JWT Decoder & Validator

Paste your JSON Web Token (JWT) to instantly decode its **Header** and **Payload** data.

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Format, Validate, and Generate Data Instantly

TrueFormatter provides essential utilities for modern web development, including JSON formatting, YAML conversion, and more.

Frequently Asked Questions

True Formatter helps you format, validate, and beautify your JSON instantly, making it easy to read, debug, and **automatically repair**.

Formatting JSON online saves time, requires no installation, and works directly in your browser without storing your data.

Simply paste your JSON into the editor or upload your JSON file, then click the Format/Beautify button. Your JSON will be formatted instantly.

Yes! TrueFormatter includes a powerful **Auto-Fixer** that can repair common JSON syntax errors. It automatically handles **missing commas**, **trailing commas**, **JSON comments (JSONC)**, unquoted keys, and single quotes, converting them into valid, clean JSON.

The Auto-Fixer specializes in errors that standard parsers reject. This includes fixing **missing commas** between elements, removing **trailing commas** in objects or arrays, stripping **JSON comments** (`//` or `/* */`), quoting **unquoted keys**, and replacing single quotes with double quotes.

After pasting your JSON, click the **'Validate'** button. If the JSON is invalid but repairable, a **yellow alert** will appear with an **orange 'Fix JSON' button**. Click this button for an instant repair.