JPG to AVIF Converter
Convert JPG/JPEG images to AVIF format - the next-generation image format with highest compression (40-60% smaller than JPG). Based on Google Squoosh. Upload up to 100 files (max 100 MB each).
Drop JPG/JPEG images here or click to browse
Maximum 100 files • 100 MB per file • 0/100 uploaded
About JPG to AVIF Conversion
This tool converts JPG/JPEG images to AVIF format - the next-generation image format using WebAssembly. AVIF provides the highest compression ratio (40-60% smaller than JPG) while maintaining excellent quality. Based on Google Squoosh technology. All processing happens locally in your browser for maximum privacy and security.
Features:
- • Upload up to 100 JPG/JPEG images at once
- • Maximum 100 MB per file
- • AVIF encoder based on Google Squoosh
- • 40-60% smaller than JPG files
- • 20-30% smaller than WebP files
- • Adjustable quality (0-100, default 75)
- • Encoding effort control (0-10, speed vs compression)
- • Advanced options: chroma subsampling, tuning modes
- • Thumbnail preview for each image
- • Individual or batch download (ZIP)
- • Real-time conversion statistics
- • Estimated conversion time
AVIF Advantages:
- • 40-60% smaller than JPG with excellent quality
- • 20-30% smaller than WebP at same quality
- • Highest compression efficiency of any format
- • Supports HDR and wide color gamut
- • Next-generation format for modern web
- • Based on AV1 video codec
- • Optimal for web performance and page speed
- • Better compression than JPEG 2000 and HEIC
Quality Guidelines:
- • 85-95: Excellent quality, near-lossless
- • 75-85: Very good quality, recommended for most use cases (default: 75)
- • 60-75: Good quality, smaller files
- • Below 60: Lower quality, smallest files
- • AVIF at quality 75 looks better than JPEG at quality 85
- • JPG is already lossy, AVIF can further compress without visible loss
Encoding Effort Guide:
- • 0-2 (Fast): Quick conversion, good quality
- • 3-5 (Balanced): Good balance (recommended, default 4)
- • 6-8 (High Quality): Better compression, slower
- • 9-10 (Maximum): Best compression, significantly slower
- • Higher values = slower conversion but smaller files
- • For batch processing, effort 4-5 is recommended
Advanced Options Explained:
- • Chroma Subsampling: Controls color detail vs file size
- • 4:4:4: Full color resolution, largest file
- • 4:2:2: Balanced (good for most images)
- • 4:2:0: Reduced color detail, smallest file (recommended)
- • Tuning Mode: Optimization target (Auto recommended)
Browser Support:
- • Chrome 85+ (2020)
- • Firefox 93+ (2021)
- • Safari 16+ (2022)
- • Edge 85+ (2020)
- • Mobile: Chrome for Android, Safari for iOS 16+
- • Over 85% of global browsers support AVIF
When to Use AVIF:
- • Modern websites targeting latest browsers
- • High-quality images needing smallest file size
- • Web performance optimization (Core Web Vitals)
- • Mobile-first applications
- • Progressive web apps (PWAs)
- • E-commerce product photos
- • Photography portfolios
Technical Details:
- • Uses jSquash library based on Google Squoosh
- • Single-thread WASM build for Next.js compatibility
- • WASM encoder ~2MB, cached after first load
- • High-quality JPEG decoder from MozJPEG
- • AV1 Image File Format (based on AV1 video codec)
- • All processing happens client-side (no server upload)
Privacy: All image conversion happens in your browser using WebAssembly (Google Squoosh technology). Your images are never uploaded to any server. WASM modules (~2MB) are downloaded once and cached. Everything is processed locally for maximum security and privacy.
Note: AVIF encoding is more CPU-intensive than WebP or JPEG. Higher effort settings (6-10) can significantly increase conversion time. For large batches, consider using effort 3-5 for good balance between speed and compression. First-time use requires downloading a 2MB WASM module (cached after first load).
JPG to AVIF: JPG is already a lossy format, meaning some quality has been lost during JPG compression. AVIF can further compress JPG files by 40-60% without significant visible quality loss. Using quality 75 provides excellent results for most photos and is recommended for web use.