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Source: Roblox Creator Hub · CC BY 4.0 · View source · Code samples: MIT Imported 2026-10-03. Formatting adapted for this site.

GET /v1/games/{universeId}/thumbnails — openapi

Fetches game thumbnail URLs for a list of universes' thumbnail ids. Ids that do not correspond to a valid thumbnail will be filtered out.

Endpoint

Method: GET

Path: /v1/games/{universeId}/thumbnails

Servers:

Parameters

NameLocationRequiredDescription
universeIdpathtrue
thumbnailIdsquerytrue
sizequeryfalseThe thumbnail size, formatted widthxheight
formatqueryfalseThe thumbnail format
isCircularqueryfalseThe circle thumbnail output parameter, true or false
[
  {
    "in": "path",
    "name": "universeId",
    "required": true,
    "schema": {
      "type": "integer",
      "format": "int64"
    }
  },
  {
    "in": "query",
    "name": "thumbnailIds",
    "required": true,
    "style": "form",
    "explode": false,
    "schema": {
      "type": "array",
      "items": {
        "format": "int64",
        "type": "integer"
      }
    }
  },
  {
    "in": "query",
    "name": "size",
    "description": "The thumbnail size, formatted widthxheight",
    "schema": {
      "type": "string",
      "enum": [
        "768x432",
        "576x324",
        "480x270",
        "384x216",
        "256x144"
      ],
      "default": "768x432"
    }
  },
  {
    "in": "query",
    "name": "format",
    "description": "The thumbnail format",
    "schema": {
      "type": "string",
      "enum": [
        "Png",
        "Jpeg",
        "Webp"
      ],
      "default": "Png"
    }
  },
  {
    "in": "query",
    "name": "isCircular",
    "description": "The circle thumbnail output parameter, true or false",
    "schema": {
      "type": "boolean",
      "enum": [
        "true",
        "false"
      ],
      "default": "false"
    }
  }
]

Responses

StatusDescription
200OK
4001: There are too many requested Ids. 2: The requested image format is invalid. Please see documentation for valid thumbnail format parameter name and values. 3: The requested size is invalid. Please see documentation for valid thumbnail size parameter name and format. 4: The requested Ids are invalid, of an invalid type or missing. 10: Circular thumbnail requests are not allowed
4045: The requested universe does not exist.
{
  "200": {
    "description": "OK"
  },
  "400": {
    "description": "1: There are too many requested Ids.\r\n2: The requested image format is invalid. Please see documentation for valid thumbnail format parameter name and values.\r\n3: The requested size is invalid. Please see documentation for valid thumbnail size parameter name and format.\r\n4: The requested Ids are invalid, of an invalid type or missing.\r\n10: Circular thumbnail requests are not allowed"
  },
  "404": {
    "description": "5: The requested universe does not exist."
  }
}

Authentication

{
  "security": [
    {},
    {
      "roblox-legacy-cookie": []
    }
  ],
  "securitySchemes": {
    "roblox-api-key": {
      "type": "apiKey",
      "description": "A configurable key that allows granular access to Roblox resources. See https://create.roblox.com/docs/cloud/auth/api-keys for more information.",
      "name": "x-api-key",
      "in": "header"
    },
    "roblox-legacy-cookie": {
      "type": "apiKey",
      "description": "A browser cookie that represents the identity of a Roblox user. DO NOT SHARE THIS. Sharing this will allow someone to log in as you and to steal your Robux and items. We do not recommend using cookies to call endpoints. When possible, use API keys with the x-api-key header or OAuth 2.0 instead for authentication.",
      "in": "cookie",
      "name": ".ROBLOSECURITY"
    },
    "roblox-oauth2": {
      "type": "oauth2",
      "description": "Build or authorize apps to access Roblox resources. See https://create.roblox.com/docs/cloud/auth/oauth2-overview for more information.",
      "flows": {
        "authorizationCode": {
          "authorizationUrl": "https://apis.roblox.com/oauth/v1/authorize",
          "tokenUrl": "https://apis.roblox.com/oauth/v1/token",
          "refreshUrl": "https://apis.roblox.com/oauth/v1/token",
          "scopes": {}
        }
      }
    }
  }
}

Complete Operation Definition

{
  "tags": [
    "Thumbnails",
    "Universes"
  ],
  "summary": "Fetches game thumbnail URLs for a list of universes' thumbnail ids. Ids that do not correspond to a valid thumbnail will be filtered out.",
  "parameters": [
    {
      "in": "path",
      "name": "universeId",
      "required": true,
      "schema": {
        "type": "integer",
        "format": "int64"
      }
    },
    {
      "in": "query",
      "name": "thumbnailIds",
      "required": true,
      "style": "form",
      "explode": false,
      "schema": {
        "type": "array",
        "items": {
          "format": "int64",
          "type": "integer"
        }
      }
    },
    {
      "in": "query",
      "name": "size",
      "description": "The thumbnail size, formatted widthxheight",
      "schema": {
        "type": "string",
        "enum": [
          "768x432",
          "576x324",
          "480x270",
          "384x216",
          "256x144"
        ],
        "default": "768x432"
      }
    },
    {
      "in": "query",
      "name": "format",
      "description": "The thumbnail format",
      "schema": {
        "type": "string",
        "enum": [
          "Png",
          "Jpeg",
          "Webp"
        ],
        "default": "Png"
      }
    },
    {
      "in": "query",
      "name": "isCircular",
      "description": "The circle thumbnail output parameter, true or false",
      "schema": {
        "type": "boolean",
        "enum": [
          "true",
          "false"
        ],
        "default": "false"
      }
    }
  ],
  "responses": {
    "200": {
      "description": "OK"
    },
    "400": {
      "description": "1: There are too many requested Ids.\r\n2: The requested image format is invalid. Please see documentation for valid thumbnail format parameter name and values.\r\n3: The requested size is invalid. Please see documentation for valid thumbnail size parameter name and format.\r\n4: The requested Ids are invalid, of an invalid type or missing.\r\n10: Circular thumbnail requests are not allowed"
    },
    "404": {
      "description": "5: The requested universe does not exist."
    }
  },
  "servers": [
    {
      "url": "https://thumbnails.roblox.com"
    }
  ],
  "x-roblox-stability": "STABLE",
  "x-roblox-engine-usability": {
    "apiKeyWithHttpService": false
  },
  "security": [
    {},
    {
      "roblox-legacy-cookie": []
    }
  ],
  "externalDocs": {
    "url": "https://create.roblox.com/docs/cloud/reference/features/thumbnails#thumbnails_get_v1_games__universeId__thumbnails"
  }
}