March 2, 2026 7 min read

    OCR Receipts API Guide: Extract Line Items Reliably

    A field-level playbook for receipts with noise, skew, and multi-language text.

    Receipt OCR quality depends on image cleanup and strict post-processing. Start with DPI and segmentation tuning, then normalize extracted values.

    Accuracy strategy

    • Target 200–300 DPI equivalent
    • Crop borders and remove background shadows
    • Use language packs explicitly
    • Apply regex normalization for totals and dates

    Field mapping

    Map `merchant`, `txn_date`, `subtotal`, `tax`, `tip`, `grand_total`, and `currency`. Keep confidence score thresholds per field.

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