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
  • Machine-readable docs — share tool settings via URL hash (#key=value). Tool index and parameter specs at 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

Both tool pages and blog articles explain how things work and the pitfalls you hit in practice—not just how to click the UI. Articles are published in Japanese and English and link to the related tools.

Editorial principles

  • Original writing — we do not republish content from other sites. Drafts are AI-assisted and reviewed before publication
  • Grounded in implementation — tool copy references behavior in logic.ts and unit tests
  • Practical focus — beyond textbook definitions, we prioritize traps and best practices from real implementation and operations
  • Japanese and English — each locale gets its own text (not a single language run through machine translation)
  • Living documents — we revisit articles and tool copy as specs and best practices change

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