HEIC (High Efficiency Image Container) is Apple's image format used on iPhones, iPads, and Macs since iOS 11. It uses the HEVC codec to achieve roughly 50% smaller file sizes than JPEG.

Which browsers support AVIF?

AVIF is supported by Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+. As of 2024, over 92% of users have AVIF support.

HEIC to AVIF Converter - Free Online Tool

Drop your HEIC files here

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HEIC HEIF Batch Upload

Max 25MB per file • Up to 10 files

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Conversion Settings

Compression Mode

Quality Level

80%

Smaller file Better quality

Quick:

Encoding Speed

Fast Balanced Quality

Slower encoding typically produces smaller files with better quality.

Resize Options

Resize during conversion

Color Profile

Preserve Original Convert to sRGB

sRGB ensures maximum compatibility across devices and browsers.

About AVIF: AVIF is a next-generation image format offering 50% better compression than JPEG. It supports HDR, wide color gamut, and transparency. Supported by Chrome, Firefox, Safari 16+, and Edge.

How to Convert HEIC to AVIF

Upload your HEIC images by dragging and dropping or clicking the upload area. You can select up to 10 files at once from your iPhone or other Apple devices.

Choose compression mode: Select lossy for maximum compression or lossless for perfect quality preservation.

Adjust quality and speed: Set quality level (for lossy mode), encoding speed preference, and optionally enable resizing.

Convert and download: Click the convert button and download individual files or all as a ZIP archive.

Pro tip: Use our HEIC Analyzer first to check your image properties, or HEIC to JPG converter if you need maximum compatibility with older software.

HEIC vs AVIF Comparison

HEIC

Apple's High Efficiency Image Container format, used on iPhones and iPads since iOS 11. Offers 50% smaller files than JPEG with similar quality. Limited browser support outside Apple ecosystem. Use our HEIC to PNG converter to preserve transparency.

AVIF

Next-generation image format based on AV1 video codec. Achieves 50% better compression than JPEG and 20% better than WebP. Supports HDR, wide color gamut, and transparency. Growing browser support including Chrome, Firefox, and Safari 16+. For even broader compatibility, try PNG to WebP.

Quality Settings Guide

80-100%

High quality with excellent compression. Ideal for photos where quality matters. AVIF excels at preserving fine details and gradients at these settings.

60-79%

Good balance of quality and file size. Perfect for web use, social media, and most general purposes. Minimal visible quality loss.

40-59%

Noticeable compression but still usable quality. Good for thumbnails, previews, or when bandwidth is limited. For more control, try our AVIF compressor.

Below 40%

Heavy compression with visible artifacts. Use only when file size is the top priority. Consider our Image Resizer to reduce dimensions instead.

Why Convert to AVIF?

Superior Compression

AVIF achieves 50% smaller files than JPEG and 20% smaller than WebP at equivalent quality levels.

Excellent Quality

Preserves fine details, gradients, and colors better than older formats. No visible banding or blocking.

HDR & Wide Color

Supports 10-bit and 12-bit color depth, HDR, and wide color gamut for stunning visuals.

Growing Support

Supported by Chrome, Firefox, Safari 16+, Edge, and modern image editors. Future-proof format.

Frequently Asked Questions

HEIC (High Efficiency Image Container) is Apple's image format used on iPhones, iPads, and Macs since iOS 11 and macOS High Sierra. It uses the HEVC (H.265) codec to achieve roughly 50% smaller file sizes than JPEG while maintaining similar quality. If you need broader compatibility, try our HEIC to JPG converter.

AVIF generally offers 20-30% better compression than WebP at equivalent quality levels. It also supports HDR and wide color gamut, which WebP doesn't. However, WebP has broader browser support currently. For maximum compatibility, consider our PNG to WebP converter as an alternative.

AVIF is supported by Chrome 85+, Firefox 93+, Safari 16+ (iOS 16, macOS Ventura), and Edge 121+. As of 2024, over 92% of users have AVIF support. For older browsers, you can provide fallback images using the HTML picture element.

Yes! AVIF fully supports transparency (alpha channel), making it suitable for logos, icons, and graphics. However, HEIC photos from iPhones typically don't have transparency. If you need transparent images, consider converting to PNG format first.

AVIF encoding is computationally intensive due to its advanced compression algorithms. The "Quality" speed setting produces better results but takes longer. For faster conversion, use the "Fast" or "Balanced" speed settings. The trade-off is slightly larger file sizes.

For most photos, 70-85% quality offers an excellent balance of file size and visual quality. AVIF's efficient compression means you can use lower quality settings than you would with JPEG. For archival purposes, use lossless mode or 95%+ quality.

Files are temporarily stored only during the conversion process and are automatically deleted within 24 hours. HEIC decoding happens in your browser when possible for privacy. We don't keep copies of your images and don't use them for any other purpose.