Epub 7z 001 NEW!
another common error i was getting was extra characters in mimetype 'Mimetype file should only contain the string 'application/epub+zip' and should not be compressed'I found that my editor Geany was adding a newline when I saved the file and this caused an epubcheck error - a tweak in Geany's preferences fixed this error and epubcheck returned no errors
Epub 7z 001
On Windows 7 I fixed it with this strange trick where i made sure that I sorted all of the files that i was going to make in to a zip in a way that made mimetype the file on top (sorting them by size usually). Then I made sure that i marked all of the files from top to bottom with my cursor before sending them to a compressed (zip) folder (like this: -us/help/14200/windows-compress-uncompress-zip-files). After that I could change the name and filetype to whatever.epub.
If you are simply interested in getting a valid epub file (like me), it is sufficient to simply use the WinRar windows application. Select the two folders EPUB and META-INF and the mimetype file and in the context menu choose "add to archive".When in the WinRar dialogue open the tab "files" and exclude the mimetype file from being compressed by typing its name into the corresponding input field. No need to use a two-pass process.
Tried it on various files, some epub and mobi, over various days per your and their instructions. This might have worked back in 2015 or before whenever, but it does abslolutely squat now, and if if by chance it actually TRIES to unzip any file clicked it times out, gives error message, etcetera, and never actually downloads anything, tried 2 dozen files, ZILCH
EPUB: Initially designed to represent textual e-books, it can handle images as well. It is free and open-source and it's basically a zip containing structured information on how to display a book. Formatting is HTML that can reference resource images. In Cover, since we only wanted to handle images in epub files (we don't have controls to change font size, line height,..), we just implemented our own basic reader that extracts the images and considers each image is a page. 041b061a72