JPG to AVIF Converter

How to Convert JPG to AVIF

JPG has served as the web's default image format for over 30 years, but AVIF represents the next generation of image compression. Developed by the Alliance for Open Media (which includes Google, Apple, Mozilla, and Netflix), AVIF delivers dramatically smaller files without sacrificing visual quality. Converting your JPG images to AVIF is one of the most impactful optimizations you can make for web performance.

Benefits of the AVIF Format

The primary advantage of AVIF is its superior compression efficiency. Studies consistently show that AVIF achieves 30 to 50 percent smaller file sizes compared to JPG at the same perceived quality. For a website serving thousands of images, this translates directly into faster load times, lower hosting costs, and improved Core Web Vitals scores, all of which contribute to better search engine rankings.

Beyond compression, AVIF supports features that JPG simply cannot offer. These include an alpha channel for transparency, 10-bit and 12-bit color depth for HDR content, wide color gamut support via the BT.2020 color space, and both lossy and lossless compression modes. This makes AVIF versatile enough to replace not just JPG but also PNG and WebP in many scenarios.

Compression and Quality Settings

When converting JPG to AVIF, the quality slider controls the balance between file size and visual fidelity. A quality setting of 60 to 75 typically produces files that are visually indistinguishable from the original JPG while being significantly smaller. For archival purposes or when maximum quality is essential, use a setting of 80 to 90. Going above 90 yields diminishing returns as file sizes increase substantially with minimal visual improvement.

The converter processes your images entirely in the browser, using the Canvas API and your device's built-in AVIF encoding capabilities. This ensures your images remain private and the conversion is fast, with no dependency on external servers or network speed.

Browser Support and Fallback Strategies

Modern browser support for AVIF is now excellent. Chrome added AVIF support in version 85, Firefox in version 93, and Safari in version 16. Together, these browsers cover the vast majority of internet users. For the best cross-browser experience, web developers often use the HTML picture element to serve AVIF to supported browsers while providing a JPG fallback for older ones. This approach ensures every visitor sees your images while those on modern browsers benefit from the smaller file sizes.

Whether you are optimizing an existing website, building a new project, or simply want smaller image files for storage, converting JPG to AVIF is a straightforward process that delivers measurable benefits.