Accelerate downloads by up to 500 percent, schedule downloads, recover and resume broken downloads. The program features an adaptive download logic accelerator, dynamic file segmentation, and multipart downloading technology to accelerate the download process. It also reuses available connections without additional connect and login stages to improve download performance. Comprehensive error recovery and resume capability will restart broken or interrupted downloads due to lost connections, network problems, computer shutdowns, or unexpected power outages. Internet Download Manager can connect to the Internet at a set time, download the files you want, then disconnect or even shut down your computer when its done. Smart in-speed technology dynamically adopts all settings to your particular connection type in order to maximize your download speed.

Internet Download Manager supports firewalls, proxy and mirror servers, FTP, HTTP and HTTPS protocols, redirects, cookies, download queues, directories with authorization, MP3 audio and MPEG video content processing, and a large number of different server platforms. The program integrates seamlessly into Microsoft Internet Explorer, Netscape, MSN Explorer, OL, Opera, and Mozilla browsers to automatically handle your downloads.

Version 4.03 adds many features, including customization, new 3D look, skins, revised Download with IDM feature, improved download-link-capturing logic, download-link capturing from antileech plug-ins, HTTPS support, an improved scheduler pro, pipelining for FTP commands, built-in download accelerator, enhanced virus protection on download completion, progressive downloading with quotas, and a wealth of other improvements and bug fixes.