CNAB File Reader
Upload CNAB 240 or CNAB 400 bank files and view all records in a readable table with decoded field labels.
Drag and drop your CNAB file here
.txt, .rem, .ret, .cnab
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CNAB File Reader — Parse Brazilian Banking CNAB 240/400 Files
The CNAB File Reader parses Brazilian banking CNAB 240 and CNAB 400 remittance and return files, displaying their contents in a structured, human-readable format. Upload your CNAB file and instantly see headers, trailers, details, and every field decoded with its meaning.
CNAB (Centro Nacional de Automação Bancária) files are fixed-width text files used by Brazilian banks for electronic fund transfers, boleto processing, payroll, and payment collections. The tool identifies the file layout (240 or 400 positions per line), detects the originating bank, and breaks each record into its component fields — company codes, bank branches, account numbers, payment amounts, dates, and status codes — according to FEBRABAN specifications.
Financial analysts use this tool to inspect return files and debug payment rejections. ERP developers use it to validate CNAB output from their systems before sending to banks. Accountants review remittance files to verify payment batches and reconcile bank statements with internal records.
CNAB File Reader is part of the facilita.tools suite of free browser-based financial utilities. Available in Portuguese, English, and Spanish, optimized for desktop and mobile browsers.