I am using Super chache already and wp minify. Not that it seems to matter to pagespeed insight though.
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Other ones belongs to the official Twenty Eleven theme, which seems a bit strange. Surely the official themes should be the optimum ones?
It's worth noting that Google Pagespeed Insights only offers recommendations. You can make many changes to your site, but Google will keep offering recommendations. That doesn't mean that you should absolutely take action and remove all files from your site.
Even if you fix everything, Google will still recommend that you remove your stylesheet, for example. That doesn't mean you should :)
For each recommendation, you'll need to decide whether the feature behind that resource is more important than the performance hit.
For example, Twenty Eleven's stylesheets are needed because they include the basic styles for your site. The only safe way to remove them would be to copy the contents of these files and paste them into your child theme's stylesheet. And while that will work, you really won't win a lot by doing so.
The reason i'm not using jetpacks contact form is because i have not found any captcha solution for that one, do you know of any?
If you use the Akismet plugin on your site, all forms submitted through a Jetpack contact form will go through Akismet to be filtered for Spam. So you won't need your captcha plugin either.
Also, i have seen that my site tries to reach Google fonts, but i have no idea way. As far as i know, i don't use any special font on my site at all....Any idea what can be causing this?
The fonts are mostly likely added by Twenty Eleven. You can remove them by deregistering the function adding the fonts in your child theme's functions.php file.
There is a lot of CSS files that is listed in this section, and i have no idea what to do about them...One of them belongs to Jetpack i believe:
http://craftersu.com/…k/modules/sharedaddy/sharing.css?ver=2.7
That particular file is need for Jetpack's sharing buttons to look the way they look right now. If you were to remove it, your sharing buttons would look like that:
http://i.wpne.ws/TEe2
You'll consequently need to decide whether the sharing buttons are important enough for you to justify the performance hit. If they're not, you can remove them by deactivating the sharing module.