WebP: A modern file format developed by Google for smaller file sizes (both lossy and lossless compression) and support for transparent backgrounds. Downside is this comes with much larger file sizes than your typical JPEG, not recommended for most images. PNG: A lossless compression format that's great for higher resolution and transparent images such as logos and important site elements. JPEG: A lossy compression format that usually results in lower quality images, with the upside of significantly smaller file sizes when comparing with PNG. There are many image types you'll run across online, but the 3 most common ones are: That's a significant reduction in loading time for your users, especially if there's multiple images on the page. Two of the files are 77% smaller files and the least effective one is still 49% smaller. Take a look at the differences in these 3 images I just compressed: Now these aren't small file size reductions, they're massive. The downside is you'll usually have larger file sizes, as there's not as much that can be done without deleting data from the image, but the quality will be better. Lossless, on the other hand, can be completely reversed as nothing is removed. The major downside is it can't be reversed, so keep a backup of the original image. This usually results in a slightly lower quality image, though with the right level of compression it shouldn't be overly noticeable. Lossy usually results in smaller file sizes as it removes data from the images to make it smaller. 
Image compression is the process used to reduce the file size of images without resizing the image.
Image optimization is the process of reducing these file sizes through methods such as changing file format, resizing, and image compression while best maintaining the image quality. High resolution images come in large file sizes, which causes them to load slowly. The most important part here is speed optimization.
Image optimization is the process of modifying images so they load faster and can be understood by robots. In this guide, we'll cover how to optimise your images for Shopify to maximise page speed, conversions, and search traffic. Images are usually the biggest factor towards page speed, which can influence both traffic and conversions if it's slow.īeyond that, there's image search, which is another potentially big traffic source for your business. Did you know that images can directly affect the traffic and conversions of your website?
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