Free Lottie Reverser
Flip a Lottie animation so it plays backwards — or boomerangs forward-and-back — with live preview, all in your browser.
1. Upload your Lottie JSON file
Drag & drop your file here or click to browse
Only .json files (max. 10MB)
Live Preview
Upload a Lottie JSON file to see the preview
Duration
-
Frames
-
FPS
-
The Best Free Lottie Reverser Online
Want to play a Lottie animation backwards without re-exporting from After Effects? Our free online Lottie reverser flips the playback direction in seconds — or turns any animation into a seamless boomerang loop.
The reversal is smart: we mirror every keyframe’s timing and easing curve, so the backwards motion stays just as smooth as the original. Nothing is uploaded — it all runs locally in your browser, free and private.
How to Reverse a Lottie Animation Online
Reversing a Lottie used to mean editing the source timeline. Now you can do it directly in your browser:
Upload your Lottie JSON file
Drag and drop or click to browse. We accept standard .json files up to 10MB.
Choose Reverse or Boomerang
Reverse plays the whole animation backwards. Boomerang plays it forward then backward as one looping ping-pong.
Preview live
Watch the result play instantly in the built-in player. Switch the background to check it on light and dark surfaces.
Download
Save the new Lottie JSON. The timing is baked in, so it plays reversed everywhere — web, app, or design tool.
No After Effects, no account, no server uploads — the whole thing takes under a minute.
Why Choose Our Lottie Reverser?
A few reasons this is the easiest way to reverse a Lottie animation:
Smooth, Easing-Preserving Reversal
We reflect every keyframe’s bezier easing and spatial path tangents, so the reversed motion keeps the original’s acceleration and feel — no robotic linear stutter.
Boomerang Mode
Turn any clip into a satisfying forward-and-back loop. Perfect for stickers, micro-interactions, and social content that needs to ping-pong seamlessly.
Live Preview
See the reversed or boomerang result the instant you pick a mode. No render button, no waiting.
100% Client-Side Processing
Your Lottie files never leave your computer. All processing happens locally in your browser — completely private, no uploads.
Common Use Cases for Reversing Lottie Files
Reversing timing unlocks a surprising number of effects from a single source animation:
Reverse Loaders & Spinners
Flip the direction of a loading animation to match a different motion language or to signal an undo/closing state.
Boomerang Stickers
Create looping ping-pong stickers and reactions that play forward and back forever without a visible jump.
Build an Outro from an Intro
Reverse an entrance animation to instantly get a matching exit animation — no extra design work.
Undo / Collapse Interactions
Pair a forward micro-interaction with its reverse for natural open/close, expand/collapse, or check/uncheck states.
Satisfying Social Loops
Boomerang short animations into hypnotic, endlessly looping clips that grab attention in feeds.
Quickly A/B Test Motion Direction
Try a reversed version of an animation to see which direction reads better before committing in your design.
Tips for Better Results
To get the most out of the Lottie reverser:
Use boomerang for seamless loops
If you need a clip that never visibly restarts, boomerang mode is ideal — it returns to the exact starting frame.
Reverse keeps your duration
Plain reverse mode preserves the original length and frame rate, so it drops into the same slot as the original.
Combine with the Speed Controller
Reverse first, then adjust speed for a slowed-down or sped-up backwards effect.
Test the loop in context
After downloading, play the file in your real app or page to confirm the loop turnaround feels right.
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.
How do I reverse a Lottie animation?
Upload your Lottie JSON file, keep the mode on “Reverse”, and the preview instantly plays backwards. Click Download to save the reversed animation.
What is boomerang mode?
Boomerang (ping-pong) plays the animation forward and then immediately backward in one seamless loop. It is great for satisfying, looping micro-animations. The duration roughly doubles.
Does reversing keep the easing smooth?
Yes. We mirror each keyframe’s easing curve (and spatial path tangents) so the reversed motion stays as smooth as the original — no robotic, linear stutter.
Will reversing change the animation’s size or colors?
No. Only the timing is reversed. Dimensions, colors, and layer artwork are untouched. Use the Resizer or Color Swapper for those.
Does the frame rate or duration change?
Reverse mode keeps the exact same duration and frame rate. Boomerang mode keeps the frame rate but roughly doubles the duration because it plays both directions.
My animation has many layers — will it still work?
Yes. Every animated layer and property is reversed together so the whole composition runs backwards in sync.
Are my files uploaded to a server?
No. The entire reversal happens locally in your browser using JavaScript. Your file never leaves your device.
Is it free?
Completely free, with no registration, watermarks, or usage limits.