Convert JPG to AVIF Online
Free, private JPG to AVIF 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
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How to convert JPG to AVIF
Drop your JPG 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 AVIF file
Once the conversion finishes, click the download button and you are done. The converted file is ready to use.
Why convert JPG to AVIF?
JPG and AVIF serve different purposes. Converting between them lets you use whichever format works best for your situation.
What is a JPG file?
Joint Photographic Experts Group: JPEG is the default format for photographs. If you've taken a photo with your phone or downloaded an image from the web, chances are it was a JPEG. It uses lossy compression to keep file sizes small while maintaining reasonable visual quality.
Created by: Joint Photographic Experts Group (ISO/IEC), first published in 1992
Used for: Photographs, web images, email attachments, social media uploads
Technical details: Lossy compression with adjustable quality. Higher quality means bigger files. Does not support transparency. Works best for complex images with lots of color variation like photos.
Compatibility: Universally supported on every device, browser, and platform.
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.
JPG vs AVIF
| Feature | JPG | AVIF |
|---|---|---|
| Type | Joint Photographic Experts Group | AV1 Image File Format |
| Best for | Photographs, web images, email attachments, social media uploads | Web images where file size is critical, high-quality photo compression |
| Compatibility | Universally supported on every device, browser, and platform. | Supported in Chrome, Firefox, Safari (since 16.4), and Edge. Some older browsers and image editors may not support it yet. |
| Pros | Small file sizes for photos, adjustable quality, universal support | Best-in-class compression, HDR and wide color support, transparency |
| Cons | Lossy compression degrades quality with each re-save, no transparency support | Slower to encode than JPEG or WebP, not yet universal outside modern browsers |