Convert JPG to AVIF — Free, Private, No Upload
Convert JPG images to high-quality AVIF format instantly. No upload, batch processing, free.
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How to Convert JPG to AVIF
Select your JPG files
Choose files or drag and drop them into the converter. Any image format is accepted.
Convert to AVIF
Conversion starts automatically with optimized defaults. Adjust quality in advanced settings.
Download
Download converted files individually or as a ZIP archive.
Why Convert JPG to AVIF?
AVIF delivers stunning image quality at file sizes 50% smaller than JPG. Converting your JPG photos to AVIF is one of the most effective ways to speed up a website without sacrificing visual quality. It is the format that Google, Netflix, and other tech leaders use for next-generation image delivery.
AVIF uses the AV1 codec, which applies advanced compression techniques that JPG simply cannot match. Photos look sharper at the same file size, or identical at half the size. AVIF also supports features JPG lacks: transparency, wide color gamut, and HDR.
With LeanImg, conversion happens entirely in your browser. Your images never leave your device — no upload, no waiting, no privacy concerns. The tool is free with no account needed.
AVIF encoding takes slightly longer than JPG due to its sophisticated compression, but the results are worth it for web delivery. For maximum compatibility, you can serve AVIF with a JPG fallback. Want to try the middle ground? Check out JPG to WebP instead.
JPG vs AVIF
| Feature | JPG | AVIF |
|---|---|---|
| File Size | Baseline | ~50% smaller |
| Transparency | No | Yes |
| Compression | Lossy | Lossy or lossless |
| Browser Support | Universal | Chrome, Firefox, Safari |
| Best For | Photos (legacy) | Photos (next-gen web) |
| Color Depth | 8-bit | 8/10/12-bit, HDR |
Frequently Asked Questions
How to convert JPG to AVIF?
Open LeanImg in your browser and drag your JPG files into the converter. AVIF files are created right on your device in seconds. It is completely free, requires no account, and never uploads your images. You can batch convert multiple JPG files at once.
Is it safe to convert JPG to AVIF online?
Yes. LeanImg processes images entirely in your browser. Your photos are never uploaded to any server, never stored, and never accessible to anyone. The conversion uses local WebAssembly technology. It is just as private as using software installed on your computer.
How to convert JPG to AVIF on Windows?
Open Chrome, Edge, or Firefox on your Windows PC and visit LeanImg. Drop your JPG files into the converter area and download AVIF files instantly. No installation needed — it works in your browser on Windows 10, 11, or any other version.
Is AVIF better than JPG?
For web delivery, yes. AVIF produces files roughly 50% smaller than JPG at the same visual quality. It also supports transparency and HDR. The main tradeoff is that encoding is slower and some older software cannot open AVIF files yet.