Client-side only · JSON tool

JSON Formatter and Validator

Check JSON syntax in real time, then format, minify, unescape, and copy the result. Everything runs in your current browser.

Processed in your browser

Make JSON easier to read and share

JSON inputNever uploaded

ResultLive preview

{
  "name": "ToolKit Pro",
  "local": true,
  "tools": [
    "JSON",
    "Base64"
  ]
}

How to use

1Paste JSON into the input panel.
2Use the live preview to check syntax, then choose format or minify.
3Remove string escapes when needed, then copy the processed result.

Security note

JSON parsing and transformation use browser-native capabilities locally. Content is not sent to a server, written to the URL, or automatically saved; copied text is managed by the system clipboard.

Frequently asked questions

What is the difference between format and minify?

Formatting adds indentation and line breaks for readability. Minifying removes unnecessary whitespace for transport or storage.

Why is there no result after I type?

The JSON may still be incomplete or invalid. Check double quotes, brackets, commas, and the colon between each key and value.

Does removing escapes change the original content?

It restores common JSON string escapes into new input content. Nothing is uploaded or saved, and you should review the result before copying it.