Convert AVIF to WebP for web use. Free online conversion.
Max file size 10MB. Sign up for more.
| File Name | Size | Convert To |
|---|
Checking files and selected output formats.
| File Name | File Size | Download |
|---|
WebP is Google's image format — 25-35% smaller than JPG at equivalent visual quality, with support for both lossy and lossless modes plus transparency. Every modern browser supports it. The main use case: cutting page weight on websites. Lighthouse, PageSpeed Insights, and Core Web Vitals audits actively flag JPG/PNG hero images as "serve in next-gen formats" — WebP is the answer.
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.
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 | |
| 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 |
AVIF (AV1 Image File Format) is a next-generation image format based on the open-source AV1 video codec, standardized in 2019 by the Alliance for Open Media. It delivers exceptional compression efficiency — typically 20-30% better than WebP and up to 50% better than JPEG at equivalent visual quality. AVIF supports both lossy and lossless compression, making it one of the most versatile modern image formats available.
AVIF is designed for the next era of web imagery, supporting features like HDR (High Dynamic Range), wide colour gamuts with 12-bit depth, and full transparency. Browser support has been growing steadily, with Chrome, Firefox, and Safari 16+ all providing native AVIF rendering. The primary trade-off is encoding speed — AVIF images take significantly longer to compress than JPEG or WebP, which can be a bottleneck for real-time image processing pipelines and high-volume workflows.
Read image-format guides, transparency tips, compatibility fixes, and file-size advice related to Free Online AVIF to WEBP Converter.
WebP is already smaller than JPG and PNG, but you can compress it further. Here are the optimal quality settings and when to use lossy vs lossless WebP.
Not every image format works in every email client. JPG is the safest bet for photos, PNG for screenshots. Here is when to use each and what to avoid.
PNG files are notoriously large. Here is how to get them under 50KB for web use without making them look terrible, plus when to ditch PNG entirely.
Images account for most of a web page's weight. Reducing their file size is the single biggest improvement you can make to page speed, Core Web Vitals, and bounce rate.
When you need to convert 50 or 500 images from HEIC to JPG, PNG to WebP, or any other format, doing them one at a time is not an option. Here are the best batch conversion methods compared.
The best TinyPNG alternatives in 2026. Compress PNG, JPG, and WebP without the 20-file batch limit or the 5 MB file cap. Compared honestly, ranked by output quality.
