How do I convert WebP to AVIF?

Upload your WebP 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 WebP 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.

Will the AVIF keep the transparent background?

Yes. AVIF supports smooth, partial transparency, so transparent areas stay transparent.

Will the animation be kept?

No. AVIF can’t hold animation, so an animated WebP is saved as its first frame.

WebP or AVIF: which should I use?

Use WebP for websites, online stores and blogs that need fast-loading images. 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.

WebP was designed by Google for the web. Google measured lossy WebP files at 25–34% smaller than comparable JPGs, and WebP also handles transparency and animation.

Is the WebP 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 WebP to AVIF — Smallest High-Quality Images

Convert WebP to AVIF online for very small web images that keep transparency. No software to install. Preview one free or batch-convert with Premium.

Drop your WebP file or click to browse

Why convert WebP to AVIF?

AVIF files are usually smaller than WebP for the same picture, so pages load faster and uploads finish sooner.
Transparent areas stay transparent: AVIF supports smooth, partial transparency just like WebP.
AVIF is made for the smallest high-quality images for websites and apps.

What to expect when converting WebP to AVIF

AVIF can’t hold this animation, so an animated WebP is saved as its first frame.
AVIF uses lossy compression by default; raise the quality or switch on lossless in Settings for a closer copy.

WebP vs AVIF

機能	WebP	AVIF
氏名	WebP	AV1 Image File Format
Origin	Released by Google in 2010	Released by the Alliance for Open Media in 2019
圧縮	Lossy or lossless	Lossy or lossless
Transparency	Yes — smooth, partial transparency	Yes — smooth, partial transparency
アニメーション	はい	はい
色	8 bits per channel	8, 10 or 12 bits per channel, including HDR
Where it opens	All current browsers; some older desktop apps and upload forms reject it	Current Chrome, Edge, Firefox and Safari 16+; fewer editing apps
こんな方に最適	websites, online stores and blogs that need fast-loading images	the smallest high-quality images for websites and apps
Main drawback	older apps and some upload forms don’t accept it	it is slow to create and many editing apps and older devices can’t open it

In short: choose WebP for websites, online stores and blogs that need fast-loading images; choose AVIF for the smallest high-quality images for websites and apps.

Frequently asked questions

How do I convert WebP to AVIF?: Upload your WebP 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 WebP 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.
Will the AVIF keep the transparent background?: Yes. AVIF supports smooth, partial transparency, so transparent areas stay transparent.
Will the animation be kept?: No. AVIF can’t hold animation, so an animated WebP is saved as its first frame.
WebP or AVIF: which should I use?: Use WebP for websites, online stores and blogs that need fast-loading images. 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 WebP file?: WebP was designed by Google for the web. Google measured lossy WebP files at 25–34% smaller than comparable JPGs, and WebP also handles transparency and animation.
Is the WebP 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.

WebP 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 WebP files to AVIF online
Choose AVIF quality or switch to lossless
Switch to any other output format in Settings
Batch-convert many WebP 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

WebP 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).