Both are very very important for getting good result. But firstly you should do on-page seo because if your on page is good than you will get the good rank

On page have much priority bt u hv to do both on page n off page regularly to get good result.

Seo is effective way to optimize the site. They both on page and off page activities are important to optimize the site in search engine. Off page techniques are used to increase the traffic.

i think both of them are equally important but in my view on page optimization is your first priority to start.

Hi,

always the possibility of reviving page rank through off - page seo