{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.unsplash.com/schemas/photo",
  "title": "Unsplash Photo",
  "description": "A photo object from the Unsplash API, containing image URLs at multiple sizes, photographer info, metadata, and statistics.",
  "type": "object",
  "required": ["id", "urls", "user"],
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique photo identifier",
      "example": "Dwu85P9SOIk"
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the photo was uploaded"
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the photo was last updated"
    },
    "promoted_at": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "When the photo was promoted to the editorial feed"
    },
    "width": {
      "type": "integer",
      "description": "Original photo width in pixels",
      "example": 5616
    },
    "height": {
      "type": "integer",
      "description": "Original photo height in pixels",
      "example": 3744
    },
    "color": {
      "type": "string",
      "description": "Dominant color hex code for placeholder display",
      "pattern": "^#[0-9A-Fa-f]{6}$",
      "example": "#6E633A"
    },
    "blur_hash": {
      "type": "string",
      "description": "BlurHash string for generating compact placeholder previews",
      "example": "L~I64nofRjof%MQZWBS$Mxnhx]t6"
    },
    "description": {
      "type": ["string", "null"],
      "description": "Photographer-provided description"
    },
    "alt_description": {
      "type": ["string", "null"],
      "description": "Auto-generated alt text for accessibility"
    },
    "likes": {
      "type": "integer",
      "description": "Number of likes"
    },
    "downloads": {
      "type": "integer",
      "description": "Total download count"
    },
    "views": {
      "type": "integer",
      "description": "Total view count"
    },
    "liked_by_user": {
      "type": "boolean",
      "description": "Whether the authenticated user liked this photo"
    },
    "urls": {
      "type": "object",
      "required": ["raw", "full", "regular", "small", "thumb"],
      "description": "Image URLs at different sizes for responsive delivery",
      "properties": {
        "raw": {
          "type": "string",
          "format": "uri",
          "description": "Original image URL — add custom transformations via imgix parameters"
        },
        "full": {
          "type": "string",
          "format": "uri",
          "description": "Full quality image (largest practical size)"
        },
        "regular": {
          "type": "string",
          "format": "uri",
          "description": "1080px wide image for most use cases"
        },
        "small": {
          "type": "string",
          "format": "uri",
          "description": "400px wide image for thumbnails and previews"
        },
        "thumb": {
          "type": "string",
          "format": "uri",
          "description": "200px wide thumbnail"
        },
        "small_s3": {
          "type": "string",
          "format": "uri",
          "description": "Small image hosted on S3 (backup)"
        }
      }
    },
    "links": {
      "type": "object",
      "description": "Navigation and attribution links",
      "properties": {
        "self": {
          "type": "string",
          "format": "uri",
          "description": "API URL for this photo"
        },
        "html": {
          "type": "string",
          "format": "uri",
          "description": "Unsplash.com page for this photo (required for attribution)"
        },
        "download": {
          "type": "string",
          "format": "uri",
          "description": "Download page URL"
        },
        "download_location": {
          "type": "string",
          "format": "uri",
          "description": "API endpoint to call when user downloads (required by Unsplash guidelines)"
        }
      }
    },
    "user": {
      "$ref": "#/$defs/UserSummary",
      "description": "Photographer profile summary"
    },
    "location": {
      "type": "object",
      "description": "Where the photo was taken",
      "properties": {
        "name": {"type": ["string", "null"]},
        "city": {"type": ["string", "null"]},
        "country": {"type": ["string", "null"]},
        "position": {
          "type": "object",
          "properties": {
            "latitude": {"type": ["number", "null"]},
            "longitude": {"type": ["number", "null"]}
          }
        }
      }
    },
    "exif": {
      "type": "object",
      "description": "Camera EXIF metadata",
      "properties": {
        "make": {"type": ["string", "null"]},
        "model": {"type": ["string", "null"]},
        "exposure_time": {"type": ["string", "null"]},
        "aperture": {"type": ["string", "null"]},
        "focal_length": {"type": ["string", "null"]},
        "iso": {"type": ["integer", "null"]}
      }
    },
    "tags": {
      "type": "array",
      "description": "Classification tags",
      "items": {
        "type": "object",
        "properties": {
          "type": {"type": "string"},
          "title": {"type": "string"}
        }
      }
    }
  },
  "$defs": {
    "UserSummary": {
      "type": "object",
      "properties": {
        "id": {"type": "string"},
        "username": {"type": "string"},
        "name": {"type": "string"},
        "portfolio_url": {"type": ["string", "null"], "format": "uri"},
        "bio": {"type": ["string", "null"]},
        "location": {"type": ["string", "null"]},
        "total_likes": {"type": "integer"},
        "total_photos": {"type": "integer"},
        "total_collections": {"type": "integer"},
        "profile_image": {
          "type": "object",
          "properties": {
            "small": {"type": "string", "format": "uri"},
            "medium": {"type": "string", "format": "uri"},
            "large": {"type": "string", "format": "uri"}
          }
        },
        "links": {
          "type": "object",
          "properties": {
            "self": {"type": "string", "format": "uri"},
            "html": {"type": "string", "format": "uri"},
            "photos": {"type": "string", "format": "uri"},
            "likes": {"type": "string", "format": "uri"}
          }
        }
      }
    }
  }
}