Best way to save JPG images to scale up in web (Css) without losing quality in Photoshop?

Any ideas how to save a JPG (or any similar – small (KB) size Format) image with the size of 300px/300px in Photoshop – to scale it up to 600px/600px with using css in a webpage, without loosing “Quality”? I try to figure out wich settings are doing well… And how I can save the images in small sizes (KB)

1. Saving JPG in Photoshop in 300x300px

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2. Scaling up with CSS to 600 x 600px

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There is no way to scale up an image without losing quality.

In that case, you should scale your image down.

So instead of saving it as 300×300, save it as 600×600. Search for good optimization / compression methods, maybe use PNG instead (because sometimes a PNG-8 compressed can be smaller than a JPEG). You probably need to use a different tool to optimize the PNG file (search the web for “PNG image optimizer”)

Better yet, I’d save it as a size in between 300px and 600px, so it’s both smaller than 600 and has better quality than 300. You might need to try a few different sizes to find the right balance between quality / file size.

Source : Link , Question Author : NewUser , Answer Author : Luciano

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