Why would anyone need a 1 MB configuration file?

To find out what a tool does when configuration grows: generated Kubernetes manifests and translation files reach that size in practice.

Configuration sample files

YAML, TOML and INI files for testing configuration loaders, linters and converters.

Formats in this category

Format	What it is	Sizes
YAML sample files.yaml application/yaml	Human-friendly data serialisation that relies on indentation. The format of most infrastructure configuration.	1 KB to 1 MB
TOML sample files.toml application/toml	A configuration format with explicit types and sections, used by Rust, Python and many tools.	1 KB to 1 MB
INI sample files.ini text/plain	Simple key = value settings grouped into sections. Old, informal and still everywhere.	1 KB to 1 MB
JSON sample files.json application/json	The standard data format of web APIs: objects, arrays, strings, numbers, booleans and null.	1 KB to 10 MB
XML sample files.xml application/xml	Structured, self-describing documents built from nested elements and attributes.	1 KB to 10 MB

About these files

Configuration formats look simple and hide many edge cases: implicit typing in YAML, table arrays in TOML and the complete absence of a standard for INI.

These samples use the main features of each format with ordinary, predictable values, so they make a sound baseline before you test the awkward cases.

Ready-made samples

Hand-designed files with realistic content or a specific edge case.

Curated sample files: Configuration
File	Format	Size	Contents	Download
Sample Docker Compose YAMLsample-docker-compose.yaml	YAML	744 B744 bytes	Features: Anchors and aliases, sequences, nested mappings, quoted strings, comments	Download YAML

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What to test

CI/CD pipelines
Fixtures for build, test and deployment pipelines, with checksums for verification.
Software development
General-purpose fixtures for building, debugging and demonstrating software that reads or writes files.
File parser testing
Well-formed files and deliberate edge cases for testing code that reads CSV, JSON, XML, PDF and more.

Related categories

Configuration files: questions

Why would anyone need a 1 MB configuration file?: To find out what a tool does when configuration grows: generated Kubernetes manifests and translation files reach that size in practice.