This original image was uploaded at 3,434 × 2,447 pixels straight from my phone. That’s alright for a 4k monitor with a fast connection, but way too big for a typical HD monitor.
To optimize the image, Optimole first compresses files in the efficient WebP format which is about 25% smaller than typical JPEG files.
Then, Optimole re-sizes the image as needed to exactly fit the user’s viewport, meaning it fits the image to each user’s display regardless if they are using a TV, monitor, tablet, or phone.
Between more efficient compression and on-the-fly re-sizing, users get just what what they need, quickly.
At Optimole’s medium compression setting, this full-width image on a HD desktop display is just 161 KB — a whopping 92% decrease from the original JPEG file size.