Image tool

Image to AVIF Converter

Convert PNG, JPG, or WebP images to modern AVIF format for smaller file sizes. Free, private.

IMG AVIF
PrivConvert
Privacy-first conversion
No files stored
In-memory processing
Deleted instantly
No sign-up needed

Complete the security check to begin

Why use AVIF?

AVIF is a next-gen image format that offers up to 50% better compression than JPEG and 20% better than WebP, while maintaining excellent visual quality.

  • Smallest file sizes - dramatically smaller than JPG, PNG, and even WebP
  • Great quality - excellent visual quality at low file sizes
  • Growing support - supported in Chrome, Firefox, Safari, and Edge

How to Convert IMG to AVIF Online

Converting IMG files to AVIF format is simple with PrivConvert. Our free online converter handles the entire process in your browser with no software installation required. Your files are processed securely in memory and never stored on our servers.

1
Upload your IMG file

Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.

2
Automatic conversion

Once uploaded, the conversion from IMG to AVIF starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.

3
Download your AVIF file

Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.

Why Choose PrivConvert?

Unlike other online converters that upload your files to remote servers, store them for days, and may use them for AI training or sell your data, PrivConvert was built with privacy as the foundation. Here's what makes us different:

Zero data retention

Files are processed in volatile memory (RAM) and immediately purged. Nothing is ever written to disk or backed up.

Encrypted transfers

All uploads and downloads are encrypted with TLS 1.3. Your files cannot be intercepted in transit.

No account required

Use any tool instantly without signing up, providing an email, or creating a profile. No tracking cookies, no user profiling.

Works on any device

Compatible with Windows, macOS, Linux, iOS, and Android. No plugins or desktop software needed - just a modern web browser.

IMG vs AVIF - Format Comparison

FeatureIMGAVIF
File extension.img.avif
Supported by PrivConvertYes (as input)Yes (as output)
Privacy-safe conversionIn-memory, zero storage
Max file size250 MB per file
Batch supportUp to 20 files simultaneously

Trusted by Thousands of Users

PrivConvert processes thousands of file conversions every day. Our commitment to privacy and security has made us the go-to choice for professionals, developers, and privacy-conscious users worldwide.

250 MB Max file size
200+ Conversion tools
0 sec File retention
100% Free to use

Frequently Asked Questions

How much smaller are AVIF files?
AVIF images are typically 50% smaller than JPEG and 20% smaller than WebP at equivalent visual quality.
Do all browsers support AVIF?
Chrome, Firefox, Safari, and Edge all support AVIF. Some older browser versions and desktop apps may not.
What is the best quality setting for AVIF?
A quality of 50-65 gives an excellent balance of file size and visual quality. AVIF is very efficient even at lower quality settings.
Does AVIF support transparency?
Yes, AVIF supports full alpha transparency, making it a great replacement for both PNG and JPG.
Is this tool really free?
Yes, completely free with no hidden fees, no watermarks, and no sign-up required. You can convert as many files as you need.
Are my files private and secure?
Absolutely. Every conversion runs in an isolated, in-memory process. Your files never touch the disk, are never stored or shared, and are deleted from memory the moment your download is ready.