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JPG and PNG to WebP

Are big photos slowing down your website or blog? Convert JPG and PNG to WebP here. It's usually smaller at similar quality, and the transparent background of a PNG stays transparent.

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Drop images here or

When PageSpeed Insights says the images on your site are too heavy, one of its suggestions is usually a modern format. Drop your photos and graphics here, set the quality and download WebP files ready to upload to WordPress, Shopify or another CMS. The rest of the page covers where WebP works, where it doesn't and how to check whether images really slow your site down.

How to convert JPG and PNG to WebP

  1. 1

    Add your images

    Drag JPG and PNG files onto the page or choose them with the button. You can mix both formats.

  2. 2

    Set the quality

    The default of 80 suits most photos on a website. Try higher for a large hero image, lower for small thumbnails.

  3. 3

    Start the conversion

    Click Convert to WebP. Transparent parts of PNG images stay transparent.

  4. 4

    Download the WebP files

    One image downloads directly, several in one ZIP, ready to upload to your site.

Where not to use WebP

Keep WebP for your own website. Google Business Profile accepts only JPG or PNG, and a LinkedIn profile photo must be PNG or JPG. For email, forms and listings, send JPG instead.

WebP for WordPress and Shopify

WordPress has accepted WebP images since version 5.8, as long as your hosting supports them too. You upload them to the Media Library just like JPG. Images with a transparent background, logos for example, keep their transparency in WebP.

Shopify accepts WebP for store images as well, alongside JPEG, PNG, GIF and HEIC, with a limit of 20 MB and 20 megapixels per image. On other store platforms, check the upload help first, because some convert images to WebP for visitors on their own.

How to check whether images slow down your site

Enter your page address in Google's PageSpeed Insights. If images are needlessly large, the results show an Improve image delivery insight. It may suggest a modern format such as WebP or AVIF, or stronger compression.

Dimensions matter as much as format: a photo straight from a phone is usually far too big for a website. Shrink it to Full HD with Compress image, where you can also turn on Save as WebP in the same step.

Privacy

Images are processed in your browser and never uploaded to a server. Some tools remember your settings on this device, and the files you download stay on it.

FAQ

Which WebP quality should I use for a website?
Start with the default of 80, which suits most photos. For a large hero photo where detail matters, try a higher value. Small gallery thumbnails can go lower. Compare the result with the original at the size it will actually appear on the page.

Is WebP always smaller than JPG and PNG?
Mostly, but not always. A photo that was already heavily compressed as JPG may shrink only a little. You see the result size after converting, so you can tell right away whether the switch was worth it for that image.

Do all browsers support WebP?
All current major browsers do. Safari has shown WebP since version 14, so iPhones with an up-to-date system display WebP images on websites without trouble, and you don't need to prepare JPG fallbacks for them.

Does WebP keep transparency?
Yes. Transparent and semi-transparent parts of a PNG stay transparent in the WebP, so logos and icons can sit on any background on your site. JPG images have no transparency, so they convert as solid images.

Will converting to WebP lose quality?
WebP is saved lossy here, but at the default quality of 80 the difference from the original is usually hard to spot on a web page. If an image looks soft, convert it again from the original at a higher quality.

Can I convert WebP back to JPG?
Yes, on the WebP to JPG page. Each lossy save lowers the quality a little, though, so keep your original JPG and PNG files. You can create a new version from them at any time.

Can I convert a whole gallery at once?
Yes. Select all the JPG and PNG images at once, mixed if you like. Each one is saved as WebP at the same quality and you download them in one ZIP, with the original names and a .webp extension.

Do I need to sign up, and are my images uploaded anywhere?
No and no. Converting to WebP is free with no sign-up, and images are processed right in your browser without ever going to a server. That's handy for product photos that aren't public yet.

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