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Mug photo with deliberate overexposed for testing auto-enhance and colour/exposure correction against the clean reference.
Severely underexposed fruit scene for enhancement / brighten tools.
Mug photo with deliberate underexposed for testing auto-enhance and colour/exposure correction against the clean reference.
Mug photo with deliberate warm cast for testing auto-enhance and colour/exposure correction against the clean reference.
Labels and default values made of characters that have to be escaped in HTML - ampersands, angle brackets, both quote marks and a non-breaking space. A parser that decodes entities once too often or not at all produces visibly wrong text here.
A sample environment (.env) file with typical configuration keys and placeholder values, for testing dotenv parsers and config loaders. Contains no real secrets.
SAMPLE .env file (comments-edge) for dotenv parser and config-loader tests: placeholders only.
SAMPLE .env file (development) for dotenv parser and config-loader tests: placeholders only.
SAMPLE .env file (production-template) for dotenv parser and config-loader tests: placeholders only.
SAMPLE .env file (testing) for dotenv parser and config-loader tests: placeholders only.
Forty service-mesh proxy access records with the fields that make mesh debugging possible: response_flags distinguishing an upstream failure from an overflow, upstream_service_time against total duration, upstream host and cluster, and a request ID for correlation.
An isometric cube as Encapsulated PostScript: a 2D vector illustration with three shaded faces. For testing EPS/PostScript rendering and vector conversion.
A plain EPUB 2.0.1 build of a two-chapter book: NCX navigation, an OPF guide with cover and text references, and the meta name="cover" convention. One third of a conversion set that also ships as EPUB 3 and FB2.
The cover convention that predates every standard way of doing it: a bare meta name="cover" pointing at a manifest id, with no guide reference, no cover XHTML page and nothing in the spine. For testing cover extraction against the messiest of the three EPUB 2 conventions.
An EPUB 2.0.1 that records print pagination the older way: an NCX pageList of pageTarget elements pointing at anchors in the text. The EPUB 2 counterpart of the EPUB 3 page-list nav, and what a converter has to translate between.
A valid EPUB 2.0.1 e-book navigated by an NCX table of contents and an OPF <guide>, with a cover: the older EPUB edition. Paired with an identical EPUB 3 twin for testing EPUB2↔EPUB3 conversion.
The EPUB 3 build of the same two chapters: an XHTML navigation document with an NCX kept for older readers, and the cover declared as a manifest property. The middle member of the EPUB2 / EPUB3 / FB2 conversion set.
The same book obfuscated the other way: Adobe's scheme XORs the first 1024 bytes with the sixteen raw bytes of the identifier UUID. Two schemes, two byte counts, two algorithm URIs - the pair that catches a reader which implements only one and assumes the other.
The same book with its embedded font obfuscated by the IDPF algorithm: the first 1040 bytes are XORed with the SHA-1 of the whitespace-stripped unique identifier, and META-INF/encryption.xml declares it. Paired with the plain-embedding twin so a de-obfuscator can be checked byte for byte.
An intentionally invalid EPUB whose embedded font is IDPF-obfuscated while META-INF/encryption.xml is missing, so nothing in the container says the bytes were scrambled. Intentionally invalid and clearly labelled - this is the real-world failure where a book silently renders in a substitute face.
An EPUB 3 that embeds a TrueType face through @font-face with no obfuscation and no META-INF/encryption.xml. The control member of the obfuscation set: extract the font and it is a working TTF.
A fixed-layout EPUB 3: rendition:layout is pre-paginated, every page declares a 600x800 viewport, and all content is absolutely positioned. Paired with a reflowable twin carrying the same words, so you can see which of the two a reader is actually honouring.
A fixed-layout EPUB 3 that asks for synthetic spreads in landscape and pins each page to a side with rendition:page-spread-left and rendition:page-spread-right. For testing two-up spread rendering and the side assignment readers get wrong first.
A fixed-layout EPUB 3 that requests a portrait orientation lock and suppresses spreads entirely. For testing whether a reader applies rendition:orientation, ignores it, or rotates the content anyway on a landscape device.
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