Can it format and validate in one place?

Yes. Use Format for readable JSON, Minify for compact JSON, and Validate for status and details.

Does it show where JSON is invalid?

When the browser provides an error position, the tool estimates the line and column.

No. Parsing, formatting, minifying, and validation happen locally.

Developer Tools

JSON Formatter & Validator

Format, minify, validate, and inspect JSON locally before using snippets in APIs, configs, and apps.

JSON input

Output

Indent

Status

Details

Root type: -
Items: -
Characters: 0

What is JSON Formatter & Validator?

JSON Formatter & Validator formats, minifies, validates, and summarizes JSON snippets in one browser-only workspace.

How to use it

Paste JSON, choose Format, Minify, or Validate, then copy or download valid output. The input stays in place when you switch modes.

How it works

The tool parses JSON with `JSON.parse`, formats or minifies with `JSON.stringify`, and derives validation details such as root type, item count, character count, and line/column hints.

Is data saved?

JSON input stays in your browser.

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