---
title: "Check image blob/layer"
method: HEAD
path: "/v2/{name}/blobs/{digest}"
---

# Check image blob/layer

`HEAD /v2/{name}/blobs/{digest}`

Check an image's blob/layer given a digest

## Path parameters

- `name` string, required
- `digest` string, required

## Response `200`

OK

- ApiImageManifest
  - `annotations` object — Annotations contains arbitrary metadata for the image manifest.
  - `artifactType` string — ArtifactType specifies the IANA media type of artifact when the manifest is used for an artifact.
  - `config` V1Descriptor
    - `annotations` object — Annotations contains arbitrary metadata relating to the targeted content.
    - `artifactType` string — ArtifactType is the IANA media type of this artifact.
    - `data` integer[] — Data is an embedding of the targeted content. This is encoded as a base64 string when marshalled to JSON (automatically, by encoding/json). If present, Data can be used directly to avoid fetching the targeted content.
    - `digest` string — Digest is the digest of the targeted content.
    - `mediaType` string — MediaType is the media type of the object this schema refers to.
    - `platform` V1Platform
      - `architecture` string — Architecture field specifies the CPU architecture, for example `amd64` or `ppc64le`.
      - `os` string — OS specifies the operating system, for example `linux` or `windows`.
      - `os.features` string[] — OSFeatures is an optional field specifying an array of strings, each listing a required OS feature (for example on Windows `win32k`).
      - `os.version` string — OSVersion is an optional field specifying the operating system version, for example on Windows `10.0.14393.1066`.
      - `variant` string — Variant is an optional field specifying a variant of the CPU, for example `v7` to specify ARMv7 when architecture is `arm`.
    - `size` integer — Size specifies the size in bytes of the blob.
    - `urls` string[] — URLs specifies a list of URLs from which this object MAY be downloaded
  - `layers` V1Descriptor[] — Layers is an indexed list of layers referenced by the manifest.
    - `annotations` object — Annotations contains arbitrary metadata relating to the targeted content.
    - `artifactType` string — ArtifactType is the IANA media type of this artifact.
    - `data` integer[] — Data is an embedding of the targeted content. This is encoded as a base64 string when marshalled to JSON (automatically, by encoding/json). If present, Data can be used directly to avoid fetching the targeted content.
    - `digest` string — Digest is the digest of the targeted content.
    - `mediaType` string — MediaType is the media type of the object this schema refers to.
    - `platform` V1Platform
      - `architecture` string — Architecture field specifies the CPU architecture, for example `amd64` or `ppc64le`.
      - `os` string — OS specifies the operating system, for example `linux` or `windows`.
      - `os.features` string[] — OSFeatures is an optional field specifying an array of strings, each listing a required OS feature (for example on Windows `win32k`).
      - `os.version` string — OSVersion is an optional field specifying the operating system version, for example on Windows `10.0.14393.1066`.
      - `variant` string — Variant is an optional field specifying a variant of the CPU, for example `v7` to specify ARMv7 when architecture is `arm`.
    - `size` integer — Size specifies the size in bytes of the blob.
    - `urls` string[] — URLs specifies a list of URLs from which this object MAY be downloaded
  - `mediaType` string — MediaType specifies the type of this document data structure e.g. `application/vnd.oci.image.manifest.v1+json`
  - `schemaVersion` integer — SchemaVersion is the image manifest schema that this image follows
  - `subject` V1Descriptor
    - `annotations` object — Annotations contains arbitrary metadata relating to the targeted content.
    - `artifactType` string — ArtifactType is the IANA media type of this artifact.
    - `data` integer[] — Data is an embedding of the targeted content. This is encoded as a base64 string when marshalled to JSON (automatically, by encoding/json). If present, Data can be used directly to avoid fetching the targeted content.
    - `digest` string — Digest is the digest of the targeted content.
    - `mediaType` string — MediaType is the media type of the object this schema refers to.
    - `platform` V1Platform
      - `architecture` string — Architecture field specifies the CPU architecture, for example `amd64` or `ppc64le`.
      - `os` string — OS specifies the operating system, for example `linux` or `windows`.
      - `os.features` string[] — OSFeatures is an optional field specifying an array of strings, each listing a required OS feature (for example on Windows `win32k`).
      - `os.version` string — OSVersion is an optional field specifying the operating system version, for example on Windows `10.0.14393.1066`.
      - `variant` string — Variant is an optional field specifying a variant of the CPU, for example `v7` to specify ARMv7 when architecture is `arm`.
    - `size` integer — Size specifies the size in bytes of the blob.
    - `urls` string[] — URLs specifies a list of URLs from which this object MAY be downloaded

---

[API](https://skmtc.net/project-zot/apis/open-container-initiative-distribution-specification.md) · [All operations](https://skmtc.net/project-zot/apis/open-container-initiative-distribution-specification/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/project-zot/open-container-initiative-distribution-specification/revisions/62d5df709bf8/schema)