Lottie Optimizer is an animation file compression tool designed for web use. Through intelligent algorithms, it removes redundant data and significantly reduces file size without affecting animation effects, improving page loading performance.

Tool Introduction

Lottie animations exported typically contain extensive metadata for editing, layer names, and debugging information, which are unnecessary for actual playback. This tool automatically cleans redundant information, effectively compressing file size.

Core Features

Batch Optimization: Process multiple Lottie JSON files simultaneously
Smart Compression: Remove names, indices, and other editor-specific data
Precision Optimization: Standardize numerical precision to 3 decimal places
Real-time Preview: View animation effects and file size comparison
Direct Download: One-click download of optimized files

How to Use

Upload one or more Lottie JSON files
System automatically performs optimization
Preview animation effects in real-time
View file size comparison before and after compression
Click download button to save optimized files

Optimization Effect Example

Before: 125.48 KB
After: 67.92 KB
Compression: -46%

Optimization Principles

The tool performs the following optimizations:

Metadata Cleanup

Remove layer names (nm)
Delete match names (mn)
Clear hidden flags (hd)
Remove index information (ix)

Data Reduction

Standardize numerical precision to 3 decimal places
Maintain integer integrity
Clean empty effects arrays
Remove invalid properties

Structure Optimization

Simplify nested structures
Compress JSON format
Optimize array representation

Use Cases

Web animation performance optimization
Mobile app resource compression
Reduce CDN traffic costs
Improve user experience
Accelerate page loading speed

Technical Features

Completely preserves animation visual effects
Automatically handles various Lottie versions
Supports complex animation structures
Processing completed in browser locally
No file upload, protecting privacy

Notes

Only supports standard Lottie JSON format
Optimization removes layer names, recommend keeping source file backup
Animation functionality and effects remain completely unchanged after optimization
All processing completed locally, ensuring file security
Format errors will display corresponding prompts