diff --git a/README.md b/README.md
index 5930207..1417b04 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,23 @@
-An easy-to-use web interface for downloading bittorrents, videos from twitter, youtube and the likes
+An easy-to-use web interface for Aria2 and youtube-dl
 
-- built-in torrent search
-- Start and stop Aria2 process, manage Aria2 from the web;
-- Download videos from youtube, twitter and other sites;
- <img width="1057" alt="nc1" src="https://user-images.githubusercontent.com/3911975/132008248-dbb6036e-e3c2-4e5c-9274-d2b1ae091373.png">
- <img width="890" alt="nc2" src="https://user-images.githubusercontent.com/3911975/132008308-dec2a7ba-4387-441e-9ded-538d61fbccf0.png">
- <img width="287" alt="nc3" src="https://user-images.githubusercontent.com/3911975/132008501-980fafd4-90a0-4a1c-937e-ecf5144202fd.png">
+- Search for torrents within the app from mutiple BT sites
+- Control Aria2 and manage download tasks from the web;
+- Harnessing the power of youtube-dl to download videos from 700+ video sites(youtube,youku,dailymotion,twitter,facebook and the likes;
+<img width="800" alt="nc2" src="https://user-images.githubusercontent.com/3911975/132008308-dec2a7ba-4387-441e-9ded-538d61fbccf0.png">
+<img width="800" alt="nc4" src="https://user-images.githubusercontent.com/3911975/142444998-54dd54a6-0c8e-4d49-8188-270964a99c50.png">
+<img width="800" alt="nc5" src="https://user-images.githubusercontent.com/3911975/142445020-27ec389a-5437-4d28-acc0-5e757fd6897d.png">
+
+#### How to build front-end code
+
+NPM 7.0+ and node 14.0.0+ are required to build front-end scripts
+
+```bash
+#start to build
+npm run build
+
+#installing php dependencies
+composer install
+```
+
+#### Nextcloud App homepage
+https://apps.nextcloud.com/apps/ncdownloader
\ No newline at end of file
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 41971ef..9865244 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -3,8 +3,11 @@
     <id>ncdownloader</id>
     <name>NCDownloader</name>
     <summary>Aria2 and youtube-dl web gui for nextcloud</summary>
-    <description>built-in torrent search;Start and stop Aria2 process, manage Aria2 from the web;
-Download videos from youtube, twitter and other sites;</description>
+    <description>
+Search for torrents within the app from mutiple BT sites;
+Control Aria2 and manage download tasks from the web;
+download videos from 700+ video sites(youtube,youku,vimo,dailymotion,twitter,facebook and the likes
+</description>
     <version>0.5.0</version>
     <licence>agpl</licence>
     <author mail="freefallbenson@gmail.com" homepage="https://github.com/shiningw">jiaxinhuang</author>
@@ -12,8 +15,8 @@ Download videos from youtube, twitter and other sites;</description>
     <category>tools</category>
     <website>https://github.com/shiningw/ncdownloader</website>
     <bugs>https://github.com/shiningw/ncdownloader/issues</bugs>
-    <screenshot>https://user-images.githubusercontent.com/3911975/132008248-dbb6036e-e3c2-4e5c-9274-d2b1ae091373.png</screenshot>
-    <screenshot>https://user-images.githubusercontent.com/3911975/132008308-dec2a7ba-4387-441e-9ded-538d61fbccf0.png</screenshot>
+    <screenshot>https://user-images.githubusercontent.com/3911975/142444998-54dd54a6-0c8e-4d49-8188-270964a99c50.png</screenshot>
+    <screenshot>https://user-images.githubusercontent.com/3911975/142445020-27ec389a-5437-4d28-acc0-5e757fd6897d.png</screenshot>
     <repository>https://github.com/shiningw/ncdownloader</repository>
     <dependencies>
         <nextcloud min-version="18" max-version="22"/>