Convert modern AVIF images to universally compatible JPG format directly in your browser. Maximum fidelity by default, with complete privacy and zero server uploads.
Output Format
Evaluate how AVIF and JPG compare across compression algorithms, browser compatibility, transparency, and practical performance.
| Specification | AVIF | JPG (Target) |
|---|---|---|
Format Type | AV1-based next-gen raster | Standard DCT lossy raster |
Browser Support | ~93% (modern browsers) | 100% (all browsers & OSes) |
Transparency | Supported (Alpha channel) | Not supported (solid background) |
Compression Efficiency | Highest (up to 50% smaller) | Moderate |
Legacy Software | Limited support | Universal across all tools |
Format Optimization Guide
AVIF offers superior compression efficiency compared to legacy formats, making it a favorite for modern web performance. However, compatibility gaps remain in desktop graphic design suites, legacy operating systems, email clients, and hardware photo frames.
Converting AVIF to JPG restores full interchangeability. Every photo viewer, office suite, and social platform natively recognizes JPG, eliminating "unsupported file format" errors without losing visible detail.
Using WebAssembly (@jsquash/avif and MozJPEG), your AVIF image is decoded into raw pixel data and re-encoded into a high-density JPEG stream entirely inside your browser. No files are uploaded to our servers, keeping sensitive documents and private photos secure.
By default, conversion operates at 100% quality to avoid generation loss. If you wish to optimize file weight for web publishing, you can freely use our quality and dimension sliders before downloading.
Common questions about converting AVIF images to JPG format.
Often yes. AVIF is significantly more efficient at data compression than standard JPEG. Converting an AVIF file to a high-quality JPG will typically yield a larger file size because JPEG requires more bytes to represent equivalent visual detail.
JPEG does not support alpha channel transparency. Any transparent background in your AVIF image will be filled with a solid background (typically white or black). If you need to keep transparency, consider converting to PNG instead.
Yes. You can drop multiple AVIF images into the workspace and convert them simultaneously. Once processing completes, you can download them individually or as a single ZIP archive.
Completely. All decoding and encoding operations run locally in your web browser via WebAssembly. Your photos never leave your device and are never sent to external servers.
From the SpeedVitals blog
