CNAB File Reader
Read Brazilian CNAB 240 and CNAB 400 banking files and display records decomposed by type.
Summary
Records
What is CNAB?
CNAB is the Brazilian standard for banking interchange files (collection, payments, returns). Each bank implements small variations.
Files use fixed-width records (240 or 400 chars per line). The first character indicates the type: 0=header, 1=batch header, 3=detail (with A/B/C/... sub-segments), 5=batch trailer, 9=trailer.
This tool shows the count per type and the content of the first lines for visual inspection. For real integration, use bank-specific libs.
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