Resize to the rendered dimensions, convert at a measured quality, keep width and height attributes in HTML, and test the real page rather than judging bytes alone.
Do it here
JPG to WebP Converter
WebP often stores photographic content in fewer bytes while keeping browser compatibility.
Drop an image here
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Processed securely on our server. Files auto-delete within four hours.
Resize before format conversion
A modern codec cannot fix an image that ships four times more pixels than the layout needs. Produce responsive dimensions first, then compare the WebP result with the original JPEG at the displayed size.
Use the right HTML delivery
A picture element can offer modern and fallback sources. Explicit width and height reserve layout space, while srcset helps the browser choose a suitable pixel width for the screen.
Measure the whole experience
File bytes matter, but so do cache headers, loading priority, lazy loading below the fold, and server response time. Check the deployed page with field data and a lab audit.