Free Animated Background Generator
Make a looping gradient background in your browser. Start from a preset, tweak the colors, and export an MP4 for websites, reels, and video intros. No signup.
Describe any design in words. Krumzi's AI creates it from scratch — layout, colors, typography, everything. Start Free Trial →
Start from a ready-made animated background.
Tap a preset to load its colors and motion, then tweak anything you want. Purple, blue, sunset, mint, and more, all editable.
This Free Tool Is Just the Start
Krumzi designs complete social media graphics and videos from a text description. No templates. No design skills. Just describe what you want and watch AI build it.
Every layout decision. Every color choice. Every font and composition. Done in seconds. Fully editable. Fully yours.
What is an animated background?
An animated background is a moving gradient that loops behind your content instead of sitting still. You'll also hear it called an animated gradient background, a moving background, or a looping video background. Same idea every time: soft blobs of color drift across the frame, add depth, and give the eye something alive to rest on without pulling focus from the words or product in front of it.
This tool builds one from a mesh gradient. Each color you pick becomes a glowing point of light, and those points slide between positions on a loop. Slow it down for a calm, ambient feel, or speed it up for energy. The result is a clean, modern animated background that reads well full-screen or shrunk down behind a headline.
You can drop it almost anywhere: a website hero, a landing page, a presentation slide, a YouTube intro, a podcast cover, or the background of a reel. Export it as a video, set it to loop, and it plays on repeat with no visible restart. If you want a still version of the same look, the mesh gradient generator makes the static image.
Where a moving background earns its spot.
Anywhere a flat color feels dead, a looping background adds life. Here's where creators reach for one most.
Website heroes
Set a looping video background behind your headline and CTA. It adds motion to a landing page without a heavy stock video.
Presentations
Drop an animated background onto a title slide or section break. It makes a deck feel designed instead of default-template plain.
Video intros
Open a YouTube video or course lesson on a moving gradient, then layer your logo and title on top.
Reels & stories
Export a vertical 1080x1920 loop and use it as the base layer for a reel, a story, or a quote post.
Live streams
Run it as a starting-soon or be-right-back screen in OBS or Streamlabs so the frame never goes static.
Product mockups
Frame a screenshot on a soft animated gradient for a launch clip, then layer your product shot on top.
Building a full scene? Wrap a screenshot in motion with the screenshot to video tool, add a count up animation for your stats, or browse all free tools.
Make an animated background in four steps.
Pick a preset or your colors
Start from a preset like Purple Waves or Ocean Blue, or set your own palette. Each color becomes a soft blob of light in the gradient.
Set the motion
Use the speed slider to make it drift slow or fast, and set the loop length from 1 to 10 seconds. Hit space to reshuffle the layout.
Choose your size
Pick landscape 1920x1080, square 1080x1080, or vertical 1080x1920 so it fits a website hero, a feed post, or a reel.
Export the MP4
Hit export and Krumzi renders your looping animated background as an MP4, ready to drop onto a site, a slide, or a video timeline.
MP4 out of the box. GIF in one extra step.
The exported loop drops straight onto a website, into a slide set to autoplay, or onto a Premiere, CapCut, or Final Cut timeline as a background layer.
The MP4 you get
A looping clip up to 1920x1080, encoded with H.264 so it plays everywhere and stays small. Hit export, Krumzi renders it, and the file lands in your downloads. No watermark, no signup.
Need a GIF background?
Export the MP4, then run it through a free converter like ezgif or CloudConvert. We render video on purpose: the gradient stays smooth, and an MP4 is a fraction of a GIF's file size at the same quality.
Looping on a website
Embedding the background on a site? Use the MP4 in a video tag with autoplay, muted, loop, and playsinline. It behaves like a looping GIF at a tenth of the weight, so your page still loads fast.
Frequently asked questions
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Designing more than a background? Krumzi handles the rest.
A moving background sets the scene. When you need the full design (social posts, slides, thumbnails) Krumzi's AI builds it from a sentence.