Password Strength Checker - a free online tool for analyzing password security and entropy. No installation required, works instantly in your browser.
免费在线密码强度检测工具，实时评估密码安全性、计算熵值（bits），检测常见弱口令与重复/连续字符，并给出改进建议。
用户难以判断自己设置的密码是否足够安全，容易使用弱密码导致账户被破解。
Lorem Ipsum Generator - free online tool to create random placeholder text instantly, no installation required.
Content-Type Lookup - an online MIME type reference tool. Free, instant access, no installation required.
输入：用户输入的密码字符串。输出：密码强度等级、进度条、检查列表（各项是否达标）、统计信息（长度、字符池、熵值）、改进建议。
适合所有需要创建或评估密码安全性的普通用户、网站管理员或安全爱好者。
Periodic Table - an online chemistry element reference tool. Free, instant access, no installation required.
Unicode Lookup - a free online tool to search Unicode characters and look up code points. No installation required, works instantly in your browser.
Word Cloud Generator - a free online tool for visualizing text frequency. No installation required, works instantly in your browser.
Markdown Preview - Online Markdown Editor — a free online tool that works instantly, no installation required.