JPG to AVIF Converter

Re-encode JPG photos as AVIF for the smallest files of any mainstream format — often around half the size at comparable quality.

Why convert JPG to AVIF?

AVIF uses the AV1 video codec's intra-frame compression, which is markedly more efficient than the decades-old JPEG algorithm. For many photographs it reaches similar visible quality at roughly half the file size.

It also handles things JPG simply cannot: an alpha channel for transparency, wide colour gamut, and high dynamic range. If you are building a modern, performance-focused site, AVIF is the strongest option available.

Transparency: JPG carries no transparency, but AVIF supports it — so the converted file is ready for cut-out work without another format change.

Diagram showing a JPG image being converted to AVIF with QuickConvertPDF

What you get converting JPG to AVIF

The smallest mainstream format

Frequently around 50% smaller than JPG, and meaningfully smaller than WebP too.

Cleaner at low bitrates

Where JPG shows blocking and banding, AVIF degrades far more gracefully.

Wide colour and HDR

AVIF can carry richer colour information than JPG's 8-bit sRGB ceiling.

Transparency included

Unlike JPG, AVIF supports an alpha channel without switching to another format.

What to expect: Expect roughly half the size of the original JPG at comparable visible quality, though results vary with image content. AVIF encoding is more computationally demanding, so conversion takes a little longer.

When to convert JPG to AVIF

Squeezing maximum performance out of a mobile-first site
Serving large hero images without a large download
Modern sites using picture elements with a JPG fallback
Archiving photo libraries at lower storage cost

JPG vs AVIF

	JPG	AVIF
Compression	Lossy	Lossy
Transparency	No	Yes
Best for	the universal photo format, supported by essentially every device, browser and printer	the newest of the mainstream formats, offering the smallest files plus transparency and wide colour

JPG to AVIF — frequently asked questions

For raw compression, generally yes — AVIF files are usually smaller than WebP at similar quality. WebP still has slightly broader support in older software, so many sites offer both.

Chrome, Firefox, Edge and Safari all support AVIF in current versions. Older browsers and some desktop apps do not, so serve a JPG or WebP fallback if you need to reach them.

AVIF encoding does considerably more work than JPEG encoding. The extra second or two buys you a much smaller file.

No. Quality already lost to the original JPG compression cannot be recovered. AVIF simply stores what is left far more efficiently.

Often not. Print workflows and older desktop applications frequently do not read AVIF. Convert back to JPG for those.

Yes, it has a full alpha channel, along with wide colour gamut and HDR support.

Related tools

AVIF to JPG JPG to WebP PNG to AVIF Compress Image

Who benefits from converting JPG to AVIF?

These are common examples; the right workflow depends on the file, required output, and your organization’s handling rules.

Front-end developers

Test highly compressed modern images in a browser-focused delivery workflow. A typical use is squeezing maximum performance out of a mobile-first site.