I made this awesome Indra OCR port for the browser, it's way faster than Tesseract. It uses GPU acceleration automatically when available. Give it a go if you need OCR in your webapp.
https://github.com/RyanCasas/indra-ocr-wasm
GitHubGitHub - RyanCasas/indra-ocr-wasm: Browser WebAssembly port of Indra OCR 0.3.2, with no OCR server.Browser WebAssembly port of Indra OCR 0.3.2, with no OCR server. - RyanCasas/indra-ocr-wasm