Does converting JPG to AVIF improve the image quality?

No. Both formats are lossy, so every re-save shaves off a little more detail. Convert once from the original wherever you can.

What happens to transparency?

There is nothing to preserve: JPG has no transparency, so this does not come up.

Is there a file size limit?

No limit that we impose. The only ceiling is your device's memory, so a very large photo or a long recording may take a few seconds.

Are my files uploaded anywhere?

No. The conversion runs inside this browser tab, so the file never leaves your device — go offline once the page has loaded and keep converting.

JPG to AVIF converter

Convert JPG files to AVIF right in your browser. Nothing is uploaded, there is no sign-up, and there is no file limit.

Runs on your device
No upload, no queue
Batch + ZIP download

Drop files here, or click to choose

Supports PNG, JPG, WEBP, AVIF, BMP, GIF, SVG, HEIC, TIFF and ICO — and writes GIF, TIFF and PDF too. Files stay on your device.

Convert to

Max width (px, optional)

Quality

How to convert JPG to AVIF

Drop your JPG file onto the box above, or click it to browse.
Choose AVIF as the output format.
Press convert, then download the result.

JPG vs AVIF

JPG works well for photographs and email attachments. AVIF works well for modern sites squeezing every kilobyte. The table below compares the two on the things that usually decide the choice.

	JPG	AVIF
Compression	Lossy	Lossy
Transparency	No	Yes
Best for	photographs and email attachments	modern sites squeezing every kilobyte

Questions about JPG to AVIF

Does converting JPG to AVIF improve the image quality?: No. Both formats are lossy, so every re-save shaves off a little more detail. Convert once from the original wherever you can.
What happens to transparency?: There is nothing to preserve: JPG has no transparency, so this does not come up.
Is there a file size limit?: No limit that we impose. The only ceiling is your device's memory, so a very large photo or a long recording may take a few seconds.
Are my files uploaded anywhere?: No. The conversion runs inside this browser tab, so the file never leaves your device — go offline once the page has loaded and keep converting.

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