JPG to WEBP Converter

JPG’s compression scheme dates to 1992 and works in fixed 8×8 pixel blocks, which is why it shows blocky artefacts and haloing around sharp edges once you push quality down. WEBP uses prediction techniques adapted from video compression — modelling how a block of pixels relates to its neighbours before encoding — which lets it represent the same visual detail in noticeably fewer bytes.

On a typical photograph, a 2.4 MB JPG at quality 90 converts to a WEBP of roughly 1.4–1.7 MB at a matching quality setting, a saving in the region of 30–40%, with the two images looking essentially identical side by side at normal viewing size.

The difference compounds fastest on pages carrying many photos — a product gallery, a photography portfolio, a blog post with a dozen inline images — where shaving a third off every file adds up to a page that loads noticeably faster, particularly on a mobile connection. For a single photo you are sending by email or message, the saving is real but less consequential, since either format sends in a few seconds either way.

WEBP also handles flat colour and gradients with less banding than JPG at low quality settings, which shows up specifically in screenshots or graphics that include some photographic content mixed with solid colour.

Almost nothing, for most practical purposes. WEBP has near-universal support in current browsers — Chrome, Firefox, Safari and Edge have all handled it natively for several years — so a website image converted to WEBP will display correctly for nearly every visitor. The remaining gap is outside browsers: certain older desktop viewers, some print workflows, and a handful of apps still expect a JPG specifically, so keep the original JPG on hand if the file needs to leave the browser environment.

The JPG is decoded and re-encoded to WEBP in your browser, so nothing is uploaded and no copy is kept once you close the page. Add a whole folder of product photos or blog images and each converts separately at the quality you set, downloadable individually or as a ZIP — useful for preparing a batch of images for a website in one sitting rather than one at a time.