Mega menu appears when users hover a menu item in the header. Favour mega menus to drop-downs if you have to present numerous options as it reduces the amount of click through.
Keep in mind that presenting too many options at once can increase the cognitive load, making it harder for users to find what they need at best and leading to action paralysis at worst.
For this reason:
- Organise mega-menu items in an orderly fashion and logically. Mind the order of your categories (the first ones being the most important/popular ones, verify users behaviour and analytics). Don’t hesitate to place an additional category underneath another in the same column.
- Make sure each category adds real value. Refrain from adding irrelevant additional categories just because there is space.
- Make sure to keep labels concise and easily understandable (avoid acronyms). Doing otherwise can make it hard for users to find the information they seek and could result in a drop-off.
- Make sure the labels within a category are consistent with each other and with their own category. Inconsistencies can confuse users and result in engagement loss.
It is recommended, when relevant, to use a visual mega menu (photos or icons) as it catches users attention and helps them navigate more intuitively. It also represents a good opportunity to display the product/service portfolio offered at a glance.