English OCR is the most mature profile and reaches 99%+ character accuracy on clean 300 DPI scans. Mixed-language documents should use a combined profile.
In practice: (1) Use English-only for Latin-script documents. (2) For documents mixing English and Chinese, pick the combined profile. (3) Invoice and form scans benefit from straightening the page first.
Frequently asked questions
Can OCR read phone photos of documents?
Yes, but perspective and shadow reduce accuracy — photograph straight-on in even light.
Are numbers and codes recognised?
Yes, including invoice totals and reference numbers, though always spot-check financial figures.
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