Your website may need redesigning if it has not been updated in over three years, loads slowly, or has low search engine rankings. When redesigning, make sure the new site is visually appealing, content-rich, and provides all necessary customer information. Key aspects of an effective redesign include using bold colors to grab attention, minimalistic design without clutter, new web fonts, parallax scrolling, responsiveness on all devices, and social media sharing buttons. Elements to avoid are unnecessary animations, glittering text as distractions, and overloading pages with too many elements.