diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3fa2b1c..033d353 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+### v0.1.3 - 2023.7.22
+
+- feat: add 'Commands::Extract' -- Extract compressed or archived files
+- feat: add 'Commands::Image' -- Convert the specified image to the specified format and/or size
+- docs: update README.md & CHANGELOG.md
+- docs: sub-docs for each command
+
 ### v0.1.2 - 2023.7.17
 
 - refactor: remove 'Commands::Doctor', add 'Commands::Doc'
diff --git a/Cargo.lock b/Cargo.lock
index 5f121b1..1257a36 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1921,7 +1921,7 @@ dependencies = [
 
 [[package]]
 name = "rstool"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "clap",
  "flate2",
diff --git a/Cargo.toml b/Cargo.toml
index 787e09f..8f67e44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rstool"
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 authors = ["lopo<lopo@zju.edu.cn>"]
 description = "a cli tools written in rust"
diff --git a/README.md b/README.md
index 929f0e6..de6fa9c 100644
--- a/README.md
+++ b/README.md
@@ -6,30 +6,35 @@
 ![cli](https://img.shields.io/badge/wasm-in--progress-yellow)
 ![License](https://img.shields.io/github/license/lopo12123/rstool)
 
-A collection of simple and commonly used tools, available on windows, will soon support node-addon and wasm
+A collection of simple and commonly used tools, available
+as [cli](https://en.wikipedia.org/wiki/Command-line_interface), will soon
+support [node-addon](https://nodejs.org/api/addons.html) and [wasm](https://webassembly.org/).
 
 ### Installation
 
 Get [`rstool.exe`](https://github.com/lopo12123/rstool/releases/latest) from the release page.  
 You can also clone this project directly if you want to build or modify it yourself.
 
-I recommend that you add the path of `rstool.exe` to the environment variable after downloading.
-so that it can be used directly in any directory.
-
 ### Usage
 
 ```
-Usage: rstool.exe <COMMAND>                                       
-                                                                  
-Commands:                                                         
-  doc    Open the document in the browser (default or specified)  
-  hash   Get the digest of the specified source                   
-  serve  Start a static resource server in the specified directory
-  help   Print this message or the help of the given subcommand(s)
-                                                                  
-Options:                                                          
-  -h, --help     Print help                                       
-  -V, --version  Print version  
+$rstool.exe --help
+
+a cli tools written in rust
+
+Usage: rstool.exe <COMMAND>
+
+Commands:
+  doc      Open the document in the default browser
+  extract  Extract compressed or archived files
+  hash     Get the digest of the specified source
+  image    Convert the specified image to the specified format and/or size  (simple show the metadata of the image if both format and size are omitted)
+  serve    Start a static resource server in the specified directory
+  help     Print this message or the help of the given subcommand(s)
+
+Options:
+  -h, --help     Print help
+  -V, --version  Print version
 ```
 
 ### Support Matrix
@@ -39,6 +44,7 @@ Options:
 | `Doc`     | ✅   | ⏳          | ⏳    | [Commands::doc](./src/doc/README.md)         |
 | `Extract` | ✅   | ⏳          | ⏳    | [Commands::extract](./src/extract/README.md) |
 | `Hash`    | ✅   | ⏳          | ⏳    | [Commands::hash](./src/hash/README.md)       |
+| `Image`   | ✅   | ⏳          | ⏳    | [Commands::image](./src/image/README.md)     |
 | `Serve`   | ✅   | ⏳          | ⏳    | [Commands::serve](./src/serve/README.md)     |
 | ...       | ... | ...        | ...  ||
 
@@ -53,4 +59,4 @@ see at [CHANGELOG.md](./CHANGELOG.md)
 
 ---
 
-Last modified on **2023-07-20**
\ No newline at end of file
+Last modified on **2023-07-22**
\ No newline at end of file