JPG to AVIF Converter
Drop a JPG, get an AVIF that's dramatically smaller at the same quality. Runs on your device — no upload.
Drop your JPG file here
Converts to .avif — stays on your device
Why convert JPG to AVIF?
- Shrinking hero images on Next.js, Nuxt, or SvelteKit sites where AVIF is already a first-class output of the Image component.
- Cutting egress bills on Cloudflare, Fastly, or BunnyCDN by serving AVIF to modern browsers with a JPG fallback.
- Hitting Core Web Vitals LCP targets on image-heavy WordPress or Shopify pages without overhauling the stack.
- Optimizing galleries and portfolio sites built with Astro, Hugo, or Eleventy for faster mobile loads.
- Reducing storage and bandwidth on self-hosted photo libraries (PhotoPrism, Immich) where AVIF saves real disk.
- Preparing display assets for digital signage and kiosks running modern Chromium where every MB matters.
How our converter works
Your JPG is decoded and re-encoded as AVIF via the browser's native Canvas API. No WebAssembly download, no server round trip — modern Chromium-based browsers have AVIF encoders built in. Expected size reduction: 30–50% compared to the source JPG, often with visually indistinguishable results. Perfect for marketing teams hitting PageSpeed Insights targets and freelancers delivering assets under performance SLAs.
JPG vs AVIF — what's the difference?
| Feature | JPG | AVIF |
|---|---|---|
| Typical file size | Baseline | 30–50% smaller at matched quality |
| Compression | Lossy only | Lossy or lossless |
| Transparency | No | Yes (full alpha) |
| HDR / 10-bit color | No | Yes |
| Browser support | Universal forever | All modern browsers (2022+) |
Frequently asked questions
How much smaller will my AVIF really be?
For typical photographs, 30–50% smaller than the JPG at the same perceived quality. For simple images with flat colors, the savings can be even larger.
Is there any quality loss going JPG to AVIF?
A small amount, because AVIF re-encodes an already-compressed JPG. At 90% AVIF quality the loss is typically invisible. For best results, encode from the original RAW or PNG if you have it.
Which browsers can my site visitors view AVIF in?
Chrome 85+, Firefox 93+, Safari 16+, and every major browser released since 2022. For older browsers, serve the JPG as a fallback via the <picture> element.
Do email clients support AVIF?
Partial and improving. Apple Mail supports it; Gmail web works; Outlook desktop historically did not. Use JPG for marketing email for now.
Is this AVIF lossless or lossy?
Lossy at 90% quality by default — the sweet spot for web delivery. Lossless AVIF is also smaller than lossless PNG, but larger than lossy AVIF and not usually needed for web images.
Why not use WebP instead?
WebP is the safer default — wider tool support, slightly easier to debug. AVIF is for when you've already squeezed what WebP can give you and need another 20–30% reduction.
About the JPG format
JPG (JPEG) has been the default photo format since 1992 — small, universally supported, and always 'good enough.' AVIF, standardized in 2019 and widely supported by 2022, is the first image format to meaningfully challenge JPG on compression. Using the AV1 video codec, it routinely produces 30–50% smaller files at matched quality, with modern features like transparency and HDR built in. For sites that care about Core Web Vitals or mobile bandwidth, migrating JPG libraries to AVIF (with JPG fallback) is the highest-leverage performance win available.