Loading...
Loading...
Decode and inspect JSON Web Token payloads and headers.
JWT Decoder is a free online utility that lets you decode and inspect JSON Web Token payloads and headers. It runs entirely in your browser — no account creation, no software installation, and no data uploaded to external servers. This makes it a practical choice for anyone who needs to work with developer & code tools-related values quickly and privately. Whether you are a professional working through a daily task list, a student checking homework figures, or a freelancer preparing a deliverable, JWT Decoder gives you an instant result you can copy, screenshot, or feed into the next step of your workflow. ToolPeg hosts this tool alongside developer & code tools tools and 300+ other free utilities so you always have a single bookmark for everyday browser-based tasks.
ToolPeg is designed around browser-based workflows. Review the specific tool's description and behavior if you are using sensitive or regulated data.
Choose the right developer utility for API payload formatting, Base64 inspection, UUID generation, and other quick debugging tasks in the browser.
A glossary-style explanation of UUIDs, why developers use them, and what they solve in systems that need unique identifiers.
Test and debug regular expressions with real-time matching and syntax help.
Format and beautify SQL queries for better readability and debugging.
Convert JSON data to XML format with configurable options.
Convert JSON arrays to CSV format for spreadsheet import.
Convert hex color codes to RGB, HSL, and other color formats.
Encode or decode URLs and query parameters for safe transmission.
About JWT Tokens
A JSON Web Token (JWT) consists of three Base64URL-encoded parts separated by dots: header.payload.signature. This tool decodes the header and payload, displays all claims with human-readable timestamps, and shows the signature in hexadecimal format. Note: this tool does not verify the signature.