{"action":"created","issue":{"url":"https://api.github.com/repos/imposters-handbook/feedback/issues/48","repository_url":"https://api.github.com/repos/imposters-handbook/feedback","labels_url":"https://api.github.com/repos/imposters-handbook/feedback/issues/48/labels{/name}","comments_url":"https://api.github.com/repos/imposters-handbook/feedback/issues/48/comments","events_url":"https://api.github.com/repos/imposters-handbook/feedback/issues/48/events","html_url":"https://github.com/imposters-handbook/feedback/issues/48","id":172362018,"number":48,"title":"Suggestion: Use epubcheck as validation tool for your EPUB file","user":{"login":"milmazz","id":34700,"avatar_url":"https://avatars.githubusercontent.com/u/34700?v=3","gravatar_id":"","url":"https://api.github.com/users/milmazz","html_url":"https://github.com/milmazz","followers_url":"https://api.github.com/users/milmazz/followers","following_url":"https://api.github.com/users/milmazz/following{/other_user}","gists_url":"https://api.github.com/users/milmazz/gists{/gist_id}","starred_url":"https://api.github.com/users/milmazz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/milmazz/subscriptions","organizations_url":"https://api.github.com/users/milmazz/orgs","repos_url":"https://api.github.com/users/milmazz/repos","events_url":"https://api.github.com/users/milmazz/events{/privacy}","received_events_url":"https://api.github.com/users/milmazz/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2016-08-22T03:13:58Z","updated_at":"2016-08-22T03:35:41Z","closed_at":null,"body":"Hi, first of all, congratulations for your great work, I read today about your book and I bought it immediately :)\r\n\r\nYou could validate your EPUB file using [epubcheck][], it's great to catch some errors like, missing `alt` attribute in images (good for screen readers for example) , or referenced resources that could be not be found in the EPUB, among others.\r\n\r\nThis is the current log for the [imposter_pre_002.epub](https://github.com/imposters-handbook/feedback/files/429296/epubcheck.txt) document.\r\n\r\n[epubcheck]: https://github.com/IDPF/epubcheck"},"comment":{"url":"https://api.github.com/repos/imposters-handbook/feedback/issues/comments/241308245","html_url":"https://github.com/imposters-handbook/feedback/issues/48#issuecomment-241308245","issue_url":"https://api.github.com/repos/imposters-handbook/feedback/issues/48","id":241308245,"user":{"login":"milmazz","id":34700,"avatar_url":"https://avatars.githubusercontent.com/u/34700?v=3","gravatar_id":"","url":"https://api.github.com/users/milmazz","html_url":"https://github.com/milmazz","followers_url":"https://api.github.com/users/milmazz/followers","following_url":"https://api.github.com/users/milmazz/following{/other_user}","gists_url":"https://api.github.com/users/milmazz/gists{/gist_id}","starred_url":"https://api.github.com/users/milmazz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/milmazz/subscriptions","organizations_url":"https://api.github.com/users/milmazz/orgs","repos_url":"https://api.github.com/users/milmazz/repos","events_url":"https://api.github.com/users/milmazz/events{/privacy}","received_events_url":"https://api.github.com/users/milmazz/received_events","type":"User","site_admin":false},"created_at":"2016-08-22T03:35:40Z","updated_at":"2016-08-22T03:35:40Z","body":"@robconery Your `META-INF/container.xml` points to `content.opf`, in that file, you'll see that the EPUB version is *2*. So, I think that's why `epubcheck` apply the rules against EPUB 2. \r\n\r\n```\r\n$ cat META-INF/container.xml\r\n<?xml version=\"1.0\"?>\r\n<container version=\"1.0\" xmlns=\"urn:oasis:names:tc:opendocument:xmlns:container\">\r\n   <rootfiles>\r\n      <rootfile full-path=\"content.opf\" media-type=\"application/oebps-package+xml\"/>\r\n\r\n   </rootfiles>\r\n</container>\r\n\r\n$ grep -E \"^<package\" content.opf\r\n<package xmlns=\"http://www.idpf.org/2007/opf\" unique-identifier=\"uuid_id\" version=\"2.0\">\r\n```\r\n\r\nHTH"}}
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