OCR Engines

OCR Engine	Best For	Notes
Google Cloud Vision	Complex background, rotated/colored text	⭐⭐⭐⭐⭐ 🌐 Online Cloud-based AI Paid (Free tier available)
Azure Cloud Vision	Complex background, rotated/colored text	⭐⭐⭐⭐ 🌐 Online Cloud-based AI Paid (Free tier available)
Nanonets OCR small	Complex background, rotated/colored text	⭐⭐⭐🌠 Offline - Custom AI-based (LLM)
Fast OCR	Moderate background noise, multi-color text	⭐⭐⭐ Offline Modern OCR Engine
Gemma 3 Vision	Complex background, rotated/colored text	⭐⭐⭐ Offline - Custom AI-based (LLM)
EasyOCR	Moderate background noise, multi-color text	⭐⭐ Offline - Custom Modern ML-based
Tesseract OCR	Basic black text on white background	⭐ Offline Traditional OCR engine
Windows OCR	Basic black text on white background	⭐ Offline Traditional OCR engine
Google Lens	Complex background, rotated/colored text	⭐⭐⭐⭐ 🌐 Online Cloud-based AI Unstable
Custom - Command Line	Custom workflows and integration	Requires setup knowledge Highly flexible for developers
Custom - HTTP POST	Custom workflows and integration	Requires setup knowledge Highly flexible for developers