The cover image on this page is about 20 KB. The file I made was 70 KB.
That is three times bigger than it needs to be — for a file whose only job is to load. This happens a lot. You make a PNG, you know it is too big, but making it smaller means a website, an upload, a download, and a manual swap. Four steps for a file you already finished. So you skip it and ship the big one.
tiny makes an image smaller with one instruction. It sends the file to TinyPNG, replaces the original with the smaller version, and shows the result:
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