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Transform Your Developer Workflow

Free, fast, and privacy-focused tools for developers. JSON validators, converters, calculators, and more — all running locally in your browser.

Free Tools

100%

Client-Side

Data Stored

∞

Usage Limit

Developer Tools

Essential utilities for your daily development workflow. Fast, reliable, and always free.

Validate, format, and minify JSON with syntax highlighting and error detection.

Convert Excel spreadsheets to JSON format instantly in your browser.

Calculate your SIP returns and plan your mutual fund investments.

Calculate income tax under old and new regime for FY 2024-25.

Decode and inspect JWT tokens with header and payload view.

Convert between YAML and JSON. Perfect for K8s and Docker configs.

Convert JSON to TOON for LLM prompts. ~40% fewer tokens than JSON.

All tools run locally in your browser. Your data never leaves your device.

No server roundtrips. Instant results powered by modern JavaScript.

No sign-up, no limits, no hidden fees. Use as much as you need.

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