Rossum Alternative: Invoice OCR API

What Rossum Is

Rossum is an AI platform for processing transactional documents such as invoices, with review and workflow tooling. 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 invoice. There is no SDK to embed, billing is 3 credits per successful request, credits never expire, and failed requests are not billed. See the Invoice API docs or try the free scanner.

Where This Fits

• Choose Rossum when: you need an enterprise accounts-payable platform with human review queues.
• Choose StructOCR when: you are a developer who needs invoice JSON from an API call and will build your own review step.
• 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("invoice.jpg", "rb") as image_file:
    image = base64.b64encode(image_file.read()).decode("ascii")

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

Response Shape

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

{
  "success": true,
  "data": {
    "invoice_number": "…",
    "date": "…",
    "due_date": "…",
    "currency": "…"
  }
}