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JPG to WebP

Lighter photos for your blog or shop, made in the browser. Nothing is uploaded.

Drop the photos for your site here

  • Files never leave your device
  • Unlimited · No signup

JPG to WebP in 3 steps

  1. Choose the JPG photos you want to publish.
  2. Click "Convert to WebP" and watch the photos get lighter.
  3. Download the WebP photos (zipped if there are many) and add them to your page.

Why ConvertKoala?

  • Fixes the PageSpeed hint

    "Serve images in next-gen formats" is one of the most common audit warnings. WebP photos answer it.

  • Kinder to mobile visitors

    Smaller photos mean less data and quicker loading on 4G, which matters for shoppers on the go.

  • A whole gallery at once

    Convert every photo from a product shoot or holiday post in a single batch, with no file limit.

  • Unpublished photos stay yours

    Photos for posts that aren’t live yet are processed on your device, not on a stranger’s server.

Frequently asked questions

How much smaller is WebP than JPG?

Google’s own tests found WebP around 25–34% smaller than JPG at similar quality. Your results will vary with the photo and with how strongly the JPG was already compressed.

Does converting a JPG lose quality?

A little. The JPG was already compressed, and WebP at about 92% quality is a second compression step. It is hard to see, but keep your original JPGs in case you need to edit or re-export later.

My photos are 4000 px wide. Is converting enough?

Probably not. A camera-size photo is still heavy in any format. Resize it to the width your site actually displays (often 1200–2000 px) first, then convert to WebP for the biggest saving.

Does WordPress accept WebP?

Yes, since WordPress 5.8. Upload the WebP to the Media Library like any JPG. Most themes and page builders display it without extra plugins.

Why did Safari give me a PNG?

Safari can show WebP but cannot encode it, so the tool returns a PNG instead. For WebP photos, use Chrome, Edge or Firefox on a computer or Android phone.

Will visitors with old browsers see my WebP photos?

Practically everyone will: all current browsers support WebP. Only very old ones, like Internet Explorer, can’t display it.

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