PNG to AVIF Converter

Convert PNG images to AVIF — the most efficient image format available. Typically 50% smaller than JPEG at the same quality. Quality slider, batch mode.

Drop PNG files here

or click to select · up to 20 files · max 50 MB each

png

Files never leave your device — processed locally in your browser

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What it does

Best-in-class compression

AVIF typically achieves 50% smaller files than JPEG and 30% smaller than WebP at the same perceptual quality level.

Transparency preserved

AVIF supports full alpha transparency, so PNG images with transparent backgrounds convert without any fill needed.

Quality control

Slider from 1–100. Default 80 gives excellent quality with maximum compression. Use 90+ for professional use.

Batch processing

Convert up to 20 PNGs at once and download all AVIFs as a ZIP.

How to use PNG to AVIF Converter

  1. 1
    Upload PNG files

    Drag and drop PNG files onto the drop zone or click to browse.

  2. 2
    Set quality

    Adjust the quality slider. Default 80 is recommended for web use. AVIF achieves higher quality at lower slider values than JPEG.

  3. 3
    Convert and download

    Click "Convert to AVIF" and download your optimized AVIF files.

When to use this

Next-generation web images

Replace PNG images on your website with AVIF to serve the smallest possible files to modern browsers (Chrome, Firefox, Safari 16+).

Maximum compression for image libraries

Convert PNG photo archives to AVIF to dramatically reduce storage costs while preserving visual quality.

HDR and wide color gamut

AVIF supports 10-bit and 12-bit color. Convert PNG HDR captures to AVIF to preserve the extended color range.

Common errors & fixes

AVIF encode not supported
AVIF encoding requires Chrome 85+ or Edge 121+. Firefox and Safari currently support AVIF decode but not encode via Canvas. In unsupported browsers, the converter falls back to WebP.
Output file is larger than PNG
Very small images (<100×100 px) may produce larger AVIF files due to encoding overhead. For icons and small graphics, PNG or WebP is more efficient.

Technical details

Input formatPNG (any depth, with or without alpha)
Output formatAVIF (AV1 Image File Format)
Encoding methodCanvas.toBlob("image/avif", quality)
Browser support for encodingChrome 85+, Edge 121+ (Firefox/Safari: WebP fallback)
Transparency supportYes — PNG alpha preserved in AVIF
Processing locationBrowser (client-side only)

What is AVIF?

AVIF (AV1 Image File Format) is the newest broadly supported image format, standardized in 2019 by the Alliance for Open Media. It is derived from keyframes of the AV1 video codec, which uses dramatically more sophisticated compression than older formats.

AVIF achieves roughly 50% smaller files than JPEG and 20–30% smaller than WebP at the same perceived quality. It supports HDR, wide color gamut (up to 12-bit depth), alpha transparency, and both lossy and lossless modes. The main trade-off: AVIF encoding is slower than WebP, making it best suited for batch pre-processing rather than real-time generation.

PNG vs AVIF: The web performance trade-off

PNG is lossless and universally compatible — but large. AVIF is lossy (typically), extremely compact, and supported by all modern browsers.

For a website image, the size difference is dramatic. A 500 KB PNG logo might compress to 80 KB as AVIF at quality 80 — a 6× reduction. For a photo-heavy homepage with 10 images, switching from PNG to AVIF can reduce total image payload from 5 MB to under 1 MB.

The practical recommendation: keep PNG as your master/editing format, deliver AVIF (with WebP and PNG fallbacks via <picture>) to web users.

AVIF browser support in 2026

AVIF is supported by all major modern browsers: Chrome 85+ (2020), Firefox 93+ (2021), Edge 121+ (2024), and Safari 16+ (2022). Combined, these cover approximately 90% of global browser usage.

For the remaining users, serve WebP as the <source type="image/webp"> fallback and PNG/JPEG as the final <img> fallback. This three-tier approach ensures optimal compression for modern browsers while maintaining compatibility.

Frequently Asked Questions

What is an AVIF file?

AVIF is a modern image format based on the AV1 video codec. It achieves up to 50% smaller files than JPEG and 20–30% smaller than WebP at the same visual quality. It supports HDR, transparency, and wide color gamut.

How do I convert PNG to AVIF?

Drop your PNG files onto the upload zone, set quality (default 80 works for most web images), and click "Convert to AVIF".

Is this PNG to AVIF converter free?

Yes, completely free.

Does the converter upload my files?

No — conversion happens locally in your browser.

Can I batch convert PNG to AVIF?

Yes, up to 20 files at once.

Is there quality loss?

In the default lossy mode, very minor compression artifacts at quality below 90. At quality 85, most viewers cannot distinguish AVIF from lossless PNG.

Does AVIF support transparency?

Yes. AVIF supports full alpha transparency, so PNG transparent backgrounds convert correctly.

What browsers support AVIF?

Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+ all support AVIF viewing. For encoding (this converter), Chrome 85+ and Edge 121+ are required.

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