PNG to AVIF Converter — Half the Size, Full Transparency
Convert PNG to AVIF online. AV1-based codec delivers roughly 50% smaller files than PNG with transparency intact — the smallest files you can ship to modern browsers.
Drag & drop a file here, or click to select
Max file size: 100 MB
Why convert PNG to AVIF?
AVIF is the image sibling of the AV1 video codec, and it delivers the best compression ratio of any widely-supported still-image format today. For PNG input, AVIF typically produces files around 50% smaller than the PNG source while retaining transparency and 10-bit color depth support. The trade-off is encode time — producing an AVIF takes noticeably longer than a WebP or JPG, because the AV1 codec does more work per pixel. For one-time conversions or build-time pipelines that cost is invisible to end users, and the bandwidth savings pay off on every subsequent page load. Every current browser engine (Chromium 85+, Firefox 93+, Safari 16.1+) decodes AVIF natively.
Best-in-class compression
AVIF uses the AV1 codec's intra-frame compression, which consistently outperforms JPG, WebP, and PNG on photographic and UI content alike. Expect ~50% size reduction from PNG for typical sources.
Transparency and wide gamut
Unlike JPG, AVIF carries a full alpha channel and supports up to 12-bit color depth. Gradients, HDR content, and wide-gamut material survive better than they would in a JPG.
Modern browser coverage
AVIF is natively supported in Chrome/Edge (85+), Firefox (93+), and Safari 16.1+ (iOS 16.4+). That's roughly 95% of global browser traffic as of 2025 — solid enough to ship as the primary asset with a WebP or PNG fallback.
When AVIF beats PNG or WebP
AVIF is the strongest choice when page-load performance is the dominant concern.
Hero images and above-the-fold content where every KB affects LCP.
Product photography and marketing imagery on performance-sensitive sites.
CDN-backed asset pipelines with modern build tooling (Next.js, Astro, Cloudflare Images).
Replacing legacy PNG assets where the bandwidth savings outweigh broader browser coverage.
Our secure conversion process
We show you exactly what happens when you convert, so you know where data goes and what stays untouched.
Upload a PNG
Drop your PNG above. AVIF encoding takes a few seconds longer than WebP or JPG — that's AV1 doing its work.
Choose AVIF
AVIF is preselected; click Convert. Sharp defaults to a balanced quality level that matches typical web use.
Download your AVIF
Download in-browser. Plug the AVIF into a <picture> element with a WebP fallback for older Safari clients.
Want to try it out? Upload your file above, no signup required.
What you get
Every conversion here runs on a temporary copy, delivers a ready download, and clears out quickly after you’re done.
- Roughly 50% smaller than the PNG source for most photographic content.
- Transparency preserved 1:1 — AVIF's alpha channel is a direct replacement for PNG's.
- AV1-based codec handles gradients and large flat areas better than JPG's DCT.
- Conversion runs on a temporary copy that we delete right after processing.
Frequently asked questions
How much smaller will the AVIF be than the PNG?
For photographic content, expect roughly 50% size reduction at visually equivalent quality. For screenshots or UI exports with large flat regions, savings can be even more aggressive (60-80%). Very simple images that already compress tightly in PNG may see smaller relative wins.
Why does encoding take longer?
The AV1 codec does significantly more analysis per pixel than JPG or WebP — that's what drives the better compression ratio. Encode time for typical web images is a few seconds, which is fine for one-off conversions or build pipelines but noticeable compared to WebP.
What browsers support AVIF?
Native support: Chrome and Edge (85+), Firefox (93+), Safari (16.1+ on macOS Ventura, iOS 16.4+). That's ~95% of traffic globally. Samsung Internet and UC Browser lag; if they're a significant audience, pair the AVIF with a WebP fallback via <picture>.
Does transparency survive the conversion?
Yes. AVIF supports an alpha channel natively, so transparent PNG regions (including partial-transparency anti-aliased edges) carry over without flattening.
Is AVIF worth it over WebP?
Usually yes — AVIF is typically 20% smaller than WebP at matched quality, and browser support has closed most of the gap. The main reason to stay on WebP is if your audience includes meaningful Samsung Internet or older-Safari traffic and you don't want to manage two formats.
Related conversions
Other common conversions people run alongside this one.