Methods for synchronizing large files with a cloud network

A computer-implemented method for synchronizing files to multiple local computing devices using a cloud network, comprising:

• providing a cloud server that provides cloud storage services to a plurality of user accounts, each user account associated with a plurality of local computing devices, wherein the plurality of local computing devices includes at least a first local computing device and a mobile device;
• and
• providing a copy engine that performs cloud storage services for each of the plurality of user accounts by receiving at the cloud server a photo or video file from one or more of the plurality of local computing devices and storing copies of the photo or video file on the plurality of local computing devices, respectively, and in association with a articular user account, wherein storing the copies includes:
• storing a first copy of the photo or video file in a lossless format on the first local computing device in association with the particular user account;
• providing a second copy of the photo or video file in a lossy format and storing the second copy of the photograph or video file on the mobile device in association with the particular user account;
• and
• identifying a change made by a user to any one of the copies of the photograph or video file stored on the plurality of local computing devices and updating one or more of the other copies of the photo or video file to include the change.