EPUB Book Metadata & TOC Inspector
Read the first OPF rendition selected by container.xml, all DC elements and refinements, declared ISBN identifiers, original cover bytes, and complete NCX / EPUB navigation trees. The JSON outline preserves nesting and targets. Cover resolution is unchanged; an absent cover or navigation is reported.
About this epub book metadata & toc inspector
Read the first OPF rendition selected by container.xml, all DC elements and refinements, declared ISBN identifiers, original cover bytes, and complete NCX / EPUB navigation trees. The JSON outline preserves nesting and targets. Cover resolution is unchanged; an absent cover or navigation is reported Parses and structures office document payloads locally in memory without transmitting private company files to external servers.
Document parsing & data extraction pipeline
Inspects, parses, and converts open publishing and scheduling formats conforming to IDPF EPUB 3.2 / 3.3 specifications, IETF RFC 5545 (iCalendar - .ics), and RFC 6350 (vCard v4.0 - .vcf). EPUB tools unpack the OCF (Open Container Format) ZIP package, parsing META-INF/container.xml and the OPF (Open Packaging Format) package document to extract Dublin Core metadata (dc:title, dc:creator, dc:identifier), spine order, manifest items, and table of contents (NCX / Nav doc), converting chapters to Markdown.
Worked document extraction example
Scenario: Execute EPUB Book Metadata & TOC Inspector with sample data to verify transformation accuracy and output formatting.
Sample input:
Processing: After the page loads, processing runs locally in a Worker without uploading the file. Cancel or clear stops the task.
Illustrative output:
File size & structure constraints
EPUB input must be strictly smaller than 100,000,000 bytes. Limits: 100,000 ZIP entries; 16 MiB per XML; 64 MiB per other selected part; 128 MiB selected data; XML depth 128 and 1,000,000 nodes; 64 MiB text output; 30 seconds including file reading. Very complex ODT repetition can reach the output budget earlier. Encrypted selected content, external reading resources, DTDs and non-XHTML spine items are rejected. Only the first rendition is read; this is not a conformance validator or a native reading application. Preview pages contain 16,000 characters. Downloads are complete. JSON keys, package paths and original metadata are technical/source values, not interface translations. Picture ZIPs support at most 65,535 files.
EPUB Book Metadata & TOC Inspector parses structured OpenXML and PDF data locally. Review exported tables or sheets against original files.
Zero-upload document security boundary
File buffers and document assets in EPUB Book Metadata & TOC Inspector are processed in-memory via local browser APIs with zero file uploads to CZOA servers.
Document schemas & interchange standards
ECMA-376 Office Open XML specifications and ISO 32000 PDF reference standards:
EPUB Book Metadata & TOC Inspector verification · Audit standards
How to use it
- Choose a local EPUB / ODT
- Process locally
- Download selected file
Frequently asked questions
What does the EPUB Book Metadata & TOC Inspector produce?+
Operational requirements for "What does the EPUB Book Metadata & TOC Inspector produce?" are verified in local memory during execution of EPUB Book Metadata & TOC Inspector.
What limits and privacy rules apply?+
Boundary constraints concerning "What limits and privacy rules apply?" prevent invalid parameter state mutations client-side.
How do previews and downloads differ?+
Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Preview pages contain 16,000 characters. Downloads are complete.
Can I run a local example?+
The undefined workflow specifically processes input within epub-inspector: Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Specifically for EPUB Book Metadata & TOC Inspector (epub-inspector): Choose a local EPUB / ODT → /examples/publication-example.epub → Process locally → Download selected file