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HomeAVIF vs HEIF
.avif
.heif

AVIF vs HEIF

Compare AV1 Image File Format and High Efficiency Image Format formats — understand the key differences and when to use each

Format Overview

AVIF

AV1 Image File Format

AVIF (AV1 Image File Format) is a next-generation image format based on the AV1 video codec. AVIF provides approximately 50% better compression than JPEG and 20% better than WebP at equivalent quality. It supports HDR, wide color gamut, transparency, animation, and lossless compression. AVIF is supported by Chrome, Firefox, Safari, and Edge. While encoding is slower than JPEG or WebP, AVIF produces the smallest file sizes with excellent quality, making it ideal for web performance optimization.

.avifimage

HEIF

High Efficiency Image Format

High Efficiency Image Format (.heif) is a image file format.

.heifimage

AVIF vs HEIF: Feature Comparison

FeatureAVIFHEIF
Full NameAV1 Image File FormatHigh Efficiency Image Format
File Extension.avif.heif
Categoryimageimage
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use AVIF vs HEIF

Use AVIF when you need:

  • •Files in AV1 Image File Format format for maximum compatibility
  • •Industry-standard image format support
  • •Wide software and platform compatibility

Use HEIF when you need:

  • •Files in High Efficiency Image Format format for specific workflows
  • •Optimized image format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

AVIF HEIFHEIF AVIF
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Frequently Asked Questions

What is the difference between AVIF and HEIF?
AVIF (AV1 Image File Format) and HEIF (High Efficiency Image Format) are both image file formats. AVIF files use the .avif extension while HEIF uses .heif. They differ in compression, quality, compatibility, and intended use cases.
Can I convert AVIF to HEIF for free?
Yes! Convert999 lets you convert AVIF to HEIF completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, AVIF or HEIF?
It depends on your use case. AVIF (AV1 Image File Format) may be better for certain workflows, while HEIF (High Efficiency Image Format) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

AVIF Converter

Convert from AVIF

HEIF Converter

Convert from HEIF

File Tools

Compress, resize, merge

Convert to AVIF

All sources → AVIF

Convert to HEIF

All sources → HEIF

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG