Is code minification necessary with GZIP enabled?

Question

HTML

Tell me, is it necessary to compress the source code of the page to one line if the GZIP type option and caching are already activated on the server?

For example from:

<div>
  <h1>...</h1>
</div>

do: It's just that the source code becomes unreadable, but on the same google.com, the entire code of the page is compressed and looks like one long line.

<div><h1>...</h1></div>

Answer 1

1% gain on average with gzip+minification. I think the game is not worth the candle.