Images

AVIF → HEIC

Learn about the formats: What is HEIC? What is AVIF?

Convert AVIF raster images to Apple's HEIC format instantly using our online tool. This conversion is ideal for users looking to view modern web graphics natively on iOS and macOS devices.

Both AVIF and HEIC are modern raster image formats, but they are built on different video coding technologies. AVIF is derived from the AV1 codec and is widely used for web optimization, while HEIC is based on HEVC (H.265) and serves as the standard container for Apple ecosystem captures. When you convert an AVIF file to HEIC, the underlying pixel data is re-encoded from one advanced compression algorithm to another, preparing the image for Apple-specific workflows.

Because both AVIF and HEIC formats utilize lossy compression, converting between them involves re-compression which can slightly degrade the original image quality. Try to avoid repeated conversions to prevent cumulative generation loss.

Tips

Check if your destination device natively supports HEIC playback before mass converting.
Keep backups of your original AVIF files if you plan to edit them further.
Expect the output file size to remain relatively unchanged due to comparable compression efficiencies.

Common use cases

Transferring web-downloaded AVIF graphics into Apple Photos for native viewing.
Preparing AVIF artwork for inclusion in iOS app development projects requiring HEIC assets.
Standardizing a mixed library of web images into Apple's preferred device format.

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File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

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Audio

Music, podcasts, voice recordings, and sound effects.

Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS

Advantages

+ FLAC and WAV preserve full quality for editing
+ MP3 and AAC are universally compatible
+ OPUS delivers great quality at low bitrates

Disadvantages

− Uncompressed WAV files are very large
− Lossy formats cannot be restored to original quality
− DRM-protected files may not convert

Frequently asked questions

The file size changes insignificantly because both AVIF and HEIC operate at high compression efficiencies, maintaining comparable megabyte footprints.

Yes, since both formats use lossy compression, the re-encoding process between AVIF and HEIC can lead to minor quality degradation.

Windows may require specific HEIF/HEVC codec extensions installed from the Microsoft Store to natively view HEIC files.

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