About Orankit

Orankit is a collection of online tools designed to simplify your everyday tasks. From character counting and password generation to JSON formatting and unit conversion, we offer a wide range of free tools for everyone.

What Makes Orankit Different

Every tool runs entirely in your browser — no data is ever sent to a server. There's no account to create and nothing to install. Just open a tool and start using it. Available in both Japanese and English, Orankit is built for users around the world.

Designed for Everyone

Orankit tools are designed to be intuitive, requiring no technical expertise. Whether you're a student, writer, designer, developer, or business professional, you'll find tools that help with your daily workflow.

Key Features

  • 100% Browser-Based — Your input data never leaves your device, keeping your privacy intact
  • Completely Free — No account required, no usage limits on any tool
  • Multilingual — Available in Japanese and English, with automatic language detection
  • AI-Ready — Supports LLMs.txt and URL hash parameters, enabling AI agents to invoke tools directly（LLMs.txt）

Topics We Cover

Orankit's tools and blog articles span the following areas:

  • Text processing — character counting, case conversion, string sorting, regex testing, and more
  • Developer utilities — JSON formatting, JWT decoding, Base64, hash generation, UUIDs, cron expressions, CIDR calculations
  • Design and CSS — color palettes, gradients, aspect ratios, contrast checking, shadow generation
  • Math and calculations — BMI, age, percentages, discounts, loans, primality testing, statistics
  • Date and time — timestamp conversion, time zones, day-count math, day-of-week, era-year conversion
  • Miscellaneous — QR codes, image compression, dice rolling, random pickers, temperature conversion

Blog Articles and Editorial Principles

Beyond the tools themselves, we publish blog articles explaining the mechanisms, history, and real-world pitfalls behind them. Every article is published in both Japanese and English and links to the related tool.

Editorial principles

  • Original writing — no reposts from other sites or pure AI-generated content; we synthesize from a perspective worth reading
  • Practical focus — beyond textbook definitions, we surface the traps and best practices encountered in actual implementation and operations
  • True bilingual — JA and EN articles are independently authored, not machine-translated
  • Living documents — articles get updated as specifications change and best practices evolve

We currently offer 111 tools and are always adding more based on user needs.