formatsprout.
THE EVERYDAY IMAGE CONVERTER

WebP to AVIF. Image converter

Convert WebP images to AVIF to compare web image size and quality using your own files.

Free to use No signup No uploads
01 — Image workspace All processing stays local

Drop your images here

Or browse your files. A whole batch is welcome.

WebP · Up to 20 filesYou can also paste an image from your clipboard.
THE FINISHING TOUCHES

Make it your own.

Resize (optional)

Proportions locked. Height adjusts automatically.

AVIF can take longer, especially for large images on phones. Your original files stay unchanged.

No uploads. No watermarks.50 MB per file · 40 megapixels max

Your files stay on your device. Always.JPG · PNG · WebP · HEIC · AVIF
BEFORE YOU CONVERT

A few things to know.

WebP is already compressed. Re-encoding can lose detail without saving space; use an original source image when available.

Useful for

  • Evaluate AVIF for existing web images
  • Resize older WebP assets
  • Prepare AVIF copies for a publishing workflow

Transparent backgrounds

AVIF supports alpha. Inspect transparent edges after conversion, especially at lower quality.

Getting the quality right

Compare the downloaded file with the WebP at the same dimensions. Keep WebP if AVIF offers no useful improvement.

LESS FUSS. MORE DONE.

From “wrong format” to ready.

01 /

Bring your images.

Drop up to 20 files, browse your device, or paste from your clipboard. They stay right here.

02 /

Make them fit.

AVIF is already selected. Adjust the quality or dimensions if you need to.

03 /

Take them with you.

Hit convert and save your new images. Download one at a time or grab the whole batch as a ZIP.

A LITTLE TOOL. A SMALLER FOOTPRINT.

Your photos are
your business.

Family photos, work screenshots, half-finished ideas. You shouldn’t have to upload them just to change a file format.

FormatSprout does the conversion inside your browser. Your images and filenames never reach our servers.

How local conversion works
FIND YOUR FORMAT

Another format in mind?

Explore all formats
WebPJPG

A familiar format for attachments, apps, and upload forms.

WebPPNG

Keep transparent backgrounds. Get an editing-friendly file.

HEICAVIF

Give your iPhone photos a format everyone can open.

JPGAVIF

Lighter images for your next website, post, or project.

PNGAVIF

Lighter images for your next website, post, or project.

AVIFWebP

Lighter images for your next website, post, or project.

THE SMALL PRINT, MADE READABLE

Good questions.

A few things you might be wondering.

Read our privacy policy
Is AVIF always smaller than WebP?

No. The source, dimensions, encoder, and quality setting determine the result. The converter shows the actual size difference.

Does animated WebP become animated AVIF?

No. Only a single still frame is exported.

Are my images uploaded?

No. FormatSprout converts images locally in your browser. Your files never reach our servers.

Is FormatSprout free?

Yes. There is no account, watermark, daily quota, or payment required.

Right format. On with your day.

Convert an image