Invoice Parsing in Next.js — Receipt & Invoice Extraction for App Router

Use DocuParseAPI from a Next.js route handler and return clean receipt and invoice JSON to your app.

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✓ Free DocuParseAPI account✓ Next.js server runtime✓ API key

What gets extracted

merchantThe vendor or store name

totalThe final charged amount including tax

subtotalThe pre-tax amount

taxThe tax amount charged

dateInvoice or transaction date (ISO 8601)

due_datePayment due date, or null if not present

invoice_idInvoice number or receipt ID from the document

currencyISO 4217 currency code (USD, EUR, GBP, etc.)

payment_methodCard type, cash, or other payment method

line_itemsArray of items with description, quantity, unit_price, total

MISSING_API_KEYAuthorization header missingAdd header: Authorization: Bearer YOUR_KEY

INVALID_API_KEYKey not recognisedCheck key in dashboard — regenerate if needed

LIMIT_EXCEEDEDMonthly document limit reachedUpgrade at docuparseapi.com/pricing

UNSUPPORTED_FILE_TYPEFile format not supportedUse PDF, JPG, or PNG only

FILE_TOO_LARGE_AUTHENTICATEDFile exceeds 10 MBCompress the file before sending

EXTRACTION_FAILEDDocument could not be parsedTry a cleaner scan or different file

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