Transform standard JPEG photos into next-gen AVIF images. Cut image payload weight by 50% or more to accelerate page loads and optimize Core Web Vitals.
Output Format
Evaluate how JPG and AVIF compare across compression algorithms, browser compatibility, transparency, and practical performance.
| Specification | JPG | AVIF (Target) |
|---|---|---|
Codec Generation | Legacy JPEG (1992) | Modern AV1 (2019+) |
Compression Efficiency | Baseline standard | Up to 50% higher compression |
Blocking Artifacts | Visible 8x8 block grid at low bitrates | Smooth deblocking and grain synthesis |
High Dynamic Range | Not standard | Native 10-bit and 12-bit HDR support |
SEO & Performance | Common PageSpeed flag | Passes "Serve images in next-gen formats" |
Format Optimization Guide
Google PageSpeed Insights and Lighthouse consistently recommend "Serve images in next-gen formats" to improve Largest Contentful Paint (LCP). Large hero banners and product photography saved as traditional JPEGs are frequently the single heaviest resources on the web.
AVIF applies modern intra-frame prediction to preserve skin tones, high-frequency details, and depth with a fraction of JPEG’s byte size.
Convert your entire photo collection or ecommerce catalog right in your browser. All encoding utilizes WebAssembly, ensuring maximum performance without uploading proprietary product imagery or personal photos to external servers.
Common questions about converting JPG images to AVIF format.
Typically, AVIF reduces file sizes by 40% to 60% compared to standard JPEGs at equivalent or better perceived visual quality.
No. AVIF excels at preserving sharp edges and smooth gradients without the harsh blocky artifacts common in heavily compressed JPEGs.
Yes. WordPress 6.5+ natively supports AVIF image uploads, and Shopify as well as all major modern CDNs (Cloudflare, Fastly) fully support AVIF delivery.
Yes, our converter is completely free with no file limits or watermarks.
From the SpeedVitals blog
