Image checks
Julia Voortman avatar
Written by Julia Voortman
Updated over a week ago

Images should be optimized to load quickly. This means choosing the most appropriate file format and settings to compress the file.

Images often account for most of the size of a web page. As a result optimizing images can often yield some of the largest performance improvements.

As a general rule, images comprised of flat colour (e.g. logos) should be saved as PNG or SVG files. Photographs should be JPEG images set to around 85% compression, which offers substantial size savings at a minimal loss of detail.

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