About ToolDeck

ToolDeck is a free collection of developer tools built to make everyday tasks faster. Format JSON, encode Base64, decode JWTs, convert timestamps — all in your browser, with no sign-up, no install, and no data sent to any server.

Every tool on ToolDeck processes your input locally in JavaScript. Nothing you paste into a tool leaves your browser. This makes ToolDeck safe to use with API keys, internal configs, and production data.

The tools are designed for developers who want something that just works — fast load, keyboard-friendly, clean interface, dark mode by default.

Tools available

• JSON Formatter, Validator, Diff, Minifier
• Base64 Encoder / Decoder
• URL Encoder / Decoder
• JWT Decoder
• Unix Timestamp Converter
• JSON ↔ YAML Converter

Contact

Found a bug or have a suggestion? Open an issue or reach out — feedback is always welcome.