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A painless way to reduce page loading time
I tested the Image Optimizer add-on to see what kind of file savings were possible. It looks like all images will be optimized, at least a modest amount, but poorly optimized JPEG and PNG files are greatly reduced in size.
- A large PNG file with a transparent background was 484KB. After optimizing it was 156KB.
- A medium size JPEG file was 44KB. After optimizing it was 23KB.
The savings will depend on the image and if it is already optimized or semi-optimized.
I can see this add-on being used in combination with the core Image Uploading automatic resize feature. This would address the common problem of users uploading very large, unoptimized images and damaging page load performance.