Tesseract OCR Alternative: VIN OCR API

What Tesseract OCR Is

Tesseract is a widely used open-source OCR engine for general printed text. Choosing between it and an API comes down to where processing runs, how you pay, and which documents you need.

Where StructOCR Differs

StructOCR is a server-side REST API: you send an image and receive structured JSON for vin. There is no SDK to embed, billing is 1 credit per successful request, credits never expire, and failed requests are not billed. See the VIN API docs or try the free scanner.

Where This Fits

• Choose Tesseract OCR when: you have clean, flat printed text and want to self-host without per-request cost.
• Choose StructOCR when: you read VINs from glare-prone windshields, embossed plates, and door labels and need VIN-aware validation.
• Use both when: You capture on a device with one tool and need server-side extraction or a fallback for uploaded images with the other.

Try the API in a Few Lines

A complete request takes one HTTP call with your API key.

Prerequisite: Python 3.9+, `pip install requests`, and a STRUCTOCR_API_KEY

import base64
import os
import requests

with open("vin.jpg", "rb") as image_file:
    image = base64.b64encode(image_file.read()).decode("ascii")

response = requests.post(
    "https://api.structocr.com/v1/vin",
    headers={"x-api-key": os.environ["STRUCTOCR_API_KEY"]},
    json={"img": image},
    timeout=30,
)
response.raise_for_status()
data = response.json()["data"]
print("vin:", data.get("vin"))
print("confidence:", data.get("confidence"))
print("carrier_type:", data.get("carrier_type"))

Response Shape

Illustrative fields returned by the StructOCR API for this document type.

{
  "success": true,
  "data": {
    "vin": "…",
    "confidence": "…",
    "carrier_type": "…"
  }
}