JPEG to AVIF
- Input
- 820 KB JPEG, AVIF at quality 65%
- Output
- About 300 KB
AVIF's compression is substantially more efficient, so large photographs benefit the most.
AVIF Converter
AVIF is currently the most efficient widely-supported image format, producing files roughly 20–30% smaller than WebP and around half the size of JPEG at the same quality. It supports transparency and high dynamic range. The trade-off is slower encoding and patchier support for creating files.
Runs entirely in your browser — your images are never uploaded.
How to
How to use the AVIF Converter
- 1
Add images
Drop in JPG, PNG, WebP or AVIF files.
- 2
Choose the direction
Convert to AVIF for the smallest files, or from AVIF to JPG, PNG or WebP for compatibility.
- 3
Set the quality
AVIF holds up better at low settings than JPEG, so 60–70% often still looks clean.
- 4
Download
Save individually or as a ZIP.
Examples
AVIF Converter examples
AVIF back to JPEG
- Input
- AVIF file, output JPEG
- Output
- Larger file that any software can open
AVIF support is still uneven outside browsers. Converting back restores compatibility.
Low quality comparison
- Input
- Same photo at 50% in JPEG and AVIF
- Output
- JPEG shows blocking; AVIF stays smooth
AVIF degrades far more gracefully than JPEG, which is why lower quality settings are usable with it.
Why use it
What the AVIF Converter gives you
The smallest files available
Typically 20–30% below WebP and around half the size of JPEG at matched visual quality.
Degrades gracefully
At aggressive settings AVIF stays smooth where JPEG breaks into visible blocks, so lower quality values remain usable.
Support checked first
Your browser is tested for AVIF encoding before it is offered, rather than silently handing back a PNG.
Transparency and wide colour
AVIF carries an alpha channel and supports high dynamic range, which JPEG cannot.
Runs in your browser
No upload and no account.
Good to know
AVIF Converter limitations
- Not every browser can create AVIF files, though most can display them. The tool checks and tells you.
- Encoding is noticeably slower than JPEG or WebP, especially on large images.
- Support outside browsers — desktop editors, older phones, some content systems — is still incomplete.
- Images are limited to 25 MB each.
Summary
AVIF Converter in short
- AVIF produces the smallest files of any widely-supported image format.
- It handles low quality settings far better than JPEG, so more aggressive compression is usable.
- Encoding is slow and not every browser can create AVIF, though most display it.
- Serve AVIF with a WebP or JPEG fallback for maximum compatibility.
FAQ
AVIF Converter questions
What is AVIF?
An image format derived from the AV1 video codec. It compresses far more efficiently than JPEG or WebP and supports transparency, animation and high dynamic range.
How much smaller is AVIF?
Roughly 20–30% smaller than WebP and around half the size of JPEG at comparable visual quality. Photographs with smooth gradients benefit most.
Which browsers support AVIF?
Chrome, Firefox, Safari and Edge all display AVIF. Creating AVIF in the browser is less universal, which is why this tool tests your browser before offering it as an output.
Why does AVIF take so long to encode?
It uses the AV1 codec's compression, which explores far more possibilities than JPEG to find a smaller result. That work is what buys the size reduction, and it can take seconds per image.
Should I use AVIF or WebP?
WebP is the safer default — nearly as small, much faster, and universally supported for both display and creation. Choose AVIF when file size is the priority and slower encoding is acceptable.
How do I use AVIF on a website safely?
Serve it through a <picture> element with WebP and JPEG sources listed after it. The browser picks the first format it understands, so nobody sees a broken image.
How low can I push AVIF quality?
60–70% is usually enough for photographs, lower than you would accept in JPEG. AVIF's artefacts are far less objectionable, so the usable range extends further down.
Does AVIF support transparency?
Yes, with a full alpha channel, so it can replace transparent PNGs as well as photographic JPEGs.
Does AVIF encoding happen on a server?
No. AVIF encoding is done by your browser's own image pipeline. Nothing is uploaded, so the only limit is your machine's memory rather than an upload quota.
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