JPG to WebP Converter - Shrink Photos for the Web

This conversion has one job: making a web page lighter. WebP compresses photographs noticeably better than JPG at the same visible quality, and every browser in current use can display it. If your site is slow because of images, this is usually the single change with the biggest effect — but it only makes sense when the images are actually going onto a website.

How to convert JPG to WebP

1. 1 Add the .jpg or .jpeg file you want to publish on your site.
2. 2 Leave the quality at 90 for a safe result, or lower it to 80 if page speed matters more.
3. 3 Convert and check the size saving shown under the preview before downloading.

How much you actually save

For a typical photograph at the same perceived quality, WebP lands 25–35% below the JPG. On a page with twenty product photos that is often the difference between a sluggish gallery and an instant one, and it shows up directly in Core Web Vitals. The saving is smaller for images that were already heavily compressed, because there is less redundancy left to squeeze out.

You are recompressing an already lossy file

A JPG has already thrown away detail once. Encoding it as WebP throws away a little more, and unlike the first round the encoder is now working from artefacts rather than from the original scene. In practice this is invisible at quality 85–90, which is why the slider starts at 90. Below 75 you may notice softening in fine texture — hair, grass, fabric — that the original JPG still had.

When not to bother

Do not convert your photo library. WebP is a delivery format, not an archive format: you would spend hours re-encoding originals, lose a sliver of quality on each one, and end up with files that some desktop programs still cannot open. The same goes for photos you are e-mailing, printing or handing to a client. Convert what goes on the website, keep the JPG for everything else.