Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert JPG to AVIF
Convert JPG to AVIF online for free. Real conversion, batch support, no sign-up.
How to convert JPG to AVIF
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
JPG files are common for photos, web images, email attachments, printing, but not every app or device opens them. AVIF works best for high-performance websites. Spool converts JPG to AVIF with FFmpeg and libheif/Pillow — real decoding and encoding, not a renamed file extension.
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Settings
- Quality — 30–100%
JPG vs AVIF
| JPG | AVIF | |
|---|---|---|
| Full name | JPEG | AV1 Image File Format |
| Created by | Joint Photographic Experts Group, 1992 | Alliance for Open Media, 2019 |
| Type | Image | Image |
| Typical contents | lossy DCT compression, 8-bit color | AV1 intra-frame compression, HDR and alpha |
| Best for | photos, web images, email attachments, printing | high-performance websites |
| Strength | Universal compatibility | Smallest files of any common format |
| Weakness | No transparency | Slower to encode |
About JPG
- Type
- JPEG
- Contains
- lossy DCT compression, 8-bit color
- Use
- photos, web images, email attachments, printing
About AVIF
- Type
- AV1 Image File Format
- Contains
- AV1 intra-frame compression, HDR and alpha
- Use
- high-performance websites
FAQ
Are my photos uploaded?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Can I convert several JPG files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this JPG to AVIF converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.