints.

JSON inputValid

Formatted

{
  "name": "OmniCalc",
  "tools": 49,
  "langs": 10
}

175 available

Annuity and differentiated monthly installments, interest breakdown, and amortization schedule.

Calculate PITI (Principal, Interest, Taxes, Insurance), PMI, and accelerated payoff savings.

Visualize compound growth with recurring deposits, annual rate, and investment horizons.

Add or extract Value Added Tax (VAT) with international country presets.

Analyze profitability and percentage return on business capital and investments.

Gross to net salary with income tax, social contributions and deductions, monthly and annual.

About this calculator

Pretty-print, minify and validate JSON with precise parser error messages, indent size and one-click copy.

Why is my JSON invalid?

Trailing commas, single quotes and comments are not JSON — the exact parser error is shown.

Minify or format?

Minify strips all whitespace for transport; format indents for humans.

Is my data sent anywhere?

No — everything runs locally in your browser.