A visitor visa, also referred to as a Temporary Resident Visa (TRV), is an immigration document that allows foreign nationals to travel to and enter Canada. Unless you are from a visa-exempt country, you will need a visitor visa to enter Canada.
Extending a Visitor Visa
Visitor visas, whether single entry or multiple entry, allow foreign nationals to legally live in Canada for up to six months at a time. At the end of this period, your legal status will expire, and you must leave Canada. Foreign nationals who would like to extend their stay beyond six months must apply to do so while their temporary resident status is still valid. You should apply for an extension at least 30 days before your status will expire. If your current visa expires while your extension application is still being processed, you may remain in Canada while waiting for a decision to be made
Super Visa
It is a long-term, multiple-entry visa for parents and grandparents of permanent residents or Canadian citizens. The Parent and Grandparent Super Visa (Super Visa) is a temporary resident permit that allows parents and grandparents to stay for up to 2 years in Canada per visit. It is valid for up to 10 years.
