formatsprout.
THE EVERYDAY IMAGE CONVERTER

JPG to AVIF. Image converter

Convert JPG photos to AVIF for web delivery and compare the resulting size before publishing.

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.

JPG · 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.

Re-encoding a JPG can discard more detail. AVIF may be smaller, but it cannot restore the original camera image.

Useful for

  • Optimize a photo-heavy landing page
  • Prepare AVIF alternatives for a website
  • Compare modern compression on product photos

Transparent backgrounds

JPG has no alpha channel, so the AVIF remains opaque.

Getting the quality right

Inspect fine textures at full size. Do not assume the same quality percentage is equivalent between JPG, WebP, and AVIF.

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
JPGPNG

Keep transparent backgrounds. Get an editing-friendly file.

JPGWebP

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

HEICAVIF

Give your iPhone photos a format everyone can open.

PNGAVIF

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

WebPAVIF

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

AVIFJPG

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

THE SMALL PRINT, MADE READABLE

Good questions.

A few things you might be wondering.

Read our privacy policy
Should I replace every JPG with AVIF?

Check support in your destination and compare the results first. Keep JPG when your upload form or editor does not accept AVIF.

Can I resize and convert together?

Yes. Set a width before converting to reduce both pixel count and encoding work.

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