AVIF is a next-generation format with the highest compression efficiency available. Current browsers open AVIF, but support in programs and services is uneven.
JPG is the most widely used lossy format for photos. When you convert AVIF to JPG, you can open it in more places, a solid background replaces transparency and the file grows. See the comparison below for what changes.
This converter reads the file itself to confirm it is AVIF, then converts it to JPG right in your browser. Your image is never uploaded.
AVIF vs JPG: what's the difference?
| Item | AVIF | JPG |
|---|---|---|
| Compression | Lossy or lossless | Lossy |
| Transparent background | Yes | No |
| Animation | Yes | No |
| Introduced | 2019 | 1992 |
| Support in programs and upload forms | limited | nearly everywhere |
| Shown directly in browsers | Yes | Yes |
| Photo file size (JPG = 1) | about 0.5× | baseline (1×) |
What is AVIF?
AVIF is an image format released in 2019 that builds on the still-image technology of the AV1 video codec. At the same quality it can be around 50% smaller than JPG, so websites sensitive to file size are adopting it quickly.
What is JPG?
JPG (JPEG) is a lossy format standardized in 1992. It drops information the human eye is less sensitive to, making photos very small. It is the format cameras and smartphones save by default, so it is the one you meet most often.
What changes when you convert AVIF to JPG
Transparent areas are filled with the background color you choose
JPG can't represent transparency. Transparent and semi-transparent areas are composited onto the background color in the options (white by default), so pick a matching color first if the image will be used on a dark screen.
An already-compressed image is compressed again
Both AVIF and JPG are lossy, so converting AVIF to JPG adds a little more degradation. Keeping quality at 90 or higher usually avoids visible differences, and it's best to convert from the original only once.
Moving images keep only their first frame
JPG can't hold animation. If your AVIF file is animated, only the first frame is converted.
You can adjust quality, size and background color
When converting AVIF to JPG, you can use the quality slider (default 90), exact width-and-height sizing with margin fill, and percentage resizing. AVIF is already lossy, so pushing quality too low stacks up visible degradation. Even when size matters, try not to go below 80.
How the file size changes
For the same photo, JPG tends to be larger than AVIF (about 2.0×). This is for photos; for simple images such as logos and screenshots, PNG can actually come out smaller.
JPG opens in more places
Support for AVIF in programs, document tools and upload forms is limited, while JPG is nearly everywhere. If you need to upload somewhere AVIF wouldn't open, try again after converting.
When to convert
- You need to upload to a program, messenger or upload form that can't open AVIF
- You're submitting to a place that doesn't need transparency (print, certificates, a product's main image) with a white background
- You're preparing an image for typical JPG uses (sharing photos, blog and online-shop product photos)
AVIF → JPG: practical tips
AVIF is a newer format, so older programs, messengers and upload forms often can't open it. Converting to JPG makes it open almost everywhere.
Because AVIF is much smaller at the same quality, converting to JPG can make the file nearly twice as large. If size is the problem, try lowering quality to around 80.