Free Tool

Free PNG to AVIF Converter

Convert PNG to AVIF directly in your browser. No server uploads. No file size limits. No data tracking.

By SEOWebster Team ·

Drop your PNG images here or click to upload

Output: AVIF  ·  Batch upload supported  ·  No file size limit

🔒 No Upload, Local Processing Only
∞ No File Size Limit
✓ 100% Free, No Account Needed
⚡ Instant Batch Convert
✓ No Watermarks Ever

PNG vs AVIF: Technical Comparison

Understanding the key differences helps you choose the right format and conversion approach for every project.

Property P PNG (source) A AVIF (output)
Compression Lossless Lossy & Lossless modes
Colour Depth 16 million (24-bit) 16M colours + HDR
Transparency Full alpha channel Full alpha channel
Software Support Universal, all apps & browsers Chrome, Firefox, Safari 16+, Edge (90%+)
Typical File Size Medium (2–5× larger than JPG) Smallest (20–50% smaller than JPG)
Best Used For Logos, screenshots, design assets, editing Next-gen web performance, large photo libraries

Why Convert PNG to AVIF?

AVIF is the next-generation image format compressing images 50% better than PNG and 20–50% better than WebP with no visible quality loss. Converting PNG to AVIF is the most aggressive web performance optimisation available for images. Chrome, Firefox, and Safari all support AVIF natively.

Top reasons to convert PNG to AVIF:

  • Ensure compatibility with software, platforms, and services that require AVIF format
  • Reduce file size for faster web loading, email sharing, and cloud storage
  • Meet professional, client, or platform submission requirements in AVIF
  • Optimise images for Google PageSpeed, Core Web Vitals, and SEO performance

100% Browser-Based, Your Files Never Leave Your Device

This PNG to AVIF converter uses your browser's native HTML5 Canvas API and FileReader API to process images entirely on your CPU, no server involved. When you click "Convert", your image data is decoded, rendered to an off-screen canvas, and re-encoded to AVIF format, all inside your browser's sandboxed JavaScript environment.

Why we built it this way: Most online converters upload your files to remote servers, store them temporarily, and may expose them to third parties. At SEOWebster, we believe your creative work is private. Our code processes files locally on your machine, we receive zero data, have zero access to your images, and store nothing. Ever.

How to Convert PNG to AVIF Without Losing Quality

No software installation. No account. No upload. Everything runs in your browser in under 30 seconds.

1

Select Your PNG Files

Drag & drop one or more PNG files into the upload area, or click to browse. Batch upload is fully supported, convert unlimited files at once.

2

Output Pre-Set to AVIF

The output format is already set to AVIF, no selection needed. Use the dropdowns above to switch to a different conversion pair if needed.

3

Click Convert, Instantly Local

Hit the Convert button. Processing happens using your CPU via the HTML5 Canvas API. No server, no wait time, no file size limit.

4

Download Your AVIF

Click the download button next to each converted file. Your AVIF saves directly to your device at maximum quality, no watermarks, no limits.

Other Popular PNG Conversions

Convert PNG to other popular formats

PNG → JPG PNG → WEBP PNG → PDF PNG → GIF PNG → ICO PNG → SVG

Other Popular AVIF Conversions

Other converters that output AVIF format

AVIF → PNG AVIF → JPG AVIF → WEBP

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Frequently Asked Questions

Common questions about converting PNG to AVIF

Is AVIF better than PNG?
For web delivery, yes, 50%+ smaller files at equivalent visual quality, with transparency and HDR support. However PNG is better for editing and archiving due to wider desktop software support.
Does AVIF preserve PNG transparency?
Yes. AVIF fully supports alpha channel transparency. Transparent areas in your PNG are preserved when converted to AVIF.
What browsers support AVIF?
AVIF is supported by Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+, covering approximately 90% of active browser users. Serve AVIF with WebP or PNG fallback using the HTML <picture> element for maximum compatibility.
Is there a file size or quantity limit?
No file size limit. Because all processing happens in your browser using the HTML5 Canvas API, there are no server-imposed restrictions. The practical limit is your device's available RAM, most modern devices handle images up to 50–100MB each with no issues. Batch convert as many files as you need in one session.
Are my PNG images secure when converting?
Completely secure. All PNG to AVIF conversion processing happens in your browser using client-side APIs (HTML5 Canvas + FileReader). Your images never leave your device, no file is uploaded to any server, and SEOWebster has zero access to your image content at any point in the process.
Can I convert multiple PNG images to AVIF at once?
Yes. Batch upload is fully supported, drop as many PNG files as you need at once and convert them all in a single click. Each converted AVIF file downloads individually. There is no limit on the number of files you can process in one session.
Does converting PNG to AVIF reduce image quality?
Our converter uses maximum quality (100%) settings for all output formats. For lossless-to-lossless conversions (e.g. PNG → WebP lossless), there is zero quality loss. For conversions involving a lossy format (e.g. anything to JPG or WebP lossy), the compression is set to maximum quality, making any difference invisible to the human eye in normal use. Always keep a backup of your original PNG files for archival purposes.