Convert PNG to AVIF: Maximum Compression with Transparency

Which Browsers Display AVIF?

AVIF (AV1 Image File Format) was introduced in 2019 by the Alliance for Open Media, a coalition of Google, Mozilla, Netflix, Apple, Microsoft, and others. Browser adoption took four years to reach broad coverage:

• Chrome 85+ (August 2020): initial support, then stable throughout.
• Firefox 113+ (May 2023): after Mozilla revised its initial 86–112 implementation multiple times.
• Safari 16.4+ (March 2023): initial support on macOS and iOS.
• Edge 121+, Opera 71+: caught up, available everywhere now.

Global reach in early 2026: around 95 percent. The remaining 5 percent are mainly older Android devices on pre-2022 versions and Safari iOS below 16.4. For that audience, the <picture> element with a fallback chain is the clean path:

<picture>
  <source srcset="logo.avif" type="image/avif" />
  <source srcset="logo.webp" type="image/webp" />
  <img src="logo.png" alt="Logo" width="320" height="120" />
</picture>

Modern browsers get AVIF (smallest file), mid-tier browsers get WebP (good reach), legacy gets PNG (universal). The picture element costs no lookup tax, the browser decides at parse time.

When Should I Pick AVIF Over WebP?

Both formats win against PNG. The more interesting question: AVIF or WebP?

Pick AVIF when:

• Hero images dominate Largest Contentful Paint, the additional 20–30% savings over WebP show up in LCP and bandwidth.
• Bandwidth-critical markets, especially mobile-first delivery in emerging markets where every kilobyte counts.
• A <picture> setup is already planned, AVIF is the first source with no risk.
• HDR or 12-bit color depth are required, WebP doesn’t support that.

Stick with WebP when:

• Standard web images without extreme size constraints.
• Server-side encoding speed is critical, AVIF encoding is significantly slower than WebP encoding (you don’t notice this in this tool because it runs in the user’s browser, not on a CDN).
• Legacy devices are in your audience, 97% WebP reach vs 95% AVIF reach.

Does AVIF Keep Transparency?

Yes, fully. AVIF supports a full alpha channel, lossless or lossy, and reproduces transparency with the same accuracy as WebP or PNG. Logos, icons, and cut-out subjects lose no edge detail.

On top of that, AVIF can do what PNG and WebP can’t:

• HDR (High Dynamic Range): real 10- or 12-bit color depth per channel, relevant for Display-P3 content on modern screens.
• Wide color gamut: Display-P3 and Rec. 2020 color spaces are natively supported.
• Chroma subsampling options: 4:4:4, 4:2:2, 4:2:0 selectable, for maximum quality in photography workflows.

These features especially benefit photographer portfolios where color fidelity matters beyond the last 5 percent bandwidth saving.

Is My File Uploaded or Tracked?

Conversion runs entirely in your browser. Your PNG files are never sent to, stored on, or analyzed by a server. No tracking, no cookie banner, no sign-up. After the first load, the tool also works offline, the browser APIs needed have shipped in all current browsers since 2018.

Which Image Tools Are Related?

When your workflow knows other source or target formats:

• Image Format Converter: hub with format comparison and all four format pairs.
• PNG to WebP: when broader browser compatibility matters.
• JPG to AVIF: when your sources are photos, not logos or screenshots.
• Background Remover: ML-based subject extraction as preparation for transparent AVIF export.