While testing my site`s speed I am getting 2 must fix suggestions

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Ritu Ahuja: Hi everyone. While testing my site's speed I am getting 2 must fix suggestions :
  1. Optimize images
  2. Eliminate render blocking javascript and CSS in above the fold content.
  How to fix these. It seems quiet technical. I will appreciate any help. :)
• 
  Mach Page Speed: What type of site you have?
• 
  SEMXE: hi +Ritu Ahuja, with images, try to use compressed images as they load quickly... there various tools available that you can make use of to compress your images without losing out on quality. ;
  2. With javascripts, it might be possible that you are making use of too many javascript files for various issues and uses, need to minimize that... ;
  share your url for details...
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  Edwin Jonk: From the expert panel in this weeks SEO Questions hangout on air on 00:59:38 into the YouTube video: https://dumbseoquestions.com/q/while_testing_my_sites_speed_i_am_getting_2_must_fix_suggestions +Ritu Ahuja
  
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  Ritu Ahuja: +Mach Page Speed I am a food blogger and my site is about recipes with lots of images
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  Ritu Ahuja: +SEMXE my site's URL is http://scrumptiousyummyrecipe.blogspot.in.
  Can you share where I can find the tools to compress the images without loosing on quality. Thanks. :)
• 
  Ritu Ahuja: Thanks +Edwin Jonk. I will check it out. Thanks for your help. :)
• 
  Mach Page Speed: +Ritu Ahuja ;
  lol...I was referring to type like wordpress, straight html, etc.
  
  run your site on webpagetest.org
  
  your biggest problems are your images are being resized using the code and your users are feeling all those javascript calls...wow! ;
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  Ritu Ahuja: +Mach Page Speed lol. I am on blogger. Thanks. I am gonna try this tool. And can you elaborate a little about this JavaScript code, I don't know much about it. Thanks for your help and info. :)
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  SEMXE: +Ritu Ahuja ;you can download this tool, its free and u can crop images as per required size, no compromise to quality - http://www.photoscape.org/ps/main/download.php ;
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  Ritu Ahuja: Thanks a lot +SEMXE. :)