Priconvert

PNG to AVIF

PNG to AVIF converter that preserves transparency

Shrink transparent PNGs into efficient AVIF files without uploading them. Priconvert keeps alpha, encodes with a local WASM AVIF codec, and supports quality, resize, and Pro batch ZIP — all on your device.

This page is a focused entry point into the same privacy-first converter on Priconvert — processed locally in your browser, with no uploads for conversion. Pro users can batch convert, resize, compress, and download ZIP files from the converter.

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Convert PNG to AVIF
Single mode is free — upload a PNG, preview the AVIF, adjust quality, and download. Pro batch mode cleans multiple files into a ZIP. The AVIF encoder loads once per session when needed.
Loading usage…Local processing

Conversion mode

Single is free for quick one-off jobs. Batch converts many images to a ZIP — Pro workflow, processed locally in your browser.

Preparing the AVIF encoder (one-time load for this session)…

Drop your image here

Drag and drop on desktop, or tap below to choose a file from your phone or computer.

Supports png

About this converter

What does this PNG to AVIF converter do?

PNG to AVIF conversion takes a lossless PNG (often with transparency) and produces a much smaller AVIF while keeping alpha. That makes it a strong option for UI assets and product images on sites that already serve AVIF with fallbacks.

Encoding uses a dedicated AvifImageAdapter and @jsquash/avif WASM — not canvas.toBlob("image/avif"), which is unreliable across browsers. Decode of your PNG uses the existing canvas adapter; only AVIF encode/decode needs the AVIF adapter.

Transparency, compression, and limitations

Input: .png with or without alpha. Output: .avif with transparency preserved when present. Quality controls and resize are available. Animated sources are not part of this PNG path.

AVIF advantages versus PNG: dramatically smaller files for many graphics at acceptable quality. Disadvantages: lossy by default in this tool (quality slider), slower first encode while WASM loads, and weaker support in older editors. Keep a PNG master if you need lossless editing later.

Browser compatibility: current major browsers can display AVIF. If encoding cannot start, Priconvert disables AVIF output with a clear message rather than failing silently.

How it works

How PNG to AVIF conversion works

Shared pipeline: canvas PNG decode, then WASM AVIF encode with session caching.

  1. 1

    Upload a PNG

    Drop a .png file. Transparent pixels stay available for AVIF output.

  2. 2

    Load the AVIF encoder

    The first AVIF export in a session loads WASM once and caches it for later conversions.

  3. 3

    Adjust and preview

    Set quality and optional resize, then compare original and converted previews.

  4. 4

    Download or batch ZIP

    Save a single .avif, or use Pro batch mode for multiple files in one ZIP.

Privacy

Private PNG → AVIF on your device

No upload for conversion. Your graphics stay in the browser.

  • PNG decode and AVIF encode run locally.
  • WASM is codec code, not your image content.
  • Pro batch ZIP is assembled in the browser before download.

FAQ

PNG to AVIF questions

Transparency, quality, and encoding questions for PNG → AVIF.

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