HEIC to AVIF Converter
Convert your HEIC files to AVIF format free, right in your browser — no uploads, no signup, no watermarks. Files never leave your device.
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Quick Answer: How to Convert HEIC to AVIF
HEIC is Apple's High Efficiency Image Container (HEVC/HEIF) — the default iPhone photo format. AVIF is AV1-based image format — the newest mainstream compression champion. Converting between them re-encodes the media with AVIF's compression model, so output quality depends on the settings you pick in the converter. Run it free at practicalwebtools.com/convert/image/heic-to-avif: drop in your HEIC, adjust settings if you like, and download the AVIF — no signup, no upload, everything stays on your device.
How to Convert HEIC to AVIF Online
- 1
Add your HEIC file
Drag and drop it into the converter, or click to browse. HEIC files up to the size limit are accepted, and nothing is uploaded — processing runs locally in your browser.
- 2
Set AVIF options
Pick your quality: the converter exposes the settings that matter for AVIF. Higher bitrates preserve more of the HEIC's detail at larger file sizes.
- 3
Download the AVIF
Conversion runs on your device. When it completes, download the AVIF file — repeat for as many files as you need, free and unlimited.
Key Facts About HEIC to AVIF Conversion
- HEIC: MPEG HEIF standard 2015; Apple adopted it in iOS 11 (2017), lossy HEVC — roughly 50% smaller than JPEG at equal quality.
- AVIF: AOMedia (Google, Netflix, Apple, etc.), 2019, lossy and lossless — roughly 50% smaller than JPEG at equal quality.
- HEIC strength: halves iPhone photo storage.
- AVIF strength: dramatically smaller than JPEG/WebP.
- HEIC limitation to know: Windows needs an extension; older software doesn't know it.
- AVIF limitation to know: encoding is slow (AV1 complexity).
HEIC vs AVIF: Format Comparison
What is HEIC?
HEIC is the default image format on modern iPhones and iPads. It offers better compression than JPEG while maintaining similar quality.
- File extension: .heic, .heif
- Developed by: MPEG (Moving Picture Experts Group)
- Best for: iOS photos, efficient storage on Apple devices
What is AVIF?
AVIF is a modern image format based on the AV1 video codec. It offers significantly better compression than JPEG and WebP while maintaining high quality.
- File extension: .avif
- Developed by: Alliance for Open Media
- Best for: Next-generation web images, small file sizes
Why Convert HEIC to AVIF?
- AVIF is perfect for next-generation web images, small file sizes
- Web browsers load AVIF images faster
- AVIF supports features HEIC doesn't (transparency, animation)
- Converting to AVIF reduces file size for web use
- AVIF is required by specific applications or platforms
Frequently Asked Questions
Will converting HEIC to AVIF lose quality?
It depends on the formats: HEIC is lossy HEVC — roughly 50% smaller than JPEG at equal quality and AVIF is lossy and lossless — roughly 50% smaller than JPEG at equal quality. Any step from a lossless source into AVIF keeps everything; any lossy step re-encodes and discards some data.
Are my files uploaded anywhere during HEIC → AVIF conversion?
No. This converter runs on WebAssembly inside your browser — your HEIC file is read from disk, processed by your device's CPU, and the AVIF is written back locally. There is no server upload at any point, which also means no size-based throttling or waiting in queue.
Do I need to install anything to convert HEIC to AVIF?
No installation. The converter is a web page — open it in any modern browser on Windows, macOS, Linux, iOS, or Android. HEIC decoding and AVIF encoding both run via WebAssembly at native-adjacent speed.
Does the converter keep metadata (title, artist, cover art)?
Where the AVIF container supports it, standard tags are carried across. AVIF can store 12-bit color with PQ/HLG transfer functions — actual HDR stills in an image file, impossible in JPEG/PNG/ordinary WebP