rusto-web

Pure Web and Browser OCR library for RustO! powered by PaddleOCR models.

Features

• Canonical API: 100% consistent with RustO across Android, iOS, .NET, and React Native.
• Multiple Source Types: Works seamlessly with URLs, Base64 strings, Blob, File, HTMLImageElement, HTMLCanvasElement, ImageData, ImageBitmap, or byte buffers.
• Off-Thread Execution: Web Worker support keeps the browser UI thread running smoothly at 60fps.
• Flexible Output: Supports 'lines', 'words', and formatted 'spatial' text outputs.
• Zero Dependencies: Lightweight with full TypeScript definitions.

Installation

npm install rusto-web
# or
yarn add rusto-web
# or
pnpm add rusto-web

Quick Start

import { initialize, detectText } from 'rusto-web';
import { getModelUrls } from 'rusto-models-ppocrv6-tiny';

// 1. Initialize with pre-trained models
const urls = getModelUrls('/models/ppocrv6-tiny');

await initialize({
  preset: 'ppv6',
  models: {
    detection: urls.detection,
    recognition: urls.recognition,
    dictionary: urls.dictionary,
  },
});

// 2. Perform OCR on an image element, File, Blob, or URL
const results = await detectText(document.getElementById('my-image') as HTMLImageElement);

for (const result of results) {
  console.log(`${result.text} (score: ${result.score})`);
}

// 3. Or obtain formatted spatial text layout
const spatialText = await detectText('https://example.com/receipt.jpg', {
  output: 'spatial',
});
console.log(spatialText);

License

MIT License