How much smaller is AVIF than JPG?

AVIF is the most efficient mainstream image format available — at the same visual quality it's commonly 30–50% smaller than JPG, and sometimes far more. That makes it ideal for hero images and photo galleries where every kilobyte counts. The trade-off is encoding speed and slightly less universal support than JPG.

Why is AVIF conversion slower than the other tools?

AVIF uses a sophisticated encoder (the same family as the AV1 video codec) that runs as WebAssembly in your browser. That extra computation is what produces such small files, but it takes longer per image than the browser's built-in JPG or PNG encoders — especially for large photos. It all still happens locally, with nothing uploaded.

Do all browsers and apps support AVIF?

Support is strong and growing — current Chrome, Edge, Firefox, and Safari all display AVIF. However, some older browsers, email clients, and design tools don't yet. If you need maximum compatibility, WebP or JPG are safer; reach for AVIF when you control where the image will be shown, like your own website.

Does the quality slider affect AVIF too?

Yes. AVIF is a lossy format here, so the slider trades file size against fidelity. Even at lower settings AVIF tends to look cleaner than JPG at a comparable size, so you can often push the slider down further than you'd dare with JPG and still get a great-looking image.

Can I convert several JPGs to AVIF at once?

Yes. Select or drag multiple .jpg files and they convert as a batch, each with its own download and a 'Download all (.zip)' button. Because AVIF encoding is heavier, files are processed a couple at a time to keep memory in check — everything stays local to your browser.

JPG to AVIF Converter

If you care about how fast your pages load, AVIF is the format to know. Built on the AV1 video codec, it squeezes photographic images smaller than JPG, WebP, or PNG while keeping them looking great. This converter re-encodes your JPGs as AVIF entirely in your browser — the heavy WebAssembly encoder runs on your own machine, and nothing is ever uploaded.

Why AVIF?

Smallest high-quality files — commonly 30–50% lighter than JPG at the same perceived quality, sometimes much more.
Looks clean even when compressed — AVIF holds up at low bitrates far better than JPG, so you can be aggressive with the quality slider.
Modern web ready — perfect for hero images, galleries, and any site where load time and Core Web Vitals matter.

The trade-offs are honest ones: AVIF encoding is slower than the browser’s native JPG/PNG encoders, and support, while strong, isn’t quite universal. If you need an image to open everywhere, WebP or JPG are safer. Reach for AVIF when you control the destination — like your own website.

Private, local, single-threaded

The AVIF encoder is a WebAssembly module that runs inside your browser tab, off the main thread so the page stays responsive. No file is uploaded, stored, or logged. Because the encoder is compute-heavy, batch jobs process a couple of images at a time to keep memory bounded — important on phones — and hand you the results as individual downloads or a single zip.

Tips

Be bold with quality: AVIF stays clean at lower settings, so you can shrink more than with JPG.
Mind the speed: large photos take longer to encode than a quick JPG conversion — that’s normal.
Know your audience: use AVIF where you control display; choose WebP/JPG for maximum reach.

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JPG to AVIF Converter

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