🔧 Online Tools

Free, efficient, ready-to-use developer tools that run entirely in your browser — no data ever uploaded to any server.

⚡ Client-Side 🔒 Privacy Safe 📱 Mobile Ready 🌙 Dark Mode

Generate strong random passwords with uppercase, lowercase, numbers, and symbols. Real-time strength rating.

Instant conversion between length, mass, temperature, volume, area, speed, and more.

Real-time character, word, line, and paragraph count. Supports mixed Chinese/English text analysis.

One-click conversion to UPPER, lower, Title Case, camelCase, snake_case, PascalCase, and more.

Generate UUID v4 random identifiers with batch mode, one-click copy, and case toggle.

Convert between HEX, RGB, HSL, and HSV formats with a color picker, history, and live preview.