Ionic v2 how to insert a logo in header
<ion-header>
<ion-navbar>
<ion-title>
<img alt="logo" height="40" src="img/logo.png" >
</ion-title>
</ion-navbar>
</ion-header>
Headers in Ionic have a height of 44px. So, you need to make sure the logo is sized less than that.
.title-image {
margin-top: 8px;
height: 27px;
}