AVIF to WebP

What is AVIF?

AVIF (AV1 Image File Format) is a modern image format introduced in 2019 by the Alliance for Open Media, the same industry group behind the AV1 video codec. Built on AV1 intra-frame coding, it delivers outstanding compression efficiency, often producing files around 50% smaller than JPG at equivalent visual quality. AVIF supports lossy and lossless compression, wide color gamut, HDR, 12-bit color depth and alpha transparency, making it one of the most technically capable image formats available today.

Because of these strengths, AVIF has been adopted by major platforms such as Netflix, Google Images and Cloudflare as a next-generation web format. However, AVIF is still relatively new: decoding requires a modern browser (Chrome 85+, Firefox 93+, Safari 16+), and many older applications, content management systems, image editors and email clients cannot open .avif files at all. Converting AVIF to WebP is a reliable way to retain modern compression while gaining broader software and toolchain compatibility.

What is WebP?

WebP is a modern image format introduced by Google in 2010 specifically for the web. It uses technology from the VP8 video codec to deliver both lossy and lossless compression in a single format. WebP lossy files are typically 25–35% smaller than JPG at equivalent visual quality, while WebP lossless files are around 26% smaller than PNG. WebP also supports alpha-channel transparency (even with lossy compression) and animation, making it a versatile all-in-one web image format.

WebP is supported by every modern browser — Chrome, Edge, Firefox, Safari, Opera and most mobile browsers — and by the vast majority of image editors, CMS platforms, CDN providers and developer tools. It has become the default format for web performance optimization. Converting your AVIF image to WebP keeps the small file size while maximizing compatibility across browsers, frameworks and image-processing toolchains.

AVIF vs WebP comparison

AVIF and WebP are both next-generation image formats designed to outperform JPG and PNG on the web. They share many features — lossy and lossless modes, transparency, animation — but differ in compression efficiency, age and ecosystem support. The table below summarises the key differences between AVIF and WebP.

Feature	AVIF	WebP
Year introduced	2019	2010
Compression efficiency	Best-in-class (AV1-based)	Excellent (VP8-based, ~25–35% smaller than JPG)
Max color depth	12-bit, wide gamut, HDR	8-bit, sRGB
Transparency	Yes (alpha channel)	Yes (alpha channel)
Animation	Yes (image sequences)	Yes (animated WebP)
Lossless mode	Yes	Yes
Browser support	Modern browsers only (Chrome 85+, Firefox 93+, Safari 16+)	All modern browsers (Chrome 32+, Firefox 65+, Safari 14+)
Software / toolchain support	Limited (newer editors, libraries)	Mature (most editors, CMS, CDN, build tools)
Encoding speed	Slower (more complex codec)	Faster

In short, AVIF offers the best compression and most advanced image-quality features, while WebP offers slightly larger files but broader toolchain support and faster encoding. Converting from AVIF to WebP trades a small amount of compression efficiency for wider compatibility across browsers, frameworks and image-processing pipelines.

When to use AVIF to WebP conversion

There are many practical situations where converting an AVIF image to WebP is the right choice. Whenever your toolchain, framework or target audience benefits from broader WebP support, a quick AVIF to WebP conversion is the solution:

• Broader browser support. WebP works in Safari 14+ and older browser versions where AVIF decoding may not be available, ensuring more users can view the image.
• CMS and platform compatibility. WordPress, Drupal, Shopify, Strapi and many CMS platforms have mature WebP pipelines but limited AVIF support.
• Image-processing libraries. Many image libraries (Pillow, ImageMagick, sharp) and SaaS APIs support WebP more reliably and with more features than AVIF.
• Build pipelines and CDNs. Most CDN providers (Cloudflare, CloudFront, Akamai) and build tools (webpack, Vite, Next.js) have first-class WebP support.
• Faster encoding. AVIF encoding is computationally heavy. WebP encodes faster, which matters for bulk conversions or on-the-fly resizing.
• Email and document workflows. Office software and email clients are more likely to render WebP than AVIF, although JPG remains the safest choice for maximum compatibility.

Keep your original AVIF file as a master copy whenever possible — it is smaller and higher quality. Use the WebP export when you need broader toolchain and browser support while still maintaining a small file size.

How to convert AVIF to WebP

Converting an AVIF image to WebP with this tool takes only a few seconds and happens entirely inside your browser. No upload, no sign-up, and no installation are required. Follow these four steps:

1. Upload your AVIF file. Click the upload area or drag and drop a .avif file from your computer. The image is decoded locally and shown as a preview.
2. Adjust the WebP quality. Use the quality slider from 10% to 100% to balance file size and visual quality. 85% is a good default for photographs; lower values produce smaller files.
3. Convert to WebP. Click the "Convert to WebP" button. The tool re-encodes the decoded image to the WebP format via the Canvas API and shows the original and converted file sizes plus the percentage saved.
4. Download the WebP. Click "Download WebP" to save the converted file to your device. The original AVIF remains untouched on your computer.

Because every step runs locally in your browser using JavaScript, your AVIF image is never uploaded to a server. This makes the conversion completely private, fast and suitable for sensitive or confidential images. Note that AVIF decoding requires a modern browser such as Chrome 85+, Edge, Firefox 93+ or Safari 16+.