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Convert AVIF to HEIF Online Free

Fast, free, and private AVIF Image to High Efficiency Image File converter. Get SD and HD quality versions — no upload, no registration required.

Drop your AVIF file here

or click to browse files

.avif accepted

Why Convert AVIF to HEIF?

Converting AVIF Image (AVIF) to High Efficiency Image File (HEIF) helps with compatibility, file size optimization, and meeting format requirements. HEIF is widely supported and ideal for web, sharing, and archival purposes.

How to Convert AVIF to HEIF

  1. Drag and drop your AVIF file onto the upload area above, or click to browse
  2. Adjust SD and HD quality settings if needed (optional)
  3. Click "Convert to HEIF" to process your image
  4. Compare the SD and HD results side by side
  5. Download your preferred HEIF version

About AVIF Format

AVIF Image (AVIF) is a widely used image format. AVIF is a next-generation format based on AV1 video codec, offering up to 50% better compression than JPEG with similar quality.

About HEIF Format

High Efficiency Image File (HEIF) is a popular image format. HEIF (High Efficiency Image File) is the container format behind HEIC, supporting advanced compression and image sequences.

Frequently Asked Questions

Is it free to convert AVIF to HEIF?

Yes, FxtImg is 100% free. No hidden fees, watermarks, or file limits. Convert as many AVIF files to HEIF as you need.

Are my AVIF files uploaded to a server?

No. All conversion happens in your browser using client-side technology. Your images never leave your device.

What is SD vs HD quality?

SD (Standard Definition) uses lower quality and smaller dimensions for compact files — great for web and social media. HD preserves maximum quality and original dimensions for professional use.

What is the max file size?

Processing is client-side, so there is no server limit. Very large files (50MB+) may be slower depending on your device.

Can I batch convert AVIF files?

Currently FxtImg processes one image at a time for best quality. Convert, download, then click "Convert Another" for the next.

Why convert AVIF to HEIF?

Converting AVIF Image (AVIF) to High Efficiency Image File (HEIF) helps with compatibility, file size optimization, and meeting format requirements. HEIF is widely supported and ideal for web, sharing, and archival purposes.

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