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Validating the EPUB package
Validation is very vital and should not be ignored. The pagina EPUB-Checker and the DAISY-ACE are open-source tools used in the validation of EPUB files.
Validating Using the Pagina EPUB-Checker
OCF container structure, OPF and OPS mark-up, and internal reference consistency are checked using the tool.
To validate the Book+X.epub file:
- Launch the pagina EPUB-Checker
- Click on "Choose EPUB file" to open the explorer.
- Navigate to the location on where you were working on template, and select the EPUB file that was generated by the eCanCrusher.
- Click "Open" to initiate the validation. Wait for the validation result.
- If the epub is not valid, the errors/warnings will be displayed with the location of the file generating the error specified.
- DELETE the EPUB file you validated and REPEAT the process from the STEP 4 after making the changes. Validate the EPUB iteratively until all issues have been resolved.
- If the EPUB is valid, this is the screen you expect to see:
Validating Using the DAISY-ACE
Ace, the Accessibility Checker for EPUB, is a tool developed by the DAISY Consortium to assist with the evaluation of accessibility features of EPUB publications.
To check Book_X.epub with the DAISY ACE:
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Run the command below. You can specify the directory for Ace to store its output with the --outdir option (which is the Ace_Report folder we created)
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ace --outdir "Ace_Report" "Book_X.epub" |
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can test the image descriptions using the NVDA software while using the VitalSource Bookshelf.
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Go out and test with your users!