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Preview of Identicon Avatar: Alan Turing
png
801 B
Actual file preview for Identicon Avatar: Alan Turing

Identicon Avatar: Alan Turing

A 256×256 identicon-style avatar generated deterministically from the seed “alan-turing”: a symmetric 5×5 block pattern like the default avatars on many sites. For testing avatar rendering, placeholder generation, and image pipelines.

File
PNG · Avatar
Use case
Thumbnail generationImage pipeline QA· Conversion set
Preview of Identicon Avatar: Grace Hopper
png
822 B
Actual file preview for Identicon Avatar: Grace Hopper

Identicon Avatar: Grace Hopper

A 256×256 identicon-style avatar generated deterministically from the seed “grace-hopper”: a symmetric 5×5 block pattern like the default avatars on many sites. For testing avatar rendering, placeholder generation, and image pipelines.

File
PNG · Avatar
Use case
Thumbnail generationImage pipeline QA· Conversion set
Preview of Identicon Avatar: Katherine Johnson
png
810 B
Actual file preview for Identicon Avatar: Katherine Johnson

Identicon Avatar: Katherine Johnson

A 256×256 identicon-style avatar generated deterministically from the seed “katherine-johnson”: a symmetric 5×5 block pattern like the default avatars on many sites. For testing avatar rendering, placeholder generation, and image pipelines.

File
PNG · Avatar
Use case
Thumbnail generationImage pipeline QA· Conversion set
Preview of IEEE-754 float32 Boundary Values (.npy)
npy
176 B
Actual file preview for IEEE-754 float32 Boundary Values (.npy)

IEEE-754 float32 Boundary Values (.npy)

The single-precision counterpart of the float64 boundary array, including the 2^24 integer limit where consecutive whole numbers stop being representable. Widening float32 to float64 and back must preserve every one of these bit patterns.

File
NPY · Numeric Edges
Use case
Scientific dataError handling· Paired fixture
Preview of IEEE-754 float32 Boundary Values: Bit-Level CSV (.csv)
csv
815 B
Actual file preview for IEEE-754 float32 Boundary Values: Bit-Level CSV (.csv)

IEEE-754 float32 Boundary Values: Bit-Level CSV (.csv)

The float32 boundary values split into sign, 8-bit exponent and 23-bit mantissa alongside their decimal forms. Use it to check a single-precision encoder field by field rather than guessing which end of the number went wrong.

File
CSV · Numeric Edges · 12 rows
Use case
Scientific dataEditor testing+1· Paired fixture
Preview of IEEE-754 float64 Boundary Values (.npy)
npy
256 B
Actual file preview for IEEE-754 float64 Boundary Values (.npy)

IEEE-754 float64 Boundary Values (.npy)

The sixteen structurally distinct float64 values a numeric pipeline has to survive, in binary form: both zeros, both subnormal limits, the smallest normal, epsilon, the largest finite value, both infinities, a quiet NaN and the 2^53 integer boundary. Round-tripping this array is the minimum bar for any float64 codec.

File
NPY · Numeric Edges
Use case
Scientific dataError handling· Paired fixture
Preview of IEEE-754 float64 Boundary Values: Bit-Level CSV (.csv)
csv
1.5 KB
Actual file preview for IEEE-754 float64 Boundary Values: Bit-Level CSV (.csv)

IEEE-754 float64 Boundary Values: Bit-Level CSV (.csv)

Every value in the float64 boundary array decomposed into its shortest decimal representation, its C99 hexadecimal float form, and its raw sign, exponent and mantissa fields. It turns 'the numbers came back wrong' into a diff you can point at a single bit.

File
CSV · Numeric Edges · 16 rows
Use case
Scientific dataEditor testing+1· Paired fixture
Preview of IEEE-754 float64 Boundary Values: JSON With No NaN Literal (.json)
json
3.1 KB
Actual file preview for IEEE-754 float64 Boundary Values: JSON With No NaN Literal (.json)

IEEE-754 float64 Boundary Values: JSON With No NaN Literal (.json)

The same boundary values as strict RFC 8259 JSON, where non-finite numbers are null in the numeric field and text in the string field because the standard has no NaN or Infinity literal. It is the fixture for the encoder that emits bare NaN and produces JSON nothing else will parse.

File
JSON · Numeric Edges · 16 records
Use case
Scientific dataEditor testing+1· Conversion set
Preview of IGES: Minimal Line Entity
iges
648 B
Actual file preview for IGES: Minimal Line Entity

IGES: Minimal Line Entity

A minimal, well-formed IGES 5.3 file with a single LINE entity and correct Start/Global/Directory/Parameter/Terminate sections. For testing IGES parsers and CAD conversion.

File
IGES · Cad
Preview of Image-Only 'Scanned' PDF (OCR twin)
pdf
2.6 MB
Actual file preview for Image-Only 'Scanned' PDF (OCR twin)

Image-Only 'Scanned' PDF (OCR twin)

An image-only PDF containing a rasterised 'scan' of the simple document, with no text layer. Paired with the text version so you can score OCR output against a known ground truth.

File
PDF · PDF · 1 page
Use case
PDF editor testingOCR testing· Paired fixture
Preview of in-toto Layout (Supply-Chain Policy)
json
2.4 KB
Actual file preview for in-toto Layout (Supply-Chain Policy)

in-toto Layout (Supply-Chain Policy)

The policy half of in-toto: a layout declaring which steps must run, which keys may sign them, and the MATCH/CREATE/DISALLOW artifact rules that bind each step's products to the next step's materials. Signatures, key ids and certificates here are SAMPLE placeholders: the base64 decodes to the words 'SAMPLE SIGNATURE', so verification must fail. Nothing here is cryptographically valid and no key material is real.

File
JSON · Provenance
Use case
JSON parsingConfig testing+1· Conversion set
Preview of in-toto Link Metadata
json
1 KB
Actual file preview for in-toto Link Metadata

in-toto Link Metadata

An in-toto link file recording one build step: the materials that went in, the products that came out and their sha256 digests, wrapped in the signed/signatures envelope in-toto uses. Signatures, key ids and certificates here are SAMPLE placeholders: the base64 decodes to the words 'SAMPLE SIGNATURE', so verification must fail. Nothing here is cryptographically valid and no key material is real.

File
JSON · Provenance
Use case
JSON parsingSchema validation+1· Conversion set
Preview of in-toto Statement With SLSA Provenance v0.2
json
1.8 KB
Actual file preview for in-toto Statement With SLSA Provenance v0.2

in-toto Statement With SLSA Provenance v0.2

The predecessor predicate: SLSA v0.2 uses invocation/materials/buildConfig where v1 uses buildDefinition/runDetails, so this file is the migration test for any verifier that must accept both. Every package, version, hash and licence is fictional: the tree describes nothing real.

File
JSON · Provenance
Use case
JSON parsingConversion testing+1· Conversion set
Preview of in-toto Statement With SLSA Provenance v1
json
2.3 KB
Actual file preview for in-toto Statement With SLSA Provenance v1

in-toto Statement With SLSA Provenance v1

An unsigned in-toto Statement carrying a SLSA v1 provenance predicate for a fictional release: build definition, external parameters, resolved dependencies with digests, and run details naming an invented builder. Every package, version, hash and licence is fictional: the tree describes nothing real.

File
JSON · Provenance
Use case
JSON parsingSchema validation+1· Conversion set
Preview of Incident Postmortem: Checkout Latency (DOCX)
docx
39.3 KB
Actual file preview for Incident Postmortem: Checkout Latency (DOCX)

Incident Postmortem: Checkout Latency (DOCX)

A blameless operational review with impact, timeline, causal analysis, and owned actions. This editable Word edition carries the complete shared family model with styled sections and print-safe tables.

File
DOCX · Operations
Use case
TemplatesConversion testing· Conversion set
Preview of Incident Postmortem: Checkout Latency (Markdown)
md
3.1 KB
Actual file preview for Incident Postmortem: Checkout Latency (Markdown)

Incident Postmortem: Checkout Latency (Markdown)

A blameless operational review with impact, timeline, causal analysis, and owned actions. This UTF-8 Markdown twin preserves the same headings, lists, checkboxes, and GFM tables in portable plain text.

File
MD · Operations
Use case
TemplatesConversion testing+1· Conversion set
Preview of Incident Postmortem: Checkout Latency (PDF)
pdf
6.2 KB
Actual file preview for Incident Postmortem: Checkout Latency (PDF)

Incident Postmortem: Checkout Latency (PDF)

A blameless operational review with impact, timeline, causal analysis, and owned actions. This print-ready PDF twin is designed for page-rendering, extraction, and cross-format comparison tests.

File
PDF · Operations
Use case
TemplatesConversion testing· Conversion set
Preview of Incident Runbook: Checkout Latency SLO Burn (md)
md
2 KB
Actual file preview for Incident Runbook: Checkout Latency SLO Burn (md)

Incident Runbook: Checkout Latency SLO Burn (md)

The runbook the alerting rules link to, written as a real one would be: confirm, localise, mitigate, close out, with a symptom table pointing at the trace and profile fixtures in this category. A realistic document for testing runbook linting, link checking and documentation pipelines.

File
MD · Alerts
Preview of Indexed Instance Mask: 4 Objects (512px)
png
3 KB
Actual file preview for Indexed Instance Mask: 4 Objects (512px)

Indexed Instance Mask: 4 Objects (512px)

An indexed (palette) instance mask for the fruit still life: background = 0 and each fruit painted with its own instance id. Per-object class and normalised bounding box are listed in the specs.

File
PNG · Ai Segmentation · 512 × 512 px
Use case
Image segmentationObject detection· Conversion set
Preview of INI Configuration
ini
158 B
Actual file preview for INI Configuration

INI Configuration

A classic INI configuration file with sections and key/value pairs, for testing INI parsers.

File
INI · Config · UTF-8
Preview of Inpaint Clean Reference (512px)
png
54.4 KB
Actual file preview for Inpaint Clean Reference (512px)

Inpaint Clean Reference (512px)

Clean fruit still-life reference for the inpaint cut suite. Each cut variant and mask in this group points back to this file.

File
PNG · Inpaint Cuts · 512 × 512 px
Use case
InpaintingPhoto restoration· Conversion set