How do I convert HEIF to AVIF?

Upload your HEIF file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting HEIF to AVIF lose quality?

AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.

HEIF or AVIF: which should I use?

Use HEIF for storing high-quality photos in less space on phones and cameras. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.

HEIF is the open standard behind HEIC. Samsung phones and several Canon, Sony and Fujifilm cameras can save HEIF photos, which are compact but not yet widely accepted.

Is the HEIF to AVIF converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert HEIF to AVIF — Smallest High-Quality Images

Convert HEIF to AVIF online for very small, high-quality web images. No software to install. Preview one free or batch-convert with Premium.

Drop your HEIF file or click to browse

Why convert HEIF to AVIF?

AVIF is supported far more widely than HEIF, so the file is easier to open, share and upload.
AVIF is made for the smallest high-quality images for websites and apps.

What to expect when converting HEIF to AVIF

AVIF uses lossy compression by default; raise the quality or switch on lossless in Settings for a closer copy.
High-dynamic-range and wide-colour detail is converted to standard 8-bit colour.

HEIF vs AVIF

機能	HEIF	AVIF
氏名	High Efficiency Image File Format	AV1 Image File Format
Origin	Developed by MPEG and finalised in 2015 (ISO/IEC 23008-12)	Released by the Alliance for Open Media in 2019
圧縮	Lossy (usually HEVC)	Lossy or lossless
Transparency	Rarely used in camera photos	Yes — smooth, partial transparency
アニメーション	いいえ	はい
色	8 or 10 bits per channel, wide colour	8, 10 or 12 bits per channel, including HDR
Where it opens	Recent phones and cameras; many PCs, apps and websites need extra software	Current Chrome, Edge, Firefox and Safari 16+; fewer editing apps
こんな方に最適	storing high-quality photos in less space on phones and cameras	the smallest high-quality images for websites and apps
Main drawback	many computers, apps and websites can’t open it	it is slow to create and many editing apps and older devices can’t open it

In short: choose HEIF for storing high-quality photos in less space on phones and cameras; choose AVIF for the smallest high-quality images for websites and apps.

Frequently asked questions

How do I convert HEIF to AVIF?: Upload your HEIF file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting HEIF to AVIF lose quality?: AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.
HEIF or AVIF: which should I use?: Use HEIF for storing high-quality photos in less space on phones and cameras. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.
What is a HEIF file?: HEIF is the open standard behind HEIC. Samsung phones and several Canon, Sony and Fujifilm cameras can save HEIF photos, which are compact but not yet widely accepted.
Is the HEIF to AVIF converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

HEIF to AVIF でできること

始める前に、主な機能を確認してください。

Convert HEIF files to AVIF online
Choose AVIF quality or switch to lossless
Switch to any other output format in Settings
Batch-convert many HEIF files into one ZIP
Preview the result before you download

このツールを使用する

設定リファレンス

HEIF to AVIF で使用可能なコントロール。

設定

出力形式ドロップダウン: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.オプション: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
品質スライダーレンジ: 20–100 · デフォルト: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
ロスレスモードオン/オフ: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景の塗りつぶしカラーピッカー: For JPG, BMP and image-to-PDF output, which can’t store transparency: the colour that fills transparent areas (white by default).