This banking utility provides a visual layout preview and simulated demonstration of the E-13B Magnetic Ink Character Recognition (MICR) band printed along the bottom edge of US and Canadian paper checks. The bottom 5/8-inch band on standard checks encodes the nine-digit American Bankers Association (ABA) routing transit number, the customer account number, and the sequential check number.

### Implementation Reality & Optical Simulation This tool loads your uploaded check or payroll slip image directly into local browser memory via the HTML5 FileReader API for image previewing. It displays a calibrated sample demonstration of standard E-13B MICR line parsing: - Routing Transit Number: The nine-digit transit code enclosed between transit delimiter glyphs. - Account Number: The on-us account identifier ending with the on-us delimiter glyph. - Check Serial Number: The four-digit sequential check number.

Note: This tool serves as a reference preview interface illustrating standard E-13B MICR field positioning. It does not perform dynamic OCR font recognition on arbitrary live checks.

### Concrete Demonstration Values When you drop an image of a check into the upload zone, the preview interface renders:

Raw MICR String: ⑆122000496⑆ 8812903411⑈ 1042 Routing Number (ABA): 122000496 Account Number: 8812903411 Check Serial #: 1042

Clicking Copy Details places the formatted routing, account, and check numbers directly onto your clipboard.

### Privacy & In-Browser Processing Check images loaded into this page are processed purely in client-side memory using local data URLs. No check images, bank account details, or routing credentials are ever transmitted across external networks or stored on a remote server.