Is MUNEX.IN free to use?

Yes. Every tool — formatter, validator, tree viewer, flowchart visualizer and all converters — is free, with no sign-up and no limits.

Is it safe to paste sensitive JSON here?

Yes. MUNEX.IN is 100% client-side: parsing, formatting, visualization and conversion run as JavaScript in your browser. Nothing is sent to any server.

What can I convert JSON into?

YAML, CSV (with nested objects flattened to columns), XML, and TypeScript interfaces — plus minified or pretty-printed JSON.

What is the flowchart view?

The Graph tab draws your JSON as a left-to-right node diagram — objects and arrays become connected cards — which makes deeply nested structures much easier to understand. You can pan, zoom and export it as a PNG.

format · visualize · convert

Unfold raw JSON into structure.

Format, validate and repair JSON, explore it as a tree or an interactive flowchart, and convert it to YAML, CSV, XML or TypeScript — entirely in your browser. Nothing you paste ever leaves your device.

Indent

input.jsonpaste, drop a file, or load the sample

Loading editor…

The view appears once there is JSON to show.

Seven tools, one page

JSON Formatter & Beautifier

Pretty-print, validate, minify and repair JSON — right in your browser.

JSON Validator & Syntax Checker

Instant validation with the exact line and column of every error.

JSON Viewer & Tree Explorer

Collapse, expand and search deeply nested JSON without losing your place.

JSON to YAML Converter

Valid JSON in, clean YAML out — instantly.

JSON to CSV Converter

Turn an array of objects into a spreadsheet-ready CSV.

JSON to XML Converter

Well-formed, indented XML from any JSON document.

JSON to TypeScript Interfaces

Paste a payload, get ready-to-use TypeScript types.

Why developers keep MUNEX.IN open in a tab

JSON is the lingua franca of APIs, configs and logs — but raw JSON is hostile to human eyes. MUNEX.IN turns it back into something readable: one paste gives you pretty-printed text with exact-position error reporting, a collapsible tree, a pannable flowchart of the structure, and one-click conversion to the format your next tool needs.

Private by architecture — all processing is client-side JavaScript; there is no upload endpoint at all.
Fast on big payloads — a hand-tuned layout engine draws thousands of nodes without a heavyweight graph library.
Repairs broken JSON — trailing commas, single quotes, comments and unquoted keys are fixed automatically.
Keeps your place — your input is saved locally between visits, never on a server.

Frequently asked questions

Is MUNEX.IN free to use?: Yes. Every tool — formatter, validator, tree viewer, flowchart visualizer and all converters — is free, with no sign-up and no limits.
Is it safe to paste sensitive JSON here?: Yes. MUNEX.IN is 100% client-side: parsing, formatting, visualization and conversion run as JavaScript in your browser. Nothing is sent to any server.
What can I convert JSON into?: YAML, CSV (with nested objects flattened to columns), XML, and TypeScript interfaces — plus minified or pretty-printed JSON.
What is the flowchart view?: The Graph tab draws your JSON as a left-to-right node diagram — objects and arrays become connected cards — which makes deeply nested structures much easier to understand. You can pan, zoom and export it as a PNG.