Are video and animation used only when they add genuine value to the user?
Although video is used less commonly in web design than imagery, when it is used it almost always constitutes the largest use of energy on the website. Plus, video or audio files that automatically play upon page load not only use up unnecessary bandwidth but can also undermine user experience.
Likewise, animations can consume a lot of energy both through larger files and increased need for processing. Keep in mind that movement directs user eyes to that place, which can distract them from their purpose for visiting your page in the first place. Plus, excessive motion can sometimes cause dizziness, nausea, and vertigo for people with vestibular disorders.
Think carefully about video and animation use, ensuring that they genuinely add value for users. Also, consider different ways to achieve the same effect with the most efficient technologies available.