AirPortal（空投快传）是一个可以跨设备传输文件的网站。只要您的设备联网，您就可以通过它在任意系统、任意设备间传输文件。无需登录或注册，只需打开空投快传、直接上传文件、记住所给的取件码或直接扫描二维码即可在另一台设备上下载文件。
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这里可以实现关于 PDF 的一系列操作，当然也包括将 PDF 转为 PPT。Smallpdf - the platform that makes it super easy to convert and edit all your PDF files. Solving all your PDF problems in one place - and yes, free.
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QRBTF 参数化二维码生成器 Parametric QR Code Generator
