Utility Tools

实用工具集，包括进制转换、编码查询、Cron工具等

All-in-one sheet toolkit: CSV ↔ Excel locally

All-in-one barcode/QR toolkit: generate and read

Turn an image or text into a full 16x16-512x512 favicon set, export ICO, PNG, ZIP bundle and HTML tags

Convert between byte, KB, MB, GB, TB file size units

Parse browser User-Agent string, identify device info

Look up IP address geolocation and network info

Parse and format international phone numbers, identify country/region, calling code and number type

All-in-one random toolkit: number, lucky draw, dice, list shuffle

Check password strength and security in real time with entropy scoring and weak-password rules — all computed locally

Online scientific calculator: arithmetic, parentheses, powers and common math functions like sin/cos/tan/√/log/ln, with live results