Microsoft Word Thumbnails API

openapi: 3.2.0
info:
  title: Microsoft Graph Word Thumbnails API
  description: REST API for interacting with Word documents in Microsoft 365 and OneDrive via the Microsoft Graph unified endpoint. Provides operations for file management, content access, sharing, permissions, versioning, and document metadata for DriveItem resources.
  version: 1.0.0
  contact:
    name: Microsoft Graph Support
    url: https://developer.microsoft.com/graph/support
  license:
    name: Microsoft API License
    url: https://www.microsoft.com/en-us/legal/terms-of-use
  x-generated-from: documentation
  x-last-validated: '2026-04-18'
servers:
- url: https://graph.microsoft.com/v1.0
  description: Microsoft Graph v1.0 production endpoint
security:
- oauth2: []
tags:
- name: Thumbnails
  description: Operations for retrieving file thumbnails
paths:
  /me/drive/items/{item-id}/thumbnails:
    get:
      operationId: listThumbnails
      summary: Microsoft Word List Thumbnails
      description: Retrieve a collection of ThumbnailSet resources for a DriveItem resource.
      tags:
      - Thumbnails
      parameters:
      - $ref: '#/components/parameters/itemId'
      responses:
        '200':
          description: Successfully retrieved thumbnails.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ThumbnailSetCollection'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    itemId:
      name: item-id
      in: path
      required: true
      description: The unique identifier of the drive item.
      schema:
        type: string
      example: 01NKDM7HMOJTVYMDOSXFDK2QJDXCDI3WUK
  responses:
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Authentication required or token expired.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      description: Error response from the API.
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              description: Error code.
              example: itemNotFound
            message:
              type: string
              description: Human-readable error message.
              example: The resource could not be found.
            innerError:
              type: object
              properties:
                request-id:
                  type: string
                  description: Request correlation ID.
                  example: b0c6a5b0-4c0a-4c8e-9b0a-1234567890ab
                date:
                  type: string
                  format: date-time
                  description: Timestamp of the error.
                  example: '2025-03-21T20:01:37Z'
    Thumbnail:
      type: object
      description: A thumbnail image for a drive item.
      properties:
        width:
          type: integer
          description: Width of the thumbnail in pixels.
          example: 176
        height:
          type: integer
          description: Height of the thumbnail in pixels.
          example: 248
        url:
          type: string
          format: uri
          description: URL to fetch the thumbnail content.
          example: https://sn3302files.onedrive.live.com/thumbnails/abc
    ThumbnailSetCollection:
      type: object
      description: Collection of thumbnail sets.
      properties:
        value:
          type: array
          items:
            $ref: '#/components/schemas/ThumbnailSet'
    ThumbnailSet:
      type: object
      description: Set of thumbnails for a drive item.
      properties:
        id:
          type: string
          description: The ID within the item.
          example: '0'
        small:
          $ref: '#/components/schemas/Thumbnail'
        medium:
          $ref: '#/components/schemas/Thumbnail'
        large:
          $ref: '#/components/schemas/Thumbnail'
  securitySchemes:
    oauth2:
      type: oauth2
      description: OAuth 2.0 authorization code flow with Microsoft Identity Platform.
      flows:
        authorizationCode:
          authorizationUrl: https://login.microsoftonline.com/common/oauth2/v2.0/authorize
          tokenUrl: https://login.microsoftonline.com/common/oauth2/v2.0/token
          scopes:
            Files.Read: Read user files
            Files.ReadWrite: Read and write user files
            Files.Read.All: Read all files the user can access
            Files.ReadWrite.All: Read and write all files the user can access