How to Convert HEIF to AVIF

HEIF is a flexible container format that can technically hold images encoded with different codecs, and in practice almost all real-world HEIF files use HEVC, the same patent-encumbered codec behind HEIC. AVIF is built on the same general container approach as HEIF but uses the royalty-free AV1 codec instead, which is why AVIF has been embraced by browsers and open-source software in a way that HEVC-based HEIF never was.

Converting HEIF to AVIF keeps the same general compression efficiency while moving to a codec with far broader support across browsers and platforms, making it a practical choice if you're preparing HEIF photos for web use or any context where HEVC licensing creates compatibility friction.

1. Install Turbo Batch Image Converter Pro on your Windows PC.
2. Open the app and select Batch Mode for multiple files, or Individual Mode for a single HEIF file.
3. Drag your HEIF file or folder into the app window, enabling recursive folder scanning if needed.
4. Set the "From" format to HEIF and the "To" format to AVIF.
5. Adjust the quality setting to balance file size against visual detail.
6. Click Convert. AVIF files are written to your output folder, fully offline.

• 100% offline — your photos are never sent to any server
• Works with HEIF files from any device or manufacturer
• Produces AVIF files with broader browser support than HEVC-based HEIF
• Multi-core processing for fast handling of large batches
• Option to delete original HEIF files automatically once converted
• No recurring subscription or hidden upload limits