> For the complete documentation index, see [llms.txt](https://docs.gpmautomate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gpmautomate.com/automate-zh/cao-zuo-zhi-nan/image-search/image-to-base64.md).

# 图像转Base64

此操作可以将计算机上的图像文件编码为一串文本字符（Base64字符串）。

* 作用：在需要通过网络命令如`HTTP Request`发送图像时极为有用。例如：您想将图像发送到AI服务以解码验证码，或将图像上传到服务器而不想以常规方式传输文件。

#### 配置参数：

* 图像路径：指向需要转换的计算机上图像文件的绝对路径（例如：`D:\GPM_Data\captcha.png`）。
* 输出变量：成功编码后保存Base64字符串的变量名称。

#### 实际示例：转换验证码图像以通过API发送到自动解码系统

当您导航到一个网站并遇到图像验证码时。您已经使用截图操作捕捉到包含验证码的区域，并将其保存为`D:\GPM_Data\captcha.png`的图像文件。现在，您想将此图像发送到第三方API（如2Captcha，Anti-Captcha）以请求他们代为解码。由于他们的API要求图像数据必须以Base64文本字符串的形式提供，您将进行如下配置：

* 步骤1：调用图像转Base64操作。
  * 图像路径：填写`D:\GPM_Data\captcha.png`。
  * 输出变量：将变量命名为`base64String`。
* 步骤2：调用HTTP请求操作（方法POST）以将数据发送到解码验证码的服务器。在数据（主体）部分，您将变量`$base64String`传入符合他们API文档的JSON结构中。

结果：图像文件`captcha.png`将被转换为一串长长的字符编码，形式为`data:image/png;base64,iVBORw0KGgoAAAANSU...`，并存储在变量`$base64String`中。后续的HTTP请求只需将此字符串整齐地发送出去，帮助自动脚本轻松绕过验证码的安全层。


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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.gpmautomate.com/automate-zh/cao-zuo-zhi-nan/image-search/image-to-base64.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
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