Commercial OCR services charge per page or have monthly limits. Processing hundreds of scanned contracts, reports, and invoices adds up fast.
Local OCR is better: install once, unlimited use, data never leaves your machine.
Setup
DocKit Pro's OCR module uses Tesseract, supporting 100+ languages including Chinese, English, Japanese.
# Windows: download from https://github.com/UB-Mannheim/tesseract/wiki
# Check installation
tesseract --version
Three Common Scenarios
Extract text from scanned image:
python main.py ocr image --input scan.jpg --lang chi_sim --output result.txt
Extract full text from scanned PDF:
python main.py ocr pdf --input contract_scan.pdf --lang chi_sim+eng --output extracted.txt
Batch process entire folder:
python main.py ocr batch --input ./scans/ --lang chi_sim --output ./results/ --format txt
Output formats: txt, json (with coordinates), csv (for tabular data).
Real Accuracy Results
Test: 100 printed contract scans, A4, 300dpi, black and white.
| Document Type | Accuracy |
|---|---|
| Standard printed font | ~98% |
| Clear handwriting | ~72% |
| Low-quality scan (150dpi) | ~85% |
| Tabular data | ~94% |
Print document accuracy rivals commercial products. Handwriting is a universal limitation across all OCR tools.
Cost Comparison
| Service | Price | Monthly Limit | Privacy |
|---|---|---|---|
| Adobe Acrobat OCR | $199/year | Unlimited | Uploads to cloud |
| Cloud OCR API | $0.004/request | Pay per use | Uploads to cloud |
| DocKit Pro (Tesseract) | $24.84 one-time | Unlimited | Local only |
For contracts, financial documents, and sensitive materials — local processing matters.
Get DocKit Pro: https://payhip.com/b/9dTqi
More Python automation: https://wdsega.github.io
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