Convert JPEG to AVIF online
Convert JPEG files to AVIF directly in your browser. Your images never leave your device — all processing happens locally for instant, private results.
JPEG is the universal lossy photo format, introduced in 1992 and supported by virtually every device and app. AVIF is an open, royalty-free format based on the AV1 codec (2019) that delivers very small files with HDR and transparency support. To convert JPEG to AVIF, drop your files into the tool above — conversion runs entirely in your browser, so nothing is ever uploaded.
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Drop your images here
or click to choose files
How to convert JPEG to AVIF
- 1
Drop your JPEG files into the box above, or click to choose them from your device.
- 2
Adjust the quality slider if you want — the default works for most uses.
- 3
Click Convert and wait a moment while your browser processes the files.
- 4
Download each converted AVIF file individually, or grab them all as a ZIP archive.
JPEG vs AVIF comparison
| JPEG | AVIF | |
|---|---|---|
| Compression | lossy | both |
| Alpha (transparency) | — | ✓ |
| Animation | — | ✓ |
| Vector | — | — |
| Relative size | ~1× JPG | ~0.5× JPG |
| Browser support | Universal — all browsers since 1995 | Chrome 85+, Firefox 93+, Safari 16+ |
- AVIF files are typically smaller than JPEG, which saves storage space and bandwidth.
- AVIF supports an alpha channel, so transparency is available where JPEG has none.
- JPEG already opens almost everywhere, so convert to AVIF only when you specifically need its advantages.
JPEG and AVIF are both raster image formats, but they make different trade-offs in compression, transparency, animation and compatibility — the comparison table above lays out exactly how they differ. Converting between the two lets you pick the right format for each situation: keep originals in one format for archival and export copies in another for sharing or web use. Our converter runs entirely client-side using modern WebAssembly codecs, so conversion is fast, private, and works even on patchy mobile connections. There are no daily limits, no watermarks, no signup, and no ads tracking you across the web. The same engine powers every conversion on this site, and we lazy-load only the codecs needed for your specific JPEG to AVIF conversion — keeping the initial page download tiny.
Frequently asked questions
Is this JPEG to AVIF converter really free?
Yes — completely free, no signup, no watermarks, no per-day limits.
Do you upload my files to a server?
No. All conversion happens in your browser using WebAssembly. Your files never leave your device.
What is the maximum file size?
50 MB per file, with up to 20 files per batch. On mobile devices we recommend smaller files for memory reasons.
Can I convert multiple JPEG files at once?
Yes — drop up to 20 files at once and download them all as a ZIP archive.
Does this work on iPhone and Android?
Yes, the converter works in any modern mobile browser including Safari and Chrome.
Will I lose quality converting from JPEG to AVIF?
Quality depends on the formats and your chosen quality setting. Lossless formats like PNG preserve every pixel; lossy formats like JPEG let you trade quality for smaller files.
Why convert JPEG to AVIF?
It depends on what you need. JPEG and AVIF differ in file size, transparency support, quality and compatibility — the comparison table on this page shows exactly how, so you can pick whichever fits your use case.
Is AVIF better than JPEG?
Neither is universally better — each makes different trade-offs. Check the comparison above: it spells out the differences in compression, transparency, animation and browser support between JPEG and AVIF so you can decide for your specific need.
Why is my converted AVIF file a different size than the JPEG original?
Each format compresses pixels differently. Switching from JPEG to AVIF re-encodes the image, so the output can be larger or smaller depending on the formats and the quality setting you choose — the comparison table shows the typical direction.