Convert AVIF to WebP Online
Free, private AVIF to WebP converter. Your files never leave your browser. All processing happens locally on your device.
Drag & drop files here
images, PDFs, documents, audio, video, and more
No Server Uploads
FormatShift converts files directly in your browser. Your files never leave your device, so there's nothing to intercept or leak.
Instant Export
Files convert on your machine, so downloads are ready right away, even on slow connections.
High Fidelity
Good encoding keeps your files looking and sounding right, even at smaller sizes.
Built for Privacy
Your files are processed entirely in your browser. They never leave your device.
How to convert AVIF to WebP
Drop your AVIF file
Drag your file onto the converter above, or click to browse your files. Your files stay on your device.
Automatic conversion
FormatShift converts your file right in your browser using WebAssembly. No server involved, so your data stays completely private.
Download your WebP file
Once the conversion finishes, click the download button and you are done. The converted file is ready to use.
Why convert AVIF to WebP?
AVIF and WebP serve different purposes. Converting between them lets you use whichever format works best for your situation.
What is a AVIF file?
AV1 Image File Format: AVIF is a newer image format based on the AV1 video codec. It compresses images more efficiently than JPEG or WebP, producing smaller files at the same quality. Browser support has been catching up quickly.
Created by: Alliance for Open Media, first released in 2019
Used for: Web images where file size is critical, high-quality photo compression
Technical details: Based on AV1 video codec. Supports lossy and lossless compression, HDR, wide color gamut, and transparency. Typically 20-50% smaller than JPEG at similar quality.
Compatibility: Supported in Chrome, Firefox, Safari (since 16.4), and Edge. Some older browsers and image editors may not support it yet.
What is a WebP file?
Web Picture format: WebP is Google's image format built specifically for the web. It produces smaller files than both JPEG and PNG while keeping similar quality. Most modern browsers support it, though older software sometimes does not.
Created by: Google, first released in 2010
Used for: Web images, page speed optimization, anywhere file size matters
Technical details: Supports both lossy and lossless compression, plus transparency and animation. Typically 25-35% smaller than JPEG at comparable quality.
Compatibility: All modern browsers (Chrome, Firefox, Safari, Edge). Some older image editors may not open WebP files.
AVIF vs WebP
| Feature | AVIF | WebP |
|---|---|---|
| Type | AV1 Image File Format | Web Picture format |
| Best for | Web images where file size is critical, high-quality photo compression | Web images, page speed optimization, anywhere file size matters |
| Compatibility | Supported in Chrome, Firefox, Safari (since 16.4), and Edge. Some older browsers and image editors may not support it yet. | All modern browsers (Chrome, Firefox, Safari, Edge). Some older image editors may not open WebP files. |
| Pros | Best-in-class compression, HDR and wide color support, transparency | Smaller files than JPEG and PNG, supports transparency and animation |
| Cons | Slower to encode than JPEG or WebP, not yet universal outside modern browsers | Not as universally supported as JPEG or PNG outside of web browsers |