The invention relates to an
archive file previewing method, front-end equipment, a back-end
server and a storage medium, and particularly relates to the technical field of
digitization. Comprising the steps that when a preview operation is responded, a front end obtains the data volume and the
fragment size of a target
archive file from a rear end according to needs, one-time loading of large files is avoided, the
data transmission amount is reduced, and the loading time consumption under the limited bandwidth is reduced. Meanwhile, the rendering area is determined according to the data volume, the
fragment size and the page size, the preview range is defined in combination with a page rolling stop event,
invalid data loading is further avoided, and the file preview efficiency is improved. Besides, by concurrently sending a plurality of file acquisition requests corresponding to the preview range, limited bandwidth resources are fully utilized, and a plurality of file fragment data are synchronously acquired, so that the file
stream data acquisition speed is remarkably increased, the file preview loading time is greatly shortened, the online large file preview experience of a user is effectively improved, and the user experience is improved. The problem that online utilization is affected by slow loading of large files is solved.