Compress to AVIF Online — Free, Fast & Private
AVIF (AV1 Image File Format) is the newest image format on the web, developed by the Alliance for Open Media. It consistently produces smaller files than WebP and JPEG at equivalent visual quality — typically 30-50% smaller than WebP and 50-70% smaller than JPEG. Major browsers including Chrome, Edge, Firefox, and Samsung Internet all support AVIF natively.
MiniPx uses your browser's built-in AVIF encoder via the Canvas API to convert any image (JPEG, PNG, WebP, HEIC, GIF, BMP, TIFF) directly to AVIF format. The entire process happens on your device — no files are uploaded to any server, making it the most private AVIF converter available.
For web developers and content creators, AVIF is the optimal choice for hero images, product photos, and any visual content where file size directly impacts page load speed. Google's Lighthouse specifically recommends AVIF as a next-gen format for improving Core Web Vitals scores.
Why AVIF produces smaller files
AVIF is based on the AV1 video codec — a technology designed by engineers from Google, Apple, Netflix, and Mozilla to deliver maximum compression efficiency. Unlike JPEG (which dates from 1992) or WebP (based on VP8 from 2010), AV1 uses modern prediction techniques, larger transform blocks, and film grain synthesis to achieve significantly better compression ratios.
In practical terms: a 2 MB JPEG photo typically becomes 800 KB as WebP but only 400-500 KB as AVIF — with identical visual quality. For websites serving thousands of images, this translates to measurably faster page loads, lower CDN bandwidth costs, and better search rankings through improved Core Web Vitals.
AVIF browser support in 2026
As of 2026, AVIF is supported by all major browsers: Chrome 85+, Edge 85+, Firefox 93+, Opera 76+, and Samsung Internet 14+. Safari added full AVIF support in version 16 (iOS 16 and macOS Ventura). This means over 95% of web users can view AVIF images natively — making it production-ready for most websites.
For the small percentage of users on older browsers, serve AVIF with a JPEG or WebP fallback using the HTML <picture> element. MiniPx can produce both formats in one session — compress to AVIF for modern browsers, then compress the same images to WebP or JPEG as a fallback.
AVIF vs WebP vs JPEG — when to use each
Use AVIF when maximum compression matters and your audience uses modern browsers — hero images, product galleries, blog featured images. Use WebP when you need wide compatibility including older iOS devices. Use JPEG when you need universal support (email attachments, legacy systems, print workflows). MiniPx lets you switch between all three formats with one click to compare output sizes for your specific images.