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Punycode Converter
Convert International Domain Names between Unicode and Punycode (ASCII) format for DNS configuration and international domain registration.
Network
HTML Encoder
Convert special characters to HTML entities and decode HTML entities back to characters. Free online HTML encoding tool.
Developer World
Color Converter
Convert between color formats including HEX, RGB, RGBA, HSL, and HSV. Free online color code converter with preview.
Conversion
Day/Night Length Calculator
Calculate the length of daylight, night, and twilight periods for any location and date. Track seasonal changes in day/night duration.
Astronomy