Convert PNG to AVIF Online

Up to 50% smaller files — with full transparency preserved, free & instant

100% private — files never leave your device

Drop your PNG files into the converter below, select AVIF output, and click Convert. AVIF is the next-generation format recommended for web delivery in 2025 — up to 50% smaller than PNG with identical transparency support and better compression quality than WebP. No upload, no account, completely free. No sketchy ads, no fake download buttons, no file size limits — just an image converter that works.

png_to_avif.sh
$convert --input
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Drop PNG files here or browse files
PNG • JPG • WebP • AVIF • GIF • BMP • ICO
output
$Conversion complete ✓
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🔒 Privacy first: All conversion happens locally in your browser. Your PNG files are never uploaded to any server. Unlike most converters, nothing is uploaded anywhere.

Your Files Never Leave Your Browser

100% Client-Side Processing

Conversions run locally in your browser using the Canvas API, with Web Workers used when supported. Your image data stays on your device and is never uploaded to any server.

No Account. No Tracking of File Contents.

We use Google Analytics and Google AdSense for aggregated traffic stats and contextual ads when consent allows it. Theme and language preferences stay in your browser. We never see, read, or store the images you convert.

Open About Our Limits

Browser-based conversion has trade-offs: large files (>50 MB) may hit memory limits; animated GIF output flattens to a single frame; EXIF metadata is stripped; ICC color profiles may differ across browsers.

Questions? Contact us or read the full privacy policy .

> how_to_convert

  1. Upload your PNG file
    Drag and drop your PNG image into the converter above, or click "browse files". Multiple files are supported for batch conversion.
  2. AVIF is pre-selected
    The output format is set to AVIF. Adjust the quality slider — 80% delivers significantly smaller files than PNG with minimal visible quality difference.
  3. Download your AVIF
    Click "Convert All", then download files individually or as a ZIP archive.

> png_vs_avif

FeaturePNGAVIF
CompressionLossless onlyLossless + Lossy
Typical file sizeBaselineUp to 50% smaller
Transparency (alpha)✓ Yes✓ Yes
Browser supportAll browsersChrome 85+, Firefox 93+, Safari 16+
HDR / wide color✗ No✓ Yes
Best use caseSource/archiveWeb delivery

> frequently_asked_questions

Why convert PNG to AVIF?
AVIF delivers up to 50% smaller files than PNG at comparable visual quality, with full transparency support. Converting PNG to AVIF for web delivery reduces page weight, improves LCP scores, and cuts bandwidth costs — without losing transparent backgrounds.
Does AVIF preserve PNG transparency?
Yes. AVIF supports full alpha-channel transparency, just like PNG. Transparent backgrounds, logos, and UI elements are preserved after conversion. PNG-to-AVIF is excellent for web graphics — you get the transparency of PNG at a fraction of the file size.
Is this one of those sketchy converters that secretly uploads my files?
No. Everything runs in your browser using the Canvas API — your files never leave your device, not even for a millisecond. There is no server-side processing, no upload queue, no "free tier that uploads anyway". The converter literally cannot access your files once you close the tab.
Do all browsers support AVIF images?
AVIF is supported by Chrome (85+), Firefox (93+), and Safari (16+) — approximately 90% of global browser usage in 2025. For maximum compatibility, use the <picture> element with AVIF as the primary source and WebP or PNG as a fallback for older browsers.
What quality setting should I use for PNG to AVIF?
80% quality is a good starting point — it produces significantly smaller files than PNG with minimal visible quality difference. For sharp-edged graphics and text, use 85–90%. For photos where maximum compression matters, 70–75% is still visually clean. AVIF quality per byte is higher than JPG, so lower settings remain acceptable.