Free Background Loop Generator
Build a subtle animated background loop as Lottie — floating, gently pulsing shapes on a color canvas, fully customizable.
Background settings
Live Preview
Size
-
Duration
-
FPS
30fps
The Free Animated Background Loop Generator
Want a subtle animated background behind your hero section or card? Our free background loop generator builds one as a Lottie — floating, gently pulsing shapes on a color canvas.
Set the size, shape count, colors, opacity and speed, watch the live preview, and download a seamlessly looping Lottie you can drop in behind any content. No design tool, no upload — it is generated in your browser and is fully deterministic, so the same settings always produce the same background.
How to Create an Animated Background
Ambient backgrounds usually mean fiddling in After Effects. Build one in a few clicks:
Set the canvas and colors
Choose the width, height, shape color and background color to match your design.
Configure the shapes
Pick circles or squares and set how many, how big, and how opaque they are.
Tune the motion
Adjust the speed so the drift and pulse feel as calm or lively as you want.
Preview and download
Watch it loop in the live preview, then download the Lottie JSON.
No upload, no account — generate a background in under a minute.
Key Features
Configurable Layout
Control canvas size, shape count, size and opacity so the background fits behind any content.
Two Shape Styles
Choose soft circles or lightly rounded squares, in your shape and background colors.
Seamless Loop
Every shape returns to its start, so the animation loops with no visible jump — perfect for continuous playback.
Live Preview
Every change updates the preview instantly, so you can dial in the mood before you download.
Popular Use Cases
Hero Section Backgrounds
Add gentle motion behind a landing-page hero without a heavy video.
Card & Panel Ambience
Give cards, modals or panels a subtle animated backdrop that feels alive.
Loading Screens
Use a calm floating background while an app boots or a page loads.
App Splash & Onboarding
Layer an ambient loop behind onboarding content for a polished first impression.
Presentation Backdrops
Export a looping background to sit behind slides or a kiosk display.
Design-System Asset
Generate a consistent, reproducible background loop to ship in your component library.
Pro Tips
Keep it subtle
Lower the opacity and speed so the background supports content instead of competing with it.
Match your palette
Set the shape color close to the background color for a soft, tonal effect.
It loops forever
Play the file on repeat behind your content — the loop has no visible seam.
Size it to your container
Set the width and height to your container’s aspect ratio so shapes aren’t clipped oddly.
Privacy and Security
We take your privacy seriously. Unlike most online converters that upload your files to remote servers, our tool processes everything locally.
No uploads – Your files are processed entirely in your browser. They never touch our servers.
No tracking – We don't log which files you convert or what settings you use.
No accounts – Use the tool immediately. No registration, no personal data required.
Inspect it yourself – Open DevTools and watch the network tab. You'll see zero file uploads.
Frequently Asked Questions
Everything you need to know about Lottie animations and our tools.
What does this generate?
A looping Lottie animation of floating, gently pulsing shapes over a colored background — the kind of subtle ambient motion you see behind hero sections and cards.
How do I use the generated Lottie?
Download the JSON and play it with any Lottie player behind your content. Because it loops seamlessly, it can run continuously.
Can I match my brand colors?
Yes. Set the shape color and the background color, and tune the count, size, opacity and speed to fit your design.
Circle or square shapes?
Both. Choose circles for soft, bubbly motion or squares (with slightly rounded corners) for a more geometric feel.
Does it loop seamlessly?
Yes. Each shape returns to its starting position and opacity at the end of the cycle, so the loop has no visible jump.
Is it deterministic?
Yes — the same settings always produce the same layout, so you can reproduce a background exactly.
Are my settings uploaded to a server?
No. The Lottie is generated entirely in your browser. Nothing is uploaded.
Is it free?
Completely free, with no registration, watermarks, or usage limits.