Containers & Docker
OCI Image Spec Reference
Search OCI Image Specification concepts — image manifests, layer digests, image config, multi-platform image indexes, and standard annotations.
No data is transmitted — everything runs locallyTool
About this tool
OCI Image Spec Reference
The OCI Image Spec Reference covers image manifests, layer digests, image config fields, multi-platform image indexes, and standard org.opencontainers.image.* annotation labels.
• Look up OCI image manifest structure before building a custom registry client
• Understand layer digest format before implementing image caching
• Reference multi-platform image index format before publishing a multi-arch image
• Find standard OCI annotation keys before labeling CI-built images
Next step
Container Base Image Comparison — Compare container base images by size, compatibility, and attack surface for your runtime.
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FAQ
What does this tool tell you?
The OCI Image Spec Reference covers image manifests, layer digests, image config fields, multi-platform image indexes, and standard org.opencontainers.image.* annotation labels.
What affects the result most?
OCI Image Spec: mediaType, config, layers — standardized format across registries. Image manifest: JSON listing layers by digest and config — what docker pull fetches first. Image config: Cmd, Entrypoint, Env, ExposedPorts, WorkingDir — runtime configuration.
How should I use the result?
Use this tool to orient quickly to the concepts, field names, or values you are about to look up in a full specification or vendor documentation. It summarizes the common cases; the authoritative source remains whichever standard or vendor doc defines the values themselves.
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