版本：4.0.2
- https://cdn.bootcdn.net/ajax/libs/tesseract.js/4.0.2/tesseract.esm.min.js
- https://cdn.bootcdn.net/ajax/libs/tesseract.js/4.0.2/tesseract.min.js
- https://cdn.bootcdn.net/ajax/libs/tesseract.js/4.0.2/worker.min.js
Pure Javascript Multilingual OCR