This program is designed to convert scanned 12-lead electrocardiograms into PNG format and a web-friendly image size. It assumes that the electrocardiogram (ECG) is printed with a black line on white paper with a red grid. The problems this program is designed to solve are (1) an ECG scanned at relatively high resolution (300 to 600 dots per inch) imposes a substantial load on the web browser because it contains about 6 million pixels which may require 18 to 24 MB of RAM to store for display. Also, (2) typical scanners convert a clean paper ECG into a multitude of colors, include green and blue. The resulting file cannot be compressed efficiently because it does not contain as much redundancy, and thus takes more time to transmit over low-speed network connections.