HEIC to AVIF Converter
Convert HEIC images to AVIF online for free. Use this exact converter when you need iPhone or iPad photos in a format that works better outside Apple-first workflows.
Converting HEIC to AVIF re-encodes the image into the AVIF container while preserving resolution and color information. The trade-off depends on the target format: lossy targets (JPG, WebP) shrink file size; lossless targets (PNG, TIFF) preserve every pixel exactly.
Max file size 50MB. Sign up for more.
| File Name | Size | Convert To |
|---|
Checking files and selected output formats.
| File Name | File Size | Download |
|---|
Switch HEIC Images to AVIF in 3 Steps
Change image format for better compatibility, smaller files, transparency support, or a more web-friendly delivery format.
Drag and drop your HEIC files or click to browse. Supports photos, screenshots, graphics, and images with transparency. Batch upload multiple files for bulk conversion.
Our engine converts your HEIC to AVIF while preserving the original resolution and DPI. Alpha transparency and embedded colour profiles (sRGB, Adobe RGB) are retained where the target format supports them.
Download your converted AVIF images individually or as a ZIP archive. Image quality is maintained at the original resolution — no downscaling or watermarks applied.
Why Convert HEIC to AVIF
AVIF achieves up to 50% smaller files than WebP and 70% smaller than JPG at equivalent quality. It is the most efficient image format currently available for photographic content.
AVIF supports 10-bit and 12-bit color depths with HDR metadata, enabling vibrant, true-to-life images on HDR displays. Wide color gamut coverage exceeds sRGB for richer, more accurate colors.
Chrome, Firefox, Safari, and Edge all support AVIF images. Adoption is accelerating rapidly, and AVIF is becoming the preferred next-generation image format for the modern web.
AVIF includes a dedicated film grain synthesis tool that preserves the natural texture of photographs at a fraction of the file size. Grainy low-light photos maintain their character after compression.
AVIF supports alpha transparency and animated image sequences, combining the best features of PNG, GIF, and JPG into one format with dramatically better compression efficiency.
HEIC vs AVIF: Side-by-side
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | HEIC | AVIF |
|---|---|---|
| Full name | High Efficiency Image Container | AV1 Image File Format |
| Year introduced | 2017 | 2019 |
| Developer / standard body | MPEG / Apple | Alliance for Open Media |
| MIME type | image/heic | image/avif |
| File extension | .heic / .heif | .avif |
| Compression | Lossy (HEVC) | Lossy or lossless (AV1) |
| Color / data depth | 8/10-bit | 8/10/12-bit |
| Max dimensions / size | 8,192 × 4,320 px | 65,536 × 65,536 px |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Standard / specification | ISO/IEC 23008-12 | AOMedia AV1 |
| Best for | iPhone photo storage (50% smaller than JPG at equivalent quality) | Next-gen web images — 50% smaller than JPG, 20% smaller than WebP |
About the HEIC Format
HEIC (High Efficiency Image Container) is a modern image format that Apple adopted as the default photo format starting with iOS 11 in 2017. It uses H.265/HEVC (High Efficiency Video Coding) compression to achieve dramatically smaller file sizes — typically 40-50% smaller than JPEG at equivalent visual quality. This efficiency allows smartphones to store significantly more photos without sacrificing the detail and colour accuracy users expect.
HEIC is primarily used within the Apple ecosystem for photos captured on iPhones and iPads. It supports advanced features including 10-bit colour depth, HDR imaging, and the ability to store multiple images (such as Live Photos or burst sequences) within a single file. The main drawback is limited compatibility outside of Apple devices — Windows requires an extension to view HEIC files, web browsers generally do not support it, and many image editors lack native HEIC support, making conversion to JPEG or PNG often necessary for sharing.
HEIC to AVIF FAQ
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert HEIC files to AVIF.
How do I convert HEIC to AVIF online?
Why would I convert HEIC to AVIF?
Can I convert HEIC to AVIF without losing too much quality?
Will converting HEIC to AVIF change transparency?
Can I convert iPhone photos from HEIC to AVIF online?
Will converting HEIC to AVIF make the file size smaller?
Can I batch convert multiple HEIC files to AVIF at once?
Is it safe to convert HEIC to AVIF online?
Guides and Fixes for HEIC to AVIF Converter
Read image-format guides, transparency tips, compatibility fixes, and file-size advice related to HEIC to AVIF Converter.
Image File Formats Explained: The Ultimate Conversion Guide
The definitive guide to image file formats — covering JPG, PNG, WebP, AVIF, HEIC, TIFF, SVG, BMP, GIF, and ICO. Compare compression, quality, use cases, and learn when to use each format for web, print, and photography.
Windows Can't Open HEIC Files? Here's the Fastest Fix
Windows can't open HEIC files? The fix takes under a minute. Install the free HEIF codec or use the online converter — no paid software needed.
Image Won't Upload? How to Fix Every Common Size and Format Error
Image won't upload? File size or format errors explained. Quick fixes for 'file too large', 'unsupported format', and resolution rejections.
HEIC Explained — Why Your iPhone Uses It and What to Do About It
What is HEIC? Apple's photo format explained — why iPhones use it, why it causes compatibility problems, and how to convert or open HEIC files.
Best Compression Format for Large File Storage in 2026
When storage space matters, choosing the right compression format makes a real difference. This guide compares ZIP, 7Z, RAR, TAR.GZ, and ZSTD for large file storage — covering compression ratios, speed, and compatibility.
File Compression Explained: ZIP, RAR, 7Z and More
The complete guide to file compression formats — ZIP, RAR, 7Z, TAR, GZIP, and ZSTD. Compare compression ratios, speed, compatibility, and learn which format works best for archiving, sharing, email, and long-term storage.