Convert images to AVIF

AVIF is a recent image format based on AV1, a video technology developed by a group of large tech companies. Its main strength is efficiency: for the same visual quality, an AVIF image is often lighter than a WebP, and much lighter than a JPG.

AVIF also supports transparency and a wide range of colours. It is particularly good at keeping smooth gradients and skies clean at small sizes, where JPG tends to show blocks.

All recent versions of Chrome, Firefox, Safari and Edge can display AVIF images.

The main reason is website speed. Images often make up most of a page’s weight. Switching them to AVIF can make pages noticeably lighter, which helps visitors on mobile networks and contributes to a better experience overall.

Typical uses:

• large photos on a homepage or a portfolio;
• product images in an online shop;
• illustrations in blog articles;
• images with transparency, as a lighter alternative to PNG.

Combine AVIF with sensible dimensions for the best result: set a maximum width in Plume so the image is not larger than it will ever be displayed.

• AVIF: the lightest files, very good quality at small sizes. Supported by modern browsers, but some older programs and services do not open it yet.
• WebP: a little heavier than AVIF, but supported almost everywhere on the web. A safe all-round choice. See JPG to WebP.
• JPG: heavier, but opens absolutely everywhere, including e-mail clients, office software and forms.

For a website you control, AVIF is a good choice. For files you send to other people, JPG remains the most practical.

AVIF encoding takes more computing work than JPG. Since Plume does everything on your device, converting large images can take a few seconds each, especially on a phone or an older computer. This is normal: the effort goes into making the file as small as possible.

Check that the place where you will use the image accepts AVIF. Many website builders do, but some upload forms, social networks and editing tools still prefer JPG or PNG. If you receive an AVIF that you cannot open, the image converter can turn it back into JPG or PNG.

iPhone HEIC photos are accepted too: Plume reads them and converts them straight to AVIF.

Unlike most online tools that upload your files, Plume converts images to AVIF inside your browser. Your files never leave your device, and conversion keeps working offline once the page is loaded. EXIF metadata, including GPS location, is removed by default.

No account, no watermark, no daily limit. Convert a whole folder and download the result as a ZIP.

Once your images are converted, a few practical points:

• Upload the .avif files like any other image. Many content systems and website builders accept them; if yours refuses, WebP is the closest alternative.
• Keep a fallback if needed. Web developers can serve AVIF with a JPG or WebP backup for very old browsers, using the HTML picture element.
• Give images their real display size. An AVIF that is 4000 pixels wide is still heavier than it needs to be if it is shown at 1200 pixels.
• Keep your originals. Store the original JPG or PNG files so you can produce other sizes or formats later.

Try a few images first with the Balanced preset and look at them on a phone and a computer. AVIF often stays clean at settings where JPG would show visible artefacts, so you can be a little bolder with the size.