Compress image size

docs/content/_index.md

@@ -63,6 +63,9 @@ prefix one more **!** to open [docs.rs](https://docs.rs) page instead [crates.io
 
 # Search Rust official book chapters
 
+You can search all of Rust book chapters on your address bar too! 
+The result will show the title of the related page, parent chapter, and grandparent chapter.
+
 ![IMG](/search-book.png)
 
 # Offline mode, search local Rust docs
@@ -73,7 +76,11 @@ However, please check the [Caveats](/how-it-works/#caveats) if you are a Firefox
 
 ![GIF](/offline-mode.gif)
 
-# Display Features flag on docs.rs
+# Display Feature Flags in docs.rs page
+
+Feature flags are such a kind of crucial property we would involve in when we gain insight into a crate. 
+However, docs.rs don't display the crate's feature flags, which is inconvenient. 
+So Rust Search Extension fills the gap.
 
 ![IMG](/feature-flags.png)
 
@@ -88,4 +95,8 @@ Those commands including but not limited to:
 - **:book** - Show all Rust official books. 
 - **:stable** - Show stable Rust scheduled release date in the next year. 
 
-![IMG](/command-system.gif)
+![IMG](/command-system.gif)
+
+# Page down/up easily
+
+You can press `space` after the keyword, then increase or decrease the number of **-** (hyphen) to page down or page up.

docs/content/changelog.md

@@ -6,7 +6,7 @@ weight = 2
 # v0.8 - 2020-02-25
 
 - Bump crates index number from top 10K to top 20K
-- Display crate's **Features flags** in [docs.rs](https://docs.rs) page
+- Support display crate's **Feature flags** in [docs.rs](https://docs.rs) page
 - Support prefix **!!** (double exclamation mark) to search crates with [docs.rs](https://docs.rs) url
 - Support prefix **%** (percent mark) to search Rust official book chapters
 - Add nice features by introducing the command system
@@ -14,7 +14,7 @@ weight = 2
     - Add `:book` command to show all Rust official books
     - Add `:stable` command to show stable Rust scheduled release date in the next year
     - Add `:yet` command to show all **Are We Yet** websites
-- Support page down the result with page-tuner **-** (hyphen or minus)
+- Support page down the result with page-tuner **-** (hyphen)
 
 # v0.7 - 2020-02-04
 

docs/static/chrome.svg

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