Getting your certification for CPR online is a quick and inexpensive way of achieving your certification. These classes are usually done by reading the material and then taking a test at the end. Once the student has passed the test, they can print the certification at home themselves. This service is an affordable way of achieving a certification for CPR online in the comfort of ones own home without having to sit through what is sometimes up to a 6 hour class. Many websites offer this service but potential users should be careful to research multiple websites for credibility and accreditation.