JPG to AVIF converter
Your files are converted on your device. They are never uploaded.
or drop them here, or paste with Ctrl+V / ⌘V
.jpg.jpeg
- Files stay on your device
- Batch + ZIP
- No sign-up, no limits
This converter runs in your browser and needs JavaScript. Turn it on to convert; the steps below explain everything.
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Squeeze photos for the web with AVIF, the most compact format browsers support, encoded right on your device.
AVIF is what you reach for when every kilobyte counts: hero images, image-heavy galleries, stores with hundreds of product photos. At the same visual quality it is typically well below half the size of a JPG, and all current major browsers display it. The catch is encoding time, which is far longer than for JPG or WEBP. This page runs the AVIF encoder locally, with a speed setting so you can trade time for size.
How to convert JPG to AVIF
- Drop the JPG photos you want to publish.
- Set a max size for your layout, keep quality around 60, and pick an effort: Fast for quick results, Balanced or Best to squeeze out a few more percent if you can wait.
- Convert, download the AVIFs (or a ZIP) and add them to your site, ideally with a JPG fallback.
What happens to quality, size and metadata
AVIF quality numbers don’t map to JPG numbers: AVIF at 60 typically looks about as good as JPG at 85–90. Push lower and AVIF tends to smooth fine textures such as skin, grass and fabric instead of showing blocks. Effort changes only how hard the encoder searches, not the quality setting: Best gives somewhat smaller files and takes much longer.
The first conversion downloads the AVIF encoder once (around 1 MB), then it works offline. AVIF files from this tool carry no EXIF, so date taken, camera and GPS are all gone.
- Test files
- 30
- Average input
- 2.2 MB
- Average output
- 285 KB
- Size change
- 87% smaller
- Time per file
- 1.3 s
JPG vs AVIF
| Full name | JPG | AVIF |
|---|---|---|
| Full name | JPEG (Joint Photographic Experts Group) | AV1 Image File Format |
| Introduced | 1992 | 2019 |
| Defined by | JPEG (ITU-T & ISO/IEC) · ITU-T T.81 / ISO/IEC 10918-1 | Alliance for Open Media (AOMedia) · AV1 Image File Format |
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Largest size | 65,535 × 65,535 px | — |
| Chrome / Edge | Yes | Yes |
| Safari | Yes | Yes |
| Firefox | Yes | Yes |
| Windows | Yes | Partly |
| iPhone / iPad | Yes | Yes |
| Android | Yes | Yes |
| Typical use | Photos for sharing, email, online forms and printing, where it has to open everywhere. | Modern websites and image CDNs that want the smallest files at good quality. |
JPG JPG is the lossy photo format standardised in 1992 as ITU-T T.81. It throws away detail the eye barely notices, and the quality setting decides how much. It has no transparency and no animation, but every phone, computer, browser, printer and upload form opens it.
AVIF AVIF stores pictures compressed with the AV1 video codec in a HEIF container. The Alliance for Open Media published it in 2019. It usually beats WebP and JPG on size at the same quality, supports transparency, HDR and animation, and works in all current major browsers.
Sources for this table
- www.itu.int/rec/T-REC-T.81
- www.w3.org/Graphics/JPEG/itu-t81.pdf
- developer.mozilla.org/en-US/docs/Web/Media/Guides/Formats/Image_types
- developer.android.com/media/platform/supported-formats
- aomediacodec.github.io/av1-avif/
- caniuse.com/avif
- apps.microsoft.com/detail/9mvzqvxjbq9v
Browser support data: caniuse.com, CC BY 4.0.
Without this site
Windows and macOS can display AVIF but neither ships a way to save it from Photos, Paint or Preview. Command-line encoders and some image editors can, and many image CDNs and website platforms create AVIF automatically from your uploads, which is worth checking before converting by hand. To try AVIF on a handful of photos without installing anything, this page is the shortest path.
Troubleshooting
- It’s slow. AVIF encoding is heavy, especially on phones and with Best effort. Use Fast for large batches, or convert on a computer.
- Faces look waxy. Quality is too low for that photo; try 65–70.
- Some email clients or apps won’t show it. AVIF is a web format. Keep JPGs for sharing.
- Missing metadata. The AVIF has no EXIF. Fine for publishing, so keep the JPG originals as your archive.
Questions and answers
How much smaller is AVIF than JPG?
For typical photos at similar visual quality, AVIF files are often half the size of the JPG or smaller. The exact saving depends on the image and settings; our measured result on a sample set is in the table above. Resizing to the displayed size adds a further saving on top.
Do all browsers support AVIF?
All current major browsers do: Chrome and Edge, Firefox, Opera, and Safari from version 16 (iOS 16 and macOS Ventura). Older Apple devices that can’t update are the main gap. For a public site, serve AVIF with a JPG or WEBP fallback using the picture element.
Why does AVIF take so long to convert?
AVIF uses AV1, a video codec that tests many ways of coding each block of the image to find the most compact one. That search is what makes files small and conversion slow. The effort setting limits it: Fast is the default and is usually good enough; Best can take several times longer for a modest extra saving.
Should I use AVIF or WEBP for my website?
AVIF usually gives smaller files at the same quality; WEBP encodes much faster and is supported by slightly older browsers. Many sites serve AVIF first with WEBP or JPG as a fallback. If you convert by hand and have hundreds of images, WEBP is the practical choice; for key images, AVIF is worth the wait.