Tag: EPUBCheck
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How to Automate EPUB 3 Navigation Documents from Content Headings?
Read more: How to Automate EPUB 3 Navigation Documents from Content Headings?EPUB specifications (W3C Recommendation 25 May 2023) mandate the inclusion of an EPUB Navigation Document conforming to the application/xhtml+xml media type and declared in the package manifest (content.opf) with the…
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How SVG ViewBox and FXL Sizing: Fixing HTM_048 Warnings?
Read more: How SVG ViewBox and FXL Sizing: Fixing HTM_048 Warnings?Fixed-layout (FXL) EPUB 3.3 publishing pipelines frequently encounter automated ingestion failure HTM_048: “SVG Fixed-Layout Documents must have a ‘viewBox’ attribute (on the outermost ‘svg’ element)”. This error halts validation across…
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How to Resolve EPUBCheck HTM_004 and HTM_011 Entity Errors in EPUB 3?
Read more: How to Resolve EPUBCheck HTM_004 and HTM_011 Entity Errors in EPUB 3?EPUB 3.3 defines XHTML Content Documents strictly as XML serializations conforming to the W3C Extensible Markup Language (XML) 1.0 (Fifth Edition) specification. Under XML 1.0 ยง4.6, only five character entity…