Edit the metadata of EPUB files. EPub Metadata Editor can view and edit the EPub data. You can easily change (or add) a cover by right-clicking on the cover image box.
If you have an EPUB viewer, you can link to it easily. There is also an advanced pane that allows for certain batch operations as well as editing of the OPF and TOC.NCX files.

The license of this software is Free, you can free download and free use this file converter software.