Find files, editable templates and browser test targets by what you need to make or test. The directory below is cut by format; the two collections under it cut the same library by subject and by workflow.
Page 2 of 4; 24 results per page.
An intentionally invalid EPUB that declares chapter3.xhtml in the manifest, the spine and the contents, while the file itself is not in the ZIP. Intentionally invalid and clearly labelled - for testing the difference between a missing resource and an unreadable book.
An intentionally invalid EPUB 3 that ships only an NCX: no manifest item carries properties="nav", which EPUB 3 requires. Intentionally invalid and clearly labelled - it separates readers that fall back to the NCX from readers that refuse to open a book with no navigation document.
An intentionally invalid EPUB whose spine ends with an itemref pointing at a manifest id that does not exist. Intentionally invalid and clearly labelled - the first three chapters are intact, so a reader can recover if it chooses to.
An intentionally invalid EPUB whose second chapter is declared as text/html instead of application/xhtml+xml, making it a foreign resource in the reading order with no fallback. Intentionally invalid and clearly labelled; the bytes of that file are ordinary, valid XHTML.
The left-to-right control for the direction set: identical package structure to the Arabic fixture, differing only in the language tag and the spine direction. A reference point, not a test case on its own.
The same equation carrying the fallbacks a reader without a MathML engine needs: an altimg raster, its declared dimensions and baseline offset, and an alttext reading of the formula for speech. For testing fallback selection and what a screen reader announces.
An EPUB 3 with a block MathML equation and the required properties="mathml" on its content document. The baseline for MathML support, paired with a twin that omits the declaration.
An intentionally invalid EPUB: the content document contains MathML while its manifest item omits properties="mathml", so the package understates what a reader needs. Intentionally invalid and clearly labelled - identical to its declared twin in every other byte of markup.
An EPUB 3 with a real media overlay: a SMIL document ties three paragraph ids to clip ranges in an embedded MP3, and the package declares media:duration and media:active-class. The narration track is deliberately silent audio, so the fixture stays small and byte-identical on every run.
Three chapters, three SMIL overlays and three MP3 tracks, with a media:duration refines entry per overlay plus the package total. For testing whether a reader plays continuously across document boundaries and whether it sums the per-document durations correctly.
A working media overlay whose package omits the required media:duration metadata entirely. Everything else is intact, so this fixture isolates one question: does the reader refuse the overlay, or fall back to measuring the audio itself?
An intentionally invalid media overlay: the second par's text src points at a fragment identifier that does not exist in the chapter. Intentionally invalid and clearly labelled - for testing whether playback skips the orphaned segment, stops dead, or throws.
Two dc:title elements distinguished only by refines chains into title-type and display-seq, a creator with file-as and a MARC relator role, and a series declared with belongs-to-collection. The structure a catalogue actually needs, and the one flat metadata readers collapse into a single confused string.
A title containing two characters above the Basic Multilingual Plane - a blue book and a musical clef - plus a Japanese description. Anything that counts characters as UTF-16 code units, or truncates a title to a byte length, splits a surrogate pair here.
A package document whose title and creator carry precomposed accents, a combining ring above a bare letter, and a typographic apostrophe. For testing normalisation, sorting and filename derivation - the combining mark is the one that breaks naive length and comparison code.
Every non-ASCII character in the metadata is written as a hexadecimal numeric character reference, so the package document is pure ASCII on disk while the title is Han and Cyrillic once parsed. For testing tools that read metadata with a regex instead of an XML parser.
Left-to-right prose with an Arabic run isolated by dir="rtl" and a Latin identifier isolated by dir="ltr" inside an Arabic phrase. The everyday bidi case that breaks when a renderer applies paragraph direction to every character in the paragraph.
A book whose two navigation surfaces tell different stories: the NCX reorders the chapters, omits one, and points at a chapter9.xhtml that does not exist, while nav.xhtml is correct. For testing which surface a reader trusts and how it handles a dead NCX target.
The dual-navigation build every commercial EPUB 3 ships: an XHTML navigation document for EPUB 3 readers and a matching NCX for EPUB 2 ones, listing the same three chapters in the same order.
A conforming EPUB 3 navigated solely by an XHTML navigation document, with no NCX fallback at all. The modern baseline, and the twin of the NCX-only book that inverts it.
An EPUB 3 carrying print-page navigation: a hidden page-list nav, matching pagebreak markers in the content with doc-pagebreak roles, and an equivalent NCX pageList. For testing go-to-page features and the page-number reporting that accessibility conformance asks for.
The reflowable twin of the fixed-layout plate book: rendition:layout is reflowable, nothing is absolutely positioned, and the text is free to rewrap. Use it as the control when checking whether a reader honours the pre-paginated flag or silently reflows everything.
An EPUB 3 in Arabic that declares page-progression-direction="rtl" in the spine, dir="rtl" on the body, and a right-aligned stylesheet. Paired with a left-to-right control carrying the same structure, so a reader's page-turn direction can be checked rather than assumed.
The right-to-left case again in an unconnected script: Hebrew, with the same rtl spine direction and body dir. Arabic shaping and Hebrew ordering fail independently, so a reader that handles one is not proven to handle the other.
