40+ tools · 100% client-side

Developer & finance tools
that just work.

A fast, no-nonsense toolbox — encode, format, convert, calculate. Everything runs locally in your browser. No sign-up, nothing to install.

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Every tool runs in your browser — no round-trips, no waiting.

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Your data never leaves the device. No accounts, no tracking.

Built for builders

Encoders, formatters, validators and converters that just work.

Finance utilities

Plan, calculate and analyze with clear, no-clutter calculators.

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Featured tools

A taste of what's inside. Browse the full catalog of 40+ utilities.

API Response Mock Generator

Generate realistic mock data from TypeScript interfaces. Supports multiple types with customizable counts and exports to JSON, CSV, XML, YAML, or SQL formats.

Create and read cron expressions with human-friendly previews.

Loan Calculator

Calculate loan payments, interest rates, and amortization schedules with ease.

Password Generator and Validator

Generate and Validate cryptographically secure passwords and test password strength using zxcvbn. Includes customizable options for uppercase, numbers, and symbols with real-time strength analysis.

Browse all 40+ tools