... const { data } = await worker.recognize(imageDataUrl); await worker.terminate(); return { text: data.text, confidence: data.confidence }; } A few things I learned Cropping before OCR dramatically improves accuracy. Feeding the model a focused region beats feeding it a full screenshot. Upscaling small text helps Tesseract read screen-rendered fonts, especially lightweight UI text. Web Workers are essential. OCR blocks the main thread without them. Language packs are heavy. Loading only the languages the user needs is critical for first-time performance. Questions for the community ...