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Free Online AVIF to WEBP Converter

Convert AVIF to WebP for web use. Free online conversion.

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Max file size 50MB. Sign up for more.

AVIF to WebP: between two next-gen formats

Both AVIF (AV1 codec) and WebP (VP8/VP8L codec) are modern formats designed to replace JPG on the web. AVIF achieves slightly better compression but has slower encode/decode speeds and less browser support than WebP. The conversion decodes the AV1 bitstream and re-encodes with VP8. Since both are lossy, one additional generation of compression occurs — quality loss is minimal at high quality settings but the file may be 10-20% larger than the AVIF source.

Convert AVIF to WebP when you need broader browser compatibility (WebP: 97%+ vs AVIF: 92%+) or when your CMS, CDN, or image pipeline doesn't support AVIF yet. WebP is a safe middle ground between JPG compatibility and modern compression.

AVIF vs WebP: Side-by-side

Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.

Property AVIF WebP
Full name AV1 Image File Format WebP (Google)
Year introduced 2019 2010
Developer / standard body Alliance for Open Media Google
MIME type image/avif image/webp
File extension .avif .webp
Compression Lossy or lossless (AV1) Lossy or lossless (VP8/VP8L)
Color / data depth 8/10/12-bit 24-bit + 8-bit alpha
Max dimensions / size 65,536 × 65,536 px 16,383 × 16,383 px
Transparency Yes Yes
Animation Yes Yes
Standard / specification AOMedia AV1 RFC 9649 (lossless), RFC 6386 (VP8)
Best for Next-gen web images — 50% smaller than JPG, 20% smaller than WebP Modern web — 25–35% smaller than JPG/PNG at equivalent quality
Read the full AVIF vs WebP comparison

AVIF to WEBP FAQ

Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert AVIF files to WEBP.

How do I convert AVIF to WEBP?
Upload your AVIF image to iFormat and click Convert — it's decoded and re-encoded to WEBP in seconds. It's free, adds no watermark, and needs no account. Batch upload is supported, and results download individually or as a ZIP.

Can I convert AVIF to WEBP without losing quality?
WEBP is a modern Google format with strong compression. Converting to a lossless target such as PNG, TIFF or BMP preserves every pixel exactly. Converting to a lossy one such as JPG or WebP re-encodes the image, and iFormat uses a high default quality so the difference is invisible at normal viewing size. For the sharpest result, always convert from the highest-quality source you have.

What is AVIF?
AVIF is a next-generation AV1-based image format, typically used for very small, high-quality web images. Converting it to WEBP makes the file easier to open, share, or upload where AVIF is not supported.

AVIF vs WEBP — which format should I use?
AVIF is a next-generation AV1-based image format best for very small, high-quality web images. WEBP is a modern Google format with strong compression best for fast-loading web images. Use WEBP when a website, form, or app requires it, or when you need WEBP's specific strengths like smaller file size, wider compatibility, or transparency support.

How do I open AVIF files?
On Windows: Photos with the AV1 Video Extension, or Chrome/Edge. On a Mac: Preview (macOS 13+), or Chrome. Support is still arriving. Windows needs the AV1 Video Extension from the Microsoft Store; older macOS and Office will not open it at all.

Is WebP or AVIF better for websites?
AVIF compresses 30–50% better than WebP at the same visual quality, but WebP has broader browser support (97%+ since 2020). AVIF support is catching up fast — Chrome, Firefox, and Safari 16+ all handle it. Converting AVIF to WebP trades some compression efficiency for compatibility with older browsers.

Will my AVIF transparency survive the WebP conversion?
Yes. Both AVIF and WebP support full alpha-channel transparency. Semi-transparent edges, drop shadows, and variable opacity all carry across cleanly.
Need the reverse conversion?
Convert WEBP back to AVIF with our companion tool.
WEBP to AVIF converter

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