Lottie Optimizer

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

1. Upload one or more Lottie JSON files
2. System automatically performs optimization
3. Preview animation effects in real-time
4. View file size comparison before and after compression
5. 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