Hong Kong Driver License OCR API with Node.js

Extract licence number, names, dates, and vehicle class from the Hong Kong SAR Hong Kong driving licence with the StructOCR Node.js SDK.

Reading the Hong Kong driving licence

The Transport Department licence is bilingual in Chinese and English and is tied to the holder’s HKID number. Typing these fields by hand slows down rental, onboarding, and fleet workflows and introduces formatting errors.

Structured Fields from One API Call

The Driver License OCR API returns the licence number, holder name, dates, issuing authority, address, and vehicle class when they are printed and legible; missing fields are null. Try a sample with the free driver license scanner. For coverage, pricing, and the full field list, see the driver license OCR API overview.

Common Integration Scenarios

  • Vehicle rental: Pre-fill Hong Kong licence details before handover and keep the agent’s confirmation step.
  • Driver onboarding: Move licence fields into a review queue without retyping the card.
  • Fleet records: Track licence classes and expiry dates for internal compliance reminders.
Need more testing? Create a free account to get 200 free credits (equals 100 Driver License scans).

Hong Kong Driver License OCR API with Node.js

The official Node.js SDK reads a local file and calls /v1/driver-license from your backend.

Prerequisite: `npm install structocr`; set the server-side `STRUCTOCR_API_KEY` environment variable.

Prefer another stack? Open the Python SDK + FastAPI integration.

const StructOCR = require("structocr");

const client = new StructOCR(process.env.STRUCTOCR_API_KEY);

async function main() {
  const result = await client.scanDriverLicense("driver-license.jpg");
  if (result.success) {
    const data = result.data;
    console.log(data.document_number);
    console.log(data.given_names, data.surname);
  } else {
    console.error(result.error);
  }
}

main().catch(console.error);

Technical Specs

  • •Endpoint: POST /v1/driver-license
  • •Input: Base64-encoded JPG, PNG, WebP, or PDF in JSON (Max 4.5MB)
  • •Authentication: Server-side x-api-key header handled by the SDK
  • •Cost: 2 credits per successful scan; failed requests are not billed
  • •Output: Structured JSON

Key Features

  • •Local layout: Handles the Hong Kong driving licence layout and its printed field labels.
  • •Licence fields: Returns licence number, vehicle class, and validity dates when visible.
  • •Normalized dates: Dates are returned as YYYY-MM-DD regardless of the printed format.
  • •Server-side key: The SDK keeps your API key on the backend.

JSON Response Example

Fictional values showing the normalized shape; fields not present on the card are null.

{
  "success": true,
  "data": {
    "type": "drivers_license",
    "country_code": "HKG",
    "region": "Hong Kong",
    "personal_number": null,
    "surname": "CHAN",
    "given_names": "TAI MAN",
    "sex": null,
    "date_of_birth": "1990-04-12",
    "place_of_birth": null,
    "date_of_issue": "2023-05-02",
    "date_of_expiry": "2033-05-01",
    "date_of_first_issue": null,
    "issuing_authority": "TRANSPORT DEPARTMENT",
    "address": null,
    "vehicle_class": "1 2",
    "extra_details": {},
    "document_number": "A000000(0)"
  }
}

Frequently Asked Questions

Which fields does the API return for a Hong Kong licence?

Typically country_code, region, document_number, personal_number, names, sex, birth details, issue and expiry dates, issuing_authority, address, and vehicle_class, when printed and legible.

Does OCR verify that the licence is valid?

No. It extracts printed data. Validity and authenticity checks need the issuing authority’s records or your own review process.

Is there a version for the other SDK language?

Yes. A paired Python version of this tutorial covers the same document.

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