Bookery

Beginners' Book Design Mistakes

Harwood W. Loomis

Beginners' Book Design Mistakes
76

Syntax

We use EPUBCheck to ensure that your file adheres to W3C specification. This allows you to minimize interoperability problems and improve the reading experience.

1 error

  • Referenced resource "OEBPS/Content/SLICK_BUT" could not be found in the EPUB.
    OEBPS/Content/Content0005.xhtml, line: 76
38

Accessibility

We use Ace by DAISY to check if your file is usable for as many people as possible, including those who use screen readers, mobile devices and various other assistive technologies.

5 errors

  • Add the missing OPF xml:lang attribute
    • The language must be specified (xml:lang in OPF package)
    Learn more: Language
    OEBPS/content.opf
  • Add a 'schema:accessMode' metadata property to the Package Document
    • Publications must declare the 'schema:accessMode' metadata
    Learn more: Schema.org Accessibility Metadata
    OEBPS/content.opf
  • Add a 'schema:accessibilityFeature' metadata property to the Package Document
    • Publications must declare the 'schema:accessibilityFeature' metadata
    Learn more: Schema.org Accessibility Metadata
    OEBPS/content.opf
  • Add a 'schema:accessibilityHazard' metadata property to the Package Document
    • Publications must declare the 'schema:accessibilityHazard' metadata
    Learn more: Schema.org Accessibility Metadata
    OEBPS/content.opf
  • Links must have discernible text
    • Element is in tab order and does not have accessible text
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Links
    Content/Content0005.xhtml#epubcfi(/4/4/2)
    <a xmlns="http://www.w3.org/1999/xhtml" href="Content0003.xhtml#Dedication"></a>

22 warnings

  • Add a 'schema:accessModeSufficient' metadata property to the Package Document
    • Publications must declare the 'schema:accessModeSufficient' metadata
    Learn more: Schema.org Accessibility Metadata
    OEBPS/content.opf
  • Add a 'schema:accessibilitySummary' metadata property to the Package Document
    • Publications must declare the 'schema:accessibilitySummary' metadata
    Learn more: Schema.org Accessibility Metadata
    OEBPS/content.opf
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0003.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="aToc231255811"></a><span class="tm43"> <img src="Images/img00003.PNG" width="144" height="29" alt="" /><a id="Dedication"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0005.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="aToc231255812"></a><span class="tm43"> <img src="Images/img00004.PNG" width="146" height="29" alt="" /></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0006.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="aToc231255813"></a><span class="tm43"> <img src="Images/img00005.PNG" width="114" height="29" alt="" /><a id="Preface"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0007.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="Acknowledgements"></a><a id="aToc231255814"></a><span class="tm43"> <img src="Images/img00006.PNG" width="291" height="29" alt="" /></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0008.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml"><a id="aToc231255815"></a><span class="tm43"> <img src="Images/img00007.PNG" width="334" height="77" alt="" /><a id="Part1"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0009.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="FrontMatter"></a><a id="aToc231255816"></a><span class="tm43"> <img src="Images/img00008.PNG" width="253" height="29" alt="" /><a id="Chapter1"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0010.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="BookBody"></a><a id="aToc231255831"></a><span class="tm43"> <img src="Images/img00010.PNG" width="220" height="29" alt="" /><a id="Chapter2"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0011.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="BackMatter"></a><a id="aToc231255836"></a><span class="tm43"> <img src="Images/img00011.PNG" width="228" height="29" alt="" /><a id="Chapter3"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0012.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="CommonMistakes4"></a><a id="aToc231255844"></a><span class="tm43"> <img src="Images/img00012.PNG" width="345" height="29" alt="" /><a id="Chapter4"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0013.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml"><a id="aToc231255849"></a><span class="tm43"> <img src="Images/img00013.PNG" width="277" height="77" alt="" /><a id="Part2"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0014.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="aToc231255850"></a><span class="tm43"> <img src="Images/img00014.PNG" width="190" height="29" alt="" /><a id="Chapter5"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0015.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="aToc231255851"></a><span class="tm43"> <img src="Images/img00015.PNG" width="239" height="29" alt="" /><a id="Chapter6"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0016.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="a7___PARAGRAPH"></a><a id="aToc231255856"></a><span class="tm43"> <img src="Images/img00020.PNG" width="354" height="29" alt="" /><a id="Chapter7"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0017.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="a8___FOOTNOTES"></a><a id="aToc231255862"></a><span class="tm43"> <img src="Images/img00023.PNG" width="384" height="25" alt="" /><a id="Chapter8"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0018.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="a9___COMMON"></a><a id="aToc231255863"></a><span class="tm43"> <img src="Images/img00024.PNG" width="335" height="29" alt="" /><a id="Chapter9"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0019.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml"><a id="aPART_3"></a><a id="aToc231255867"></a><span class="tm43"> <img src="Images/img00025.PNG" width="281" height="77" alt="" /><a id="Part3"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0020.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="a10___TYPE"></a><a id="aToc231255868"></a><span class="tm43"> <img src="Images/img00026.PNG" width="329" height="29" alt="" /><a id="Chapter10"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0021.xhtml#epubcfi(/4/2)
    <h2 xmlns="http://www.w3.org/1999/xhtml"><a id="a11___COMMON"></a><a id="aToc231255873"></a><span class="tm43"> <img src="Images/img00030.PNG" width="340" height="29" alt="" /><a id="Chapter11"></a></span></h2>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0022.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="aCONCLUSIONS"></a><a id="aToc231255877"></a><span class="tm43"> <img src="Images/img00032.PNG" width="210" height="29" alt="" /><a id="Conclusions"></a></span></h1>
  • Headings should not be empty
    • Element does not have text that is visible to screen readers
    • aria-label attribute does not exist or is empty
    • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
    • Element has no title attribute
    Learn more: Headings
    Content/Content0023.xhtml#epubcfi(/4/2)
    <h1 xmlns="http://www.w3.org/1999/xhtml" class="tm42"><a id="aABOUT_THE_AUTHOR"></a><a id="aToc231255878"></a><span class="tm43"> <img src="Images/img00033.PNG" width="275" height="29" alt="" /><a id="AuthorBio"></a></span></h1>
We provide more tools like this.
Contact us to learn more!
Write to us at info@bookery.app or leave your email:
Maximum 1 email per month, unsubscribe whenever you want