Convert AVIF to HEIF Online
Transform your AV1 Image File Format (AVIF) files into universally supported High Efficiency Image Format (HEIF) images in seconds. Our converter runs 100% locally in your browser—your images are never uploaded to remote servers, ensuring complete privacy and blazing fast conversions.
AVIF vs HEIF: Format Comparison
| Feature | AVIF | HEIF |
|---|---|---|
| Compression Algorithm | Lossy (Compact file size) | Lossy (Compact file size) |
| Alpha Transparency | Supported (Transparent background) | Supported (Transparent background) |
| Animation / Sequences | Supported | Supported |
| Browser Compatibility | 94%+ (Chrome, Safari 16+, Firefox 93+, Edge) | Partial (Native on Apple OS; requires conversion for web embedding) |
| Ideal Application | Ultra-low bandwidth web delivery, HDR photos, next-gen digital publishing | Next-generation photography and multi-image containers |
How to Convert AVIF to HEIF (3 Easy Steps)
- Upload AVIF: Select your AVIF file by dragging and dropping it into the conversion box, or click Browse to choose from your device.
- Select HEIF Output: Configure your output parameters. The tool is pre-set to convert to HEIF. Adjust quality or dimension preferences if required.
- Instant Download: Click Convert and download your finished HEIF instantly. Everything processes locally in your browser memory.
Technical Specifications
About AVIF
Full Name: AV1 Image File Format
MIME Type: image/avif
Developer / Standard: Alliance for Open Media
AVIF is derived from the open-source royalty-free AV1 video codec.
About HEIF
Full Name: High Efficiency Image Format
MIME Type: image/heif
Developer / Standard: Moving Picture Experts Group (MPEG)
HEIF is the universal ISO standard that Apple HEIC is built on.
Frequently Asked Questions
How do I convert AVIF to HEIF for free?
Simply drop your AVIF file into the converter box above, ensure HEIF is selected as the output format, and click Convert. Your converted HEIF file is generated instantly right in your browser.
Will converting AVIF to HEIF reduce image quality?
Our converter uses maximum quality compression settings to preserve as much visual detail as possible while optimizing file size for HEIF.
Does converting AVIF to HEIF preserve transparency?
Yes! HEIF supports alpha transparency. If your source AVIF image has a transparent background, it will be preserved.
Is my file safe when converting on convertfiles.app?
100% safe. Unlike traditional cloud converters, convertfiles.app processes everything directly on your device using WebAssembly and HTML5 Canvas. Your files never leave your computer or phone.