Free Online AI OCR in 2026: PaddleOCR (87k Stars), Tesseract and EasyOCR Compared - Extract Text from Images and PDFs

PaddleOCR (87,007 stars), Tesseract (75,756) and EasyOCR (29,868) are the three big open-source OCR engines - here is which to use for Chinese text, scanned PDFs and handwriting.

💡 What You Will Learn

PaddleOCR (87,007 stars), Tesseract (75,756) and EasyOCR (29,868) are the three big open-source OCR engines - here is which to use for Chinese text, scanned PDFs and handwriting.

## The short answer **PaddleOCR** (87,007 stars, Apache-2.0) from Baidu is the best free engine for Chinese and mixed-language text - its PP-OCRv4 models top most commercial SDKs on Chinese benchmarks. **Tesseract** (75,756 stars, Apache-2.0) is the veteran: 100+ languages, but weaker on Chinese than PaddleOCR. **EasyOCR** (29,868 stars, Apache-2.0) is the easiest Python API with 80+ languages built on deep learning. ## Quick start - PaddleOCR (best for Chinese) ```bash pip install paddlepaddle paddleocr ``` ```python from paddleocr import PaddleOCR ocr = PaddleOCR(use_angle_cls=True, lang='ch') # Chinese + English result = ocr.ocr('receipt.jpg', cls=True) for line in result[0]: print(line[1][0], line[1][1]) # text + confidence ``` ## Which engine for which job | Engine | Stars | Strength | Weakness | |:-------|------:|:---------|:---------| | PaddleOCR | 87,007 | Chinese, layout, tables | Heavier install (PaddlePaddle) | | Tesseract | 75,756 | 100+ languages, mature | Needs training for hard layouts | | EasyOCR | 29,868 | Simplest API, good accuracy | Slower, heavier models | ## Real numbers - PaddleOCR PP-OCRv4: ~90%+ accuracy on standard Chinese scene-text benchmarks. - Tesseract handles clean printed English at ~95%+; drops quickly on photos and complex layouts. - EasyOCR on CPU processes a typical receipt image in 2-5 seconds. ## FAQ **Q: How do I OCR a PDF?** A: Convert pages to images with PyMuPDF (10,400 stars), then run OCR per page. Or use OCRmyPDF which wraps Tesseract for PDFs directly. **Q: Is there a free online OCR service?** A: Yes - Google Lens, and open-source web UIs built on these engines. For private documents, self-host: these engines all run locally.