On-the-Edge
Web OCR SDK

Web-native SDK for ID scanning, data extraction, and validation in a single browser session.
Full-Fledged Functionality in Any Browser
Bring complete WebAssembly-powered ID scanning capabilities to the browser without requiring users to install anything.
Native-Level Speed and Accuracy
Get native-grade recognition speed and accuracy directly on the web.
Strict Client-Side Data Locality
Keep images and extracted data on the user’s device – nothing is sent to external servers.
Cross-Environment Compatibility
Deploy the same OCR capabilities across desktop and mobile browsers, PWAs, and messenger mini apps.
Send request Test OCR Studio demo app

Web OCR SDK – Built for Fast Web Integration

Web-Native OCR: scan anything instantly without leaving a webpage
  • ID scanning engine — delivered as high-performance WASM modules with built-in configuration
  • Server-side authorization SDK — unlocks and manages secure scanning sessions
  • Clear, production-ready documentation – no guesswork
  • Sample application — launch SDK in minutes
  • Extensive customer support — our experts guide integration into any setup

Web OCR SDK Capabilities

ID document scanning
ID document scanning
Extracts data from passports, national IDs, driver’s licenses, residence permits, and other documents of 4,000 templates
Learn more
Barcode & QR scanning
Barcode & QR scanning
Reads all major 1D and 2D barcodes: QR, PDF417, DataMatrix, Aztec, EAN/UPC, etc.
Learn more
Bank card scanning
Bank card scanning
Captures card number, expiry date, cardholder name, and security elements from a webcam or mobile camera
Learn more
Selfie ID verification
One-shot KYC
Matches the user’s face with the photo on their ID — runs on-the-edge with near-native performance
Learn more

Benefits of Browser OCR by OCR Studio

  • The technology is compatible with any modern browser – Google Chrome, Safari, Microsoft Edge, Firefox, and more
  • No installation required: rapid data extraction without lengthy downloads or additional services
  • Supports extraction from any format: images, video streams, or screenshots
  • The solution elevates your website's capabilities, making it more functional, accessible, and intuitive for end users
// JavaScript
importScripts("ocrstudiosdk_wasm.js")
const OCRSTUDIOSDK = await OCRStudioSDK(module)
instance = new OCRSTUDIOSDK.OCRStudioSDKInstance(
  "{ \"enable_lazy_initialization\": false, \"enable_delayed_initialization\": true, \"initialization_num_threads\": 1}"
)
const spawnedSession = instance.CreateSession(
  <SIGNATURE>, "{\"session_type\": \"document_recognition\", \"target_group_type\": \"default\", \"target_masks\": \"are.id.*\"}")
// <input type="file" id="file-selector"> must exist in HTML
fileSelector = document.querySelector("#file-selector")

fileSelector.addEventListener('change', async (event) => {
  const file = event.target.files[0];
  const { buffer, width, height } = await getImageBuffer(file);
  const rawData = new Uint8Array(buffer);
  let fileBufPtr = 0;
  const cap = Math.max(rawData.byteLength * 1.5, 8 * 1024 * 1024);
  fileBufPtr = OCRSTUDIOSDK._malloc(cap);
  OCRSTUDIOSDK.HEAPU8.set(rawData, fileBufPtr);
  const channels = rawData.byteLength / (height * width);
  const image = OCRSTUDIOSDK.CreateFromRawBuffer(fileBufPtr, rawData.byteLength, width, height, channels >= 3 ? rawData.byteLength / height : width, channels);
  spawnedSession.ProcessImage(image);
  const result = spawnedSession.CurrentResult();
});
For more information, please visit Developer section

Web OCR SDK Across Industries

ID document scanning
Online Services
Scan IDs and extract customer data directly within web onboarding flows. Users can complete identity checks from their browser in a single session without installing a dedicated app.
ID document scanning
Age Restricted Services
Add document-based age and identity checks to online services, marketplaces, and messenger mini apps while keeping document images directly at the point of presentation.
ID document scanning
Government & Public Services
Extract data from IDs, residence permits, and other documents directly in browser-based public service portals to streamline applications, registrations, and citizen service workflows without sending sensitive data to external infrastructure.
ID document scanning
Banking & Fintech
Capture IDs, bank cards, and other customer data inside digital banking and financial workflows — from account opening to KYC.
ID document scanning
Travel & Hospitality
Scan passports and identity documents during online check-in, booking, or guest registration to reduce manual data entry.
ID document scanning
Embedded Web Services
Bring OCR into PWAs, partner portals, webviews, and messenger mini apps where requiring users to download a separate native application would break the journey.

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Frequently Asked Questions

What is Web OCR SDK? arrow icon

Web OCR SDK is a document recognition technology that runs directly in a web environment. With OCR Studio Web OCR SDK, document scanning, data extraction, and validation can be integrated into browser-based flows without requiring users to install a native app or plugin.

Does Web OCR SDK run entirely in the browser? arrow icon

Yes. Identity documents are scanned on the user’s device, and extracted data stays client-side rather than being sent to external OCR servers. This is possible thanks to OCR Studio’s ultra-lightweight neural networks and the WebAssembly technology.

Which browsers and web environments are supported? arrow icon

The SDK is designed for desktop and mobile browsers, including Google Chrome, Safari, Firefox, and more. Web OCR SDK can also be integrated into PWAs and messenger mini apps.

What documents can I scan with Web OCR SDK? arrow icon

The SDK supports passport scanning, national ID cards scanning, driver’s license scanning, and residence permits scanning. In total, the SDK supports over 4,000 document templates issued in 240+ countries and territories. It can also be used for bank card scanning as well as barcode and QR code recognition.

Can Web OCR SDK perform face matching? arrow icon

Yes. Web OCR SDK can be equipped with specialized selfie-to-ID checks to compare a user’s face with the portrait extracted from their identity document. It can also identify logical inconsistencies in the identity document structure by comparing VIZ with MRZ.

Do users need to install an app or browser plugin? arrow icon

No. ID scanning runs entirely on the web and in a single session. Users do not need to install a separate application or browser plugin.

How is Web OCR integrated into a web application? arrow icon

Web OCR SDK is delivered as high-performance WebAssembly modules with built-in configuration. The SDK also includes server-side authorization, production-ready documentation, a sample application, and integration support.

Can Web OCR SDK be customized for my workflow? arrow icon

Yes. The SDK can be adapted to different document recognition and identity workflows, including custom requirements for supported documents, extracted data, and integration scenarios.

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