QR Code Decoder - Free online tool to scan and recognize QR codes instantly, no installation required.
免费在线二维码解码工具，支持上传图片或摄像头实时扫描，基于jsQR在浏览器本地识别并提取二维码内容。
用户需要快速识别二维码内容，但缺乏专门的解码工具，或担心在线工具上传数据泄露隐私。
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：用户上传的二维码图片或通过摄像头捕捉的二维码画面。输出：解码后的文本内容，显示在结果区域，并可一键复制。
需要快速解码二维码内容的普通用户、开发者或经常处理二维码信息的人员。
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.