Source

Select or drop an image file.

Choose imageor drag a file into this panel

Your preview will appear here.

Output

Pick a file to start.

Guide

What this tool is for

JPG to AVIF conversion unlocks dramatically smaller image files without sacrificing visual quality. AVIF, based on the AV1 video codec developed by the Alliance for Open Media, delivers 20-50 percent better compression than JPG and 20 percent better than WebP. It supports HDR, wide color gamut, transparency, and both lossy and lossless modes. For website owners, converting JPG photos to AVIF reduces bandwidth costs, improves page load times, and boosts Core Web Vitals scores. This tool runs entirely in your browser, so your images never leave your device during conversion.

Use this tool when you want to convert JPG photos into the more efficient AVIF format for web delivery, storage optimization, or modern application development.

How to use this tool

A short browser-side flow that keeps the file on the current device.

Select the JPG file from your device or drag it directly into the source panel on the tool page.
Wait for the browser to load the image and display a local preview for verification.
Adjust the AVIF quality slider to balance file size against visual quality using the live preview.

Best use cases

Common jobs where this page saves a repetitive manual step.

Reducing website image file sizes by 30-50 percent for faster page loads and better Core Web Vitals scores.
Optimizing photographic content for web delivery using modern format negotiation with JPG fallbacks.
Decreasing storage requirements for large photo libraries and content management systems.

Output and format notes

Details that help you avoid format or quality mistakes before export.

AVIF encoding requires Chrome 103 or later. Other browsers may not support creating AVIF files through the canvas API.
AVIF files are not universally supported by older image editors and desktop software, so keep the JPG original for compatibility.
The quality slider directly controls AVIF encoding efficiency; very low quality can produce visible blocking artifacts in detailed areas.

JPG to AVIF vs. nearby tools

Different conversion paths and optimization tools serve distinct needs depending on your target format, file size goals, and intended use case.

Use JPG to WebP when you need broader browser support and a simpler implementation path
Use AVIF to JPG when you need to convert AVIF files back to universally compatible JPG format
Use Compress Image when you already have an AVIF but need to reduce its file size further

FAQ

Frequently asked questions

What is AVIF and why convert JPG to it?

AVIF is a next-generation image format based on the AV1 video codec. It typically produces files 20-50 percent smaller than JPG at equivalent visual quality, making it excellent for websites and storage.

Which browsers support AVIF?

Chrome 85 and later, Firefox 93 and later, and Safari 16 and later support AVIF decoding. Encoding through this tool requires Chrome 103 or later. If your browser cannot encode AVIF, try updating Chrome.

Will the AVIF file look better than the JPG?

At the same file size, AVIF generally looks better than JPG because of more advanced compression. At the same quality setting, AVIF produces a much smaller file. You can compare using the preview before downloading.

Does AVIF support transparency?

Yes. AVIF supports alpha transparency, unlike JPG. However, converting from JPG will not add transparency because the source has no alpha channel.

Is my image uploaded to a server during conversion?

No. The entire conversion happens locally in your browser using the canvas API. Your JPG never leaves your device.

Can I adjust the quality of the AVIF output?

Yes. The quality slider controls the AVIF encoding quality. Lower quality produces smaller files; higher quality preserves more detail.

Should I keep the original JPG after converting?

Yes. Keep the JPG as a universally compatible fallback. Use AVIF for web delivery with a JPG fallback for older browsers.

Short paths into the nearest related tasks.