What's the difference between JPG and AVIF?

JPG (also written JPEG) is the workhorse lossy format for photographs. AVIF is the newest mainstream image format, built on top of the AV1 video codec.

Does the quality drop converting between two lossy formats?

Slightly. Each lossy re-encoding discards a small amount of detail. For a single conversion the difference is usually imperceptible at sensible quality settings. Avoid repeated round-trips through lossy formats.

What quality should I pick?

For AVIF, quality 75-85 is the sweet spot — small files with no visible difference from the original. Lower than 60 starts to show artifacts. Higher than 90 mostly just makes the file bigger.

Why convert away from JPG?

JPG (also written JPEG) is the workhorse lossy format for photographs. Where it falls down: anything that needs transparency (use PNG or WebP); screenshots and text-heavy images (compression artifacts around sharp edges); repeated re-saving — each save loses more detail. AVIF addresses that for most workflows.

When is AVIF the right format?

AVIF is a good choice for: hero images and other content where every byte matters; build-time image pipelines that can absorb the encoding cost; photos with smooth gradients (the AV1 codec excels here). It is a poor choice when on-the-fly conversion where the user is waiting (slow encode).

Anything surprising about JPG or AVIF?

JPG quality 80–85 is usually visually indistinguishable from the original. Don't ship q100. And on the AVIF side: AVIF encoding is single-threaded by default — large images can take 5–10 seconds in browser.

Does this work on mobile?

Yes. The drop zone falls back to your phone's file picker, and conversions run on-device just like desktop. Large files may be slower on mobile due to CPU and memory constraints, but the workflow is identical.

What's the maximum file size?

No hard limit — the browser handles it. Files under 50MB convert in a few seconds. Larger files work but may take longer as the browser allocates memory. If you hit issues, batch in smaller groups.

Convert JPG to AVIF

Convert JPG to AVIF, typically the smallest of the modern web formats. Note that JPG has already discarded detail, so this won't recover it — it just repackages what's left more efficiently. Free, in your browser.

Drop images to convert

PNG, JPG, WebP, AVIF, JPEG XL, TIFF, BMP, GIF, SVG, HDR, ICO — any combination

Files stay on your device. Open DevTools' Network tab to verify.

Output format

AVIF

Quality82%

Overview

Why convert JPG to AVIF

AVIF files are typically much smaller than JPG at equivalent quality — usually the main reason to make this conversion. Smaller files mean faster page loads, smaller email attachments, and less storage. Note that JPG has already discarded detail, so this won't recover it — it just repackages what's left more efficiently.

Comparison

JPG vs AVIF: what actually differs

JPG compared with AVIF across encoding, fidelity, file size and support.
Attribute	JPG	AVIF
Compression	Lossy	Lossy
Transparency	No	Yes
Animation	No	Yes
Typical file size	Medium	Small
Browser support	Universally supported. It's been there since the first browsers.	Supported in Chrome, Firefox, Safari 16+, and Edge. Pre-2022 devices may not decode it.

How to

How to convert JPG to AVIF

01
Drop your JPG files
Drag one or more JPG files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.
02
Convert in your browser
convert.now decodes each JPG and re-encodes it as AVIF via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.
03
Download the result
Download a single AVIF file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

Why here

Why convert.now

Private
Files stay in your browser. No upload step. Nothing for anyone to see.
Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
Free
No ads. No file-count limit. No sign-up wall. Just the converter.

FAQ

JPG to AVIF: common questions

No. The conversion from JPG to AVIF runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

Related JPG converters

Last updated 27 August 2026

Why convert JPG to AVIF

JPG vs AVIF: what actually differs

How to convert JPG to AVIF

Drop your JPG files

Convert in your browser

Download the result

Why convert.now

JPG to AVIF: common questions

Related JPG converters