Convert HEIC to AVIF Online
Patent-encumbered (HEVC/H.265 licensing) and requires special codecs on Windows and older Android devices. Converting to AVIF gives you a key advantage: achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support. AVIF is best for next-generation web images with the highest compression efficiency available today.
Why Convert HEIC to AVIF?
Patent-encumbered (HEVC/H.265 licensing) and requires special codecs on Windows and older Android devices — converting to AVIF overcomes this by providing achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support
AVIF is the right choice when you need to: serving ultra-compressed hero images on modern websites for fastest load times
Gain broader compatibility — AVIF works with Chrome 85+, Firefox 93+, Safari 16.4+, Edge 85+; limited in older image editors
Your HEIC files were created for sharing apple live photos that store still + video in one container, but now you need a format suited to different workflows
HEIC vs AVIF — Format Comparison
High Efficiency Image Container (.heic)
AV1 Image File Format (.avif)
How to Convert HEIC to AVIF
Upload your HEIC file
Drag your .heic file onto the upload area or click to browse. We accept HEIC files up to 50 MB.
Choose AVIF as output format
Select .avif (AV1 Image File Format) from the format list. Configure any format-specific settings to match your requirements.
Convert and download
Click Convert and wait for processing. Your AVIF file will be ready to download in seconds. The result is optimized for next-generation web images with the highest compression efficiency available today.
Frequently Asked Questions
Is the HEIC to AVIF conversion lossless?
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When both formats support lossless data, the conversion preserves all content. 10/12-bit HDR, wide color gamut (BT.2100), alpha transparency, and animation — all in one format.
How large will my AVIF file be compared to the original HEIC?
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HEIC files are typically 1 MB – 8 MB, while AVIF files are typically 5 KB – 8 MB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted AVIF file?
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AVIF is compatible with: Chrome 85+, Firefox 93+, Safari 16.4+, Edge 85+; limited in older image editors.
What is the maximum file size I can convert?
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PureConverter accepts HEIC files up to 50 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between HEIC and AVIF?
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HEIC (High Efficiency Image Container) is best for storing iphone and ipad photos at half the file size of jpeg with no visible quality loss. AVIF (AV1 Image File Format) is best for next-generation web images with the highest compression efficiency available today. Key tradeoff: HEIC's advantage is roughly 50% smaller than jpeg at the same quality, with support for 10-bit hdr, depth maps, and burst sequences, while AVIF's advantage is achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support.
Pro Tips for HEIC to AVIF Conversion
Review the output AVIF file to ensure all formatting and content transferred correctly from your HEIC source
If your HEIC file has transparency, make sure AVIF supports it — AVIF supports transparency
AVIF works especially well for: replacing webp where even smaller file sizes are critical for mobile users
Did you know? AVIF is based on the AV1 video codec, which was designed by a consortium specifically to be royalty-free — Netflix, YouTube, and Twitch backed it to avoid paying HEVC license fees.
Ready to Convert?
Upload your HEIC file above and get your AVIF in seconds. Free, fast, and secure.