Teaching Quran online is a prestigious and honourable undertaking. We know from ahadith that the best of people are those who learn the Quran and teach it. The Quran teacher you select should preferably have an Islamic education from a reputable Islamic University or Academy. You can ask the tutor for Quran related certificates which are listed in their profile. Several Quran tutors have Ijaza (permission to teach Quran) from an Institute or Organization. You should consider tutors with Ijaza if you would like to get Ijaza yourself to further teach Quran online.
Secondly, look at the work experience of the Quran teacher who may have several years of experience teaching Quran online. You should consider learning from an experienced tutor because he or she will have mastered the ability to teach Quran online using a computer.
Lastly, you should consider whether you want to learn Quran online from a native Arabic speaker. Especially when it comes to learning Tajweed and Hifz, some Quran students prefer to have a tutor who is a native Arab. However, we suggest you also consider that when it comes to learning Tajweed rules, several non-native Quran teachers have spent many years perfecting the rules of Tajweed and they can be very good online Quran teachers for Tajweed too.