Are my images uploaded to a server?

No. The entire conversion runs inside your browser using the HTML5 Canvas API and your browser's built-in AVIF encoder. Your image never leaves your device.

Does AVIF support transparency?

Yes. Unlike JPG, AVIF fully supports an alpha channel, so transparent areas in your PNG are preserved in the output AVIF file.

Which browsers support AVIF encoding?

Chrome 94+, Edge 94+, and Firefox 113+ support AVIF encoding via the Canvas API. Safari currently supports AVIF display but not Canvas-based AVIF encoding. If the tool shows an error, try Chrome or Edge.

What quality setting should I use?

Quality 70–80 is an excellent sweet spot for most images — visually near-lossless at significantly smaller file sizes than PNG or WebP. For text-heavy images or line art, use 85+. For thumbnails, 50–65 is acceptable.

Why is AVIF sometimes larger than PNG?

PNGs with very simple flat-color graphics compress well with lossless encoding. For such images, lossy AVIF at high quality can occasionally be larger. Try lowering the quality slider for better compression on photographic content.

Is there a file size limit?

The limit is your browser's available memory, typically several hundred megabytes. Very large images (over 20 MP) may be slow to encode on low-end devices because AVIF is a computationally intensive codec.

PNG to AVIF Converter

Upload a PNG, adjust the quality slider, and download the AVIF — all processed locally in your browser, nothing sent to a server.

Upload PNG

Click or drag a PNG here

PNG files only

AVIF Quality

1 — smallest 100 — best

Preview (AVIF output)

Upload a PNG to see the preview

Adjust quality to compare sizes in real time

Downloaded!

Summary

This tool converts PNG images to AVIF format entirely inside your browser using the HTML5 Canvas API. No files are ever uploaded to any server — all processing happens on your device. AVIF typically delivers 40–60% smaller files than PNG at equivalent visual quality and supports full transparency and HDR. Use the quality slider to balance image clarity against file size and see a live size comparison before downloading.

How it works

Select or drag a PNG image onto the upload area.
Adjust the AVIF quality slider (1–100) to your preference.
The preview and file size comparison update instantly.
Review the before/after file size comparison panel.
Click "Download AVIF" to save the converted image.

Use cases

Shrink large PNG screenshots for faster web page loads.
Convert product images to AVIF for maximum e-commerce performance.
Reduce image weight without losing transparency support.
Prepare design exports from Figma or Sketch for modern browsers.
Compress photos and illustrations to AVIF for Core Web Vitals gains.
Preview different quality levels before final export.
Process images privately without uploading to a third-party service.
Optimize hero images and banners with the most efficient codec available.

Frequently Asked Questions

Last updated: 2026-05-28 · Reviewed by Nham Vu