The Indian visa online system allows applicants to apply for various types of visas conveniently through the official website. Applicants need to fill out an online application form, upload required documents such as passport copies and photographs, and pay the applicable fees electronically. The system offers easy tracking of the application status and allows for online submission of additional documents if required. Once approved, applicants receive their e-visa electronically, streamlining the entire visa application process for travelers to India.