SWF 格式是什么文件，用什么打开？

SWF格式是swf的文件是一种Flash动画文件，可以使用InternetExplorer浏览器打开，具体操作步骤如下：

1、首先找到并用鼠标右键点击要打开的swf文件，点击打开方式。

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2、然后在右键菜单里找到并点击选择InternetExplorer选项。

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3、然后打开IE浏览器后提示限制运行。

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4、右击提示那一栏，选择允许阻止的内容。

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5、打开后就可以看到swf的动画内容了。