JPG to AVIF: Dramatically Reduce Photo File Sizes
AVIF vs JPEG: The Next Generation Format
JPEG has been the dominant format for photographic images since 1992. It introduced lossy compression that made sharing photos over early internet feasible. For decades JPEG was the best available option. However, JPEG compression technology is now over 30 years old and modern alternatives offer dramatically better efficiency at the same visual quality. AVIF (AV1 Image File Format), developed by the Alliance for Open Media in 2019, achieves 40 to 50 percent smaller file sizes than JPEG at the same visual quality.
What Is AVIF?
AVIF stands for AV1 Image File Format, created by the Alliance for Open Media whose members include Google, Apple, Microsoft, Mozilla, Amazon, Netflix, and Intel. AVIF uses the AV1 video codec developed for high-efficiency video streaming to compress still images. The result consistently outperforms all older formats in file size at equivalent visual quality. AVIF supports both lossy and lossless compression, transparency (alpha channel), HDR content, wide color gamuts, and high bit depth.
What Is JPG?
JPG (JPEG) is a lossy image format standardized in 1992. It uses Discrete Cosine Transform to reduce file size by discarding visual information that human eyes are less sensitive to. JPEG is universally supported across all devices, operating systems, software, and browsers, making it the default format for digital cameras and smartphones. JPEG limitations include visible compression artifacts at lower quality settings and overall compression efficiency that has been surpassed by newer formats.
Web Performance Benefits
For e-commerce sites, blogs, and image-heavy websites, switching from JPEG to AVIF can significantly improve performance. A typical product gallery with 20 JPEG images at 200 KB each totals 4 MB. As AVIF, the same images might average 100 to 120 KB each, totaling 2 to 2.4 MB. This 50 percent payload reduction improves Largest Contentful Paint, reduces bounce rates, and can improve search engine rankings since Google uses page speed as a ranking signal.
Use Cases for JPG to AVIF Conversion
Product photography benefits enormously as AVIF preserves fine details while reducing file sizes significantly. Editorial and blog photography can reduce article page weight without any visible quality loss. Background and hero images, which are often the largest elements on a page, compress particularly well in AVIF, dramatically improving Largest Contentful Paint scores. Social media content creators benefit from faster uploads and better quality preservation at smaller sizes.
AVIF Browser Support
As of 2024, AVIF is supported in Chrome 85 and later, Firefox 93 and later, Safari 16.4 and later, and Edge 121 and later, representing over 93 percent of global web traffic. For remaining users on older browsers, the HTML picture element lets you specify AVIF as the primary source with JPEG as fallback, ensuring universal compatibility without maintaining two separate image sets in your code.
How to Use This Converter
- Select your JPEG file — click the upload area or drag and drop your JPG or JPEG file.
- Preview — your image is displayed so you can confirm the correct file is selected.
- Click Convert to AVIF — runs instantly in your browser using built-in codecs, no server needed.
- Download — save your AVIF file with the .avif extension ready for web deployment.
About This Tool
This JPG to AVIF converter runs entirely inside your web browser. No image data is ever sent to a server. Your photos remain completely private on your device. Free to use, no registration, no watermarks on converted files, no limits on the number of images you can convert.