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Isn't this literally getComputedStyle[1]? Chrome devtools already has a 'computed' section which shows the same thing. What additional functionality does this provide that I'm missing?

[1] https://developer.mozilla.org/en-US/docs/Web/API/Window/getC...

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Not identical, just similar. getComputedStyle gets the default styling of the browser too, and also some properties that are used just for rendering.

Besides that, you'd have to use the console for each element you want. With CSS Scan you just have to hover it.

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