Chinese Bank Card Number Extractor
Intelligently identify and extract Chinese bank card numbers from text, supporting multiple formats, Luhn algorithm validation and batch export
Chinese Bank Card Number Extractor Documentation
What is Chinese Bank Card Number Extractor?
Chinese Bank Card Number Extractor can automatically identify and extract all Chinese bank card numbers from text. Widely used in data cleaning, financial processing, account information extraction and other scenarios. Supports standard Chinese bank card number formats (13-19 digits), such as 6222021234567890, 6222 0212 3456 7890, 6222-0212-3456-7890 and other formats.
Core Features
Usage Instructions
Text Input
Paste or enter any text containing bank card numbers in the input box. Supports financial records, account information, transaction records and any mixed content containing bank card numbers. The system will intelligently identify and extract all bank card numbers.
Real-time Extraction
After entering text, the system automatically identifies all bank card numbers. Supports multiple formats like 6222021234567890, 6222 0212 3456 7890, 6222-0212-3456-7890, automatically validates bank card number validity (13-19 digits, cannot start with 0).
Smart Options
Provides options for deduplication, Luhn algorithm validation and unified format display. Deduplication removes duplicate card numbers, Luhn algorithm validation ensures extracted card numbers comply with validation rules, unified format display removes all separators.
Export Function
Supports one-click copy to clipboard, or download as timestamped TXT file for easy import into other tools or data analysis.
Frequently Asked Questions
What bank card number formats can the tool recognize?
This tool supports recognition of standard Chinese bank card number formats (13-19 digits, cannot start with 0), including: 6222021234567890 (pure numbers), 6222 0212 3456 7890 (space-separated), 6222-0212-3456-7890 (hyphen-separated) and other formats.
What does Luhn algorithm validation do?
Luhn algorithm is a validation algorithm for bank card numbers used to verify card number validity. When Luhn algorithm validation is enabled, the tool only extracts bank card numbers that pass validation, which filters out invalid card numbers and improves extraction result accuracy.
What is the length range of bank card numbers?
Chinese bank card numbers typically range from 13-19 digits and cannot start with 0. The most common bank card number lengths are 16 and 19 digits. The tool automatically validates extracted bank card numbers against this range.
How secure is the data?
Completely secure! This tool uses pure frontend technology. All bank card number extraction and processing operations are completed locally in your browser, and no data is sent to any server. Your input text content and extracted bank card number list will not be uploaded, stored or recorded, completely protecting your privacy.