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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>GIF Background Demo</title> <style> /* The magic container */ .gif-background { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; /* Push it behind everything */ overflow: hidden; } .gif-background img { width: 100%; height: 100%; object-fit: cover; /* Crucial: Covers the screen without distortion */ object-position: center; }
full-screen-animated-gif-background
In this post, I’ll show you how to properly implement a full-screen animated GIF background, optimize it so it doesn’t crash mobile devices, and explore when you should actually use a GIF versus a video file. Before we optimize, here is the raw, functional code. This works in every browser that has supported CSS since 2010. full screen animated gif background
object-fit: cover; ensures your GIF scales like a cinematic backdrop. It will crop the edges to fill the screen, but never stretch or squish. The 3 Big Problems (And Solutions) 1. The Performance Hit A 1920x1080 GIF at 30fps can easily be 30MB+ . That’s absurd for a background. object-fit: cover; ensures your GIF scales like a
But let’s be honest: Slapping a 50MB GIF onto a background can destroy your browser tab. The Performance Hit A 1920x1080 GIF at 30fps