HEIC AVIF

HEIC to AVIF Converter

Convert HEIC to AVIF in your browser. Free, private, and fast. Control quality, transparency, and file size without sending files to a server.

Drag & drop your HEIC file here

or

Max file size: 50 MB · Your file stays in your browser

Your file is processed locally in your browser — nothing is ever uploaded.

Why Convert HEIC to AVIF?

ideal for iPhone photos; the output is useful because very efficient modern image format. Add 2–3 concrete use cases and one honest limitation.

Common use cases

  • You have a HEIC file and need it in AVIF format for optimising images for web performance and core web vitals.
  • The target software or platform requires AVIF but your file is in HEIC.
  • You want to reduce file size or improve compatibility without using desktop software.
Keep in mind: Browser support is growing but not universal — older browsers do not support AVIF and will need a fallback format.

How to Convert HEIC to AVIF

  1. Upload or drop your HEIC file into the converter above.
  2. Adjust any output settings for AVIF if needed.
  3. Click Convert and download your converted file instantly.

About the Formats

HEIC (High Efficiency Image Container)

HEIC is the photo format used by Apple devices since iOS 11. Based on the HEIF standard with H.

Compatibility: Native on iOS 11+, macOS High Sierra+. Requires plugins or conversion for Windows and Android.

AVIF (AV1 Image File Format)

AVIF is a next-generation image format developed by the Alliance for Open Media. It offers significantly better compression than JPG or WebP while maintaining high visual quality, supporting HDR, wide color gamut, and transparency.

Compatibility: Chrome 85+, Firefox 93+, Safari 16+, Edge 121+.

100% Private & Browser-Based

Your files never leave your device. All conversion happens locally in your browser — nothing is uploaded to any server. No sign-up required.

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Need the reverse?

AVIF to HEIC Converter

FAQ

Frequently Asked Questions

Yes — completely free with no sign-up, no watermarks, and no size limits for typical files.

Quality depends on the output settings. For lossless output, choose the highest quality setting available.

Your file is processed entirely within your browser using local JavaScript. It is never uploaded to any server. Only you can access your file.

For browser-based conversion, files up to 50 MB work best. Very large files may take longer depending on your device. We recommend splitting very large files before converting.

Currently, AintoB converts one file at a time to keep the browser-based process simple and private. Reload the page to convert another file.