Modern web developers are reviving a childhood classic—flipbook animation—using image sequence animations on HTML canvas elements. These aren't videos, but hundreds of individual images played in sync with scrolling, offering seamless, interactive visuals. Popular on high-end product pages, this method gives designers total control without video encoding headaches.

But there's a hidden cost. Without optimization, browsers redraw the same frame up to 60 times per second, overworking GPUs and draining batteries—especially on retina displays. A simple fix changes that: track the last drawn frame and skip redundant drawImage() calls.

This tweak cuts idle GPU usage by up to 80%, according to real-world testing. The adjustment maintains smoothness during interaction but spares system resources when the animation pauses. Paired with smart preloading and WebP compression, it’s a powerful tool for performance-minded developers crafting immersive digital experiences.