feat(speed): improve loading speed of static resource

assets/lib/forkawesome/_core.scss

@@ -8,5 +8,4 @@
   text-rendering: auto; // optimizelegibility throws things off #1094
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
-
 }

assets/lib/forkawesome/_path.scss

@@ -12,4 +12,5 @@
 //  src: url('#{$fa-font-path}/ForkAwesome.otf') format('opentype'); // used when developing fonts
   font-weight: normal;
   font-style: normal;
+  font-display: swap;
 }

assets/lib/iconfont/iconfont.css

@@ -5,6 +5,7 @@
   url('iconfont.woff?t=1581963134625') format('woff'),
   url('iconfont.ttf?t=1581963134625') format('truetype'), /* chrome, firefox, opera, Safari, Android, iOS 4.2+ */
   url('iconfont.svg?t=1581963134625#loveit') format('svg'); /* iOS 4.1- */
+  font-display: swap;
 }
 
 .loveit {

exampleSite/content/posts/theme-documentation-content.en.md

@@ -98,7 +98,7 @@ comment: true
 
 **LoveIt** theme uses the summary of the content to display abstract information in the home page. Hugo can generate summaries of your content.
 
-![Summary Preview](/images/theme-documentation-content/summary.png "Summary Preview")
+![Summary Preview](/images/theme-documentation-content/summary.jpg "Summary Preview")
 
 ### Automatic Summary Splitting
 

exampleSite/content/posts/theme-documentation-content.fr.md

@@ -103,7 +103,7 @@ comment: true
 
 **LoveIt** theme uses the summary of the content to display abstract information in the home page. Hugo can generate summaries of your content.
 
-![Summary Preview](/images/theme-documentation-content/summary.png "Summary Preview")
+![Summary Preview](/images/theme-documentation-content/summary.jpg "Summary Preview")
 
 ### Automatic Summary Splitting
 

exampleSite/content/posts/theme-documentation-content.zh-cn.md

@@ -98,7 +98,7 @@ comment: true
 
 **LoveIt** 主题使用内容摘要在主页中显示大致文章信息。Hugo 支持生成文章的摘要.
 
-![文章摘要预览](/images/theme-documentation-content/summary.png "文章摘要预览")
+![文章摘要预览](/images/theme-documentation-content/summary.jpg "文章摘要预览")
 
 ### 自动摘要拆分