img src 在这个数字化时代，一张图片往往能比文字更直观地传达信息，而标签则是网页中用于嵌入图片的关键元素。它不仅让网页内容更加丰富多彩，也让信息的传递变得更加高效。

1. 标签的基本用法

标签是HTML语言中用于插入图片的标准标签。其基本语法如下：

其中，src属性是必须的，用于指定图片的路径。alt属性则提供了当图片无法显示时的替代文本，对于提升网页的可访问性非常重要。title属性可以用来定义鼠标悬停时显示的文本，而width和height属性则用于设置图片的尺寸。

2. 图片路径的类型

图片路径主要有以下几种类型：

1. 绝对路径：以协议、域名、目录等形式表示，如http://www.example.com/images/image.jpg。

2. 相对路径：相对于当前页面的路径，如images/image.jpg。

3. 数据URL：将图片转换为Base64编码，直接嵌入到HTML中，如data:image/jpeg;base64,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