[DNSB]

Originally Posted by hobnail

Any idea what happens if you use the Polish function and then instead of using Calibre's send to device button you were to open the folder the book is in (in Calibre's library) and drag it onto the Kobo; does the Kobo pick up the series info, for epub2s since the series info inside the book is Calibre-specific.

The Kobo would not pick up the series info since while calibre's series info is as close to a standard as there is for epub2, it is not a standard nor is it Dublin Core metadata. By the way, when you send an ebook to a Kobo or do a save to disk, the metadata is embedded into the output file.

For comparison, the first spoiler is the content.opf from the ebook in calibre while the second is from the ebook as sent to a Kobo.

Spoiler:

<?xml version="1.0" encoding="utf-8"?>
<package version="2.0" unique-identifier="BookId" xmlns="http://www.idpf.org/2007/opf">
  <metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">
    <dc:identifier opf:scheme="UUID" id="BookId">urn:uuid:53dd7266-626d-4a86-ac35-95aaa6932150</dc:identifier>
    <dc:language>en</dc:language>
    <dc:title>[Title here]</dc:title>
    <meta name="Sigil version" content="1.3.0" />
    <dc:date xmlns:opf="http://www.idpf.org/2007/opf" opf:event="modification">2020-11-05</dc:date>
  </metadata>
  <manifest>
    <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
    <item id="Section0001.xhtml" href="Text/Section0001.xhtml" media-type="application/xhtml+xml"/>
    <item id="Style0001.css" href="Styles/Style0001.css" media-type="text/css"/>
  </manifest>
  <spine toc="ncx">
    <itemref idref="Section0001.xhtml"/>
  </spine>
</package>

Spoiler:

<?xml version="1.0" encoding="utf-8"?>
<package version="2.0" unique-identifier="BookId" xmlns="http://www.idpf.org/2007/opf">
  <metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">
    <dc:title>Espace Vital</dc:title>
    <dc:creator opf:role="aut" opf:file-as="Asimov, Isaac">Isaac Asimov</dc:creator>
    <dc:identifier opf:scheme="UUID" id="BookId">urn:uuid:53dd7266-626d-4a86-ac35-95aaa6932150</dc:identifier>
    <dc:date>2020-11-05T08:00:00+00:00</dc:date>
    <dc:language>en</dc:language>
    <dc:identifier opf:scheme="calibre">756d9c4c-7567-4fc7-8ffb-58babb3c439c</dc:identifier>
    <meta name="Sigil version" content="1.3.0" />
    <meta name="calibre:title_sort" content="Espace Vital" />
    <meta name="calibre:series" content="Espace" />
    <meta name="calibre:series_index" content="4.25" />
    <meta name="calibre:author_link_map" content="{&quot;Isaac Asimov&quot;: &quot;&quot;}" />
    <meta name="cover" content="cover" />
    <meta name="calibre:user_metadata:#author_sort" content="{&quot;table&quot;: &quot;custom_column_1&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;composite&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Author Sort&quot;, &quot;search_terms&quot;: [&quot;#author_sort&quot;], &quot;label&quot;: &quot;author_sort&quot;, &quot;colnum&quot;: 1, &quot;display&quot;: {&quot;description&quot;: &quot;&quot;, &quot;contains_html&quot;: false, &quot;composite_sort&quot;: &quot;text&quot;, &quot;use_decorations&quot;: 0, &quot;make_category&quot;: false, &quot;composite_template&quot;: &quot;{author_sort}&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 22, &quot;#value#&quot;: &quot;Asimov, Isaac&quot;, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#finished" content="{&quot;table&quot;: &quot;custom_column_6&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;composite&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Finished&quot;, &quot;search_terms&quot;: [&quot;#finished&quot;], &quot;label&quot;: &quot;finished&quot;, &quot;colnum&quot;: 6, &quot;display&quot;: {&quot;use_decorations&quot;: 0, &quot;composite_sort&quot;: &quot;text&quot;, &quot;make_category&quot;: false, &quot;description&quot;: &quot;&quot;, &quot;contains_html&quot;: false, &quot;composite_template&quot;: &quot;{:'cmp(field('#koboreadpct'),100,'','Finished','Finished')'}&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 23, &quot;#value#&quot;: &quot;&quot;, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#kobolastread" content="{&quot;table&quot;: &quot;custom_column_4&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;datetime&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Kobo Last Read&quot;, &quot;search_terms&quot;: [&quot;#kobolastread&quot;], &quot;label&quot;: &quot;kobolastread&quot;, &quot;colnum&quot;: 4, &quot;display&quot;: {&quot;date_format&quot;: null, &quot;description&quot;: &quot;&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 24, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#koborating" content="{&quot;table&quot;: &quot;custom_column_5&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;int&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Kobo Rating&quot;, &quot;search_terms&quot;: [&quot;#koborating&quot;], &quot;label&quot;: &quot;koborating&quot;, &quot;colnum&quot;: 5, &quot;display&quot;: {&quot;number_format&quot;: null, &quot;description&quot;: &quot;&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 25, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#koboreadloc" content="{&quot;table&quot;: &quot;custom_column_7&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;text&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Kobo Reading Location&quot;, &quot;search_terms&quot;: [&quot;#koboreadloc&quot;], &quot;label&quot;: &quot;koboreadloc&quot;, &quot;colnum&quot;: 7, &quot;display&quot;: {&quot;use_decorations&quot;: 0, &quot;description&quot;: &quot;&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: true, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 26, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#koboreadpct" content="{&quot;table&quot;: &quot;custom_column_3&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;int&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Kobo Read Percent&quot;, &quot;search_terms&quot;: [&quot;#koboreadpct&quot;], &quot;label&quot;: &quot;koboreadpct&quot;, &quot;colnum&quot;: 3, &quot;display&quot;: {&quot;number_format&quot;: null, &quot;description&quot;: &quot;&quot;}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 27, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#mm_annotations" content="{&quot;table&quot;: &quot;custom_column_2&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;comments&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Annotations&quot;, &quot;search_terms&quot;: [&quot;#mm_annotations&quot;], &quot;label&quot;: &quot;mm_annotations&quot;, &quot;colnum&quot;: 2, &quot;display&quot;: {}, &quot;is_custom&quot;: true, &quot;is_category&quot;: false, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 28, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
    <meta name="calibre:user_metadata:#subtitle" content="{&quot;table&quot;: &quot;custom_column_8&quot;, &quot;column&quot;: &quot;value&quot;, &quot;datatype&quot;: &quot;text&quot;, &quot;is_multiple&quot;: null, &quot;kind&quot;: &quot;field&quot;, &quot;name&quot;: &quot;Subtitle&quot;, &quot;search_terms&quot;: [&quot;#subtitle&quot;], &quot;label&quot;: &quot;subtitle&quot;, &quot;colnum&quot;: 8, &quot;display&quot;: {&quot;description&quot;: &quot;&quot;, &quot;use_decorations&quot;: 0}, &quot;is_custom&quot;: true, &quot;is_category&quot;: true, &quot;link_column&quot;: &quot;value&quot;, &quot;category_sort&quot;: &quot;value&quot;, &quot;is_csp&quot;: false, &quot;is_editable&quot;: true, &quot;rec_index&quot;: 29, &quot;#value#&quot;: null, &quot;#extra#&quot;: null, &quot;is_multiple2&quot;: {}}" />
  </metadata>
  <manifest>
    <item id="Section0001.xhtml" href="Text/Section0001.xhtml" media-type="application/xhtml+xml"/>
    <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
    <item id="Style0001.css" href="Styles/Style0001.css" media-type="text/css"/>
    <item id="cover" href="OEBPS/cover.jpg" media-type="image/jpeg"/>
  </manifest>
  <spine toc="ncx">
    <itemref idref="Section0001.xhtml"/>
  </spine>
</package>