Technique for displaying thumbnail images on an information processing device

A non-transitory computer-readable storage medium storing computer-readable instructions for an information processing device,

• the computer-readable instructions, when executed by a processor of the information processing device, causing the information processing device to perform:
• receiving a file selecting operation for selecting a particular file from among one or more files in a memory of the information processing device;
• sending the selected particular file and a registering request to a first server via the Internet, the registering request indicating a request for registering file information in the first server, the file information being generated by the first server which received the registering request, the file information including identification information for identifying the selected particular file;
• obtaining thumbnail image data of the selected particular file;
• receiving the identification information from the first server via the Internet on a condition that the registering request has been sent to the first server;
• storing the thumbnail image data and the identification information in the memory in association with one another;
• receiving a first access operation for accessing K items of file information registered in the first server, while the K items of file information are registered in the first server, the K being an integer of one or more;
• in response to receiving the first access operation, sending, to the first server via the Internet, a first access request for accessing the K items of file information registered in the first server;
• in response to sending the first access request, receiving, from the first server, K items of the identification information included in the K items of file information registered in the first server;
• and
• in response to receiving the K items of identification information, retrieving the K items of thumbnail image data stored in the memory in association with the K items of identification information and controlling a displaying unit of the information processing device to display a first screen including K items of thumbnail images represented by the retrieved K items of thumbnail image data.