EveryToolAI

JSON Formatter & Validator

Format, beautify, validate and minify JSON online. Clear error messages with line and column — fast, free, and fully in your browser.

Output
{
  "name": "EveryToolAI",
  "tools": [
    "json",
    "regex"
  ],
  "free": true
}

This free JSON formatter and validator beautifies, checks and minifies JSON instantly. Paste any JSON into the input pane and the formatted result appears live in the output pane — choose 2-space or 4-space indentation for readability, or Minified to strip every unnecessary character before sending a payload over the network.

If the input is not valid JSON, you get the exact parser error with the line and column where it occurred — so a missing comma or a trailing bracket in a large config file takes seconds to find instead of minutes of squinting. The validator uses the browser's native JSON parser, which means the result is exactly what JavaScript, APIs and build tools will accept: if it passes here, it parses there.

Everything happens locally in your browser. API responses, config files and payloads often contain tokens, keys or customer data — with this tool they are never uploaded to any server, unlike formatter sites that process your JSON remotely. Copy the output with one click when you are done.

Frequently asked questions

How do I fix “Unexpected token” JSON errors?

Paste the JSON here and the error message shows the exact line and column of the problem — usually a missing comma, an unquoted key, or a trailing comma, which JSON does not allow.

What is the difference between formatting and minifying?

Formatting adds indentation and line breaks so humans can read the structure; minifying removes all whitespace so the payload is as small as possible for machines. Both produce identical data.

Is my JSON uploaded to a server?

No. Parsing and formatting run entirely in your browser using the native JSON engine — sensitive payloads never leave your device.

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