Introduction
imgkit is a high-performance image processing library for Bun and Node.js, built with Rust and napi-rs.
Why imgkit?
Performance
Built from the ground up for speed:
- 950x faster metadata extraction for WebP images
- 38x faster JPEG metadata parsing
- 2.6x faster under concurrent load
- Zero-copy buffer handling with Rust
- Cross-platform - macOS, Linux, Windows (all architectures)
HEIC Support
The only high-performance image library with native HEIC/HEIF support:
- Read iPhone photos directly
- Convert HEIC to JPEG, PNG, WebP
- Full metadata extraction
- Shrink-on-decode optimization
Modern Architecture
- Written in Rust for memory safety and performance
- TypeScript-first with full type definitions
- Both async and sync APIs
- Cross-platform (macOS, Linux, Windows)
Comparison with sharp
| Feature | imgkit | sharp |
|---|---|---|
| HEIC Support | ✅ | ❌ |
| Blurhash | ✅ | ❌ |
| Metadata Speed | 950x faster | baseline |
| Concurrent Perf | 2.6x faster | baseline |
| Transform Speed | 1.6x faster | baseline |
| TypeScript | First-class | Types included |
Supported Formats
| Format | Read | Write |
|---|---|---|
| JPEG | ✅ | ✅ |
| PNG | ✅ | ✅ |
| WebP | ✅ | ✅ |
| HEIC/HEIF | ✅ | ❌ |
| AVIF | ✅ | ❌ |
| GIF | ✅ | ✅ |
| BMP | ✅ | ✅ |
| TIFF | ✅ | ❌ |
| ICO | ✅ | ❌ |
Next Steps
- Installation - Get started with imgkit
- Quick Start - Learn the basics
- API Reference - Explore all functions