diff --git a/README.md b/README.md
index 7fab864..fffbbc7 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 # easyOA
 
-每天阅读论文，经常各种pdf链接满天飞，很头疼，根据自己的需求，编写了 easyOA 插件，它可以：
-1. PDF页面重命名为论文标题，方便标签页管理和搜索；
+每天阅读论文，经常各种pdf链接满天飞，很头疼。根据自己的需求，编写了 `easyOA` 插件，它可以：
+1. PDF页面重命名为论文标题，方便标签页管理和搜索，让你的历史记录和 [OneTab](https://chrome.google.com/webstore/detail/onetab/chphlpgkkbolifaimnlloiipkdnihall) 页面更清爽；
 2. 单击图标返回摘要页，摆脱手动修改URL。
 
 Reading papers every day, I often receive various PDF links, which can be quite overwhelming. To meet my own needs, I developed the `easyOA` plugin, which can:
-1. Rename PDF pages with the paper title for easier tab management and searching.
+1. Rename PDF pages with the paper title for easier tab management and searching, make your browser history and [OneTab](https://chrome.google.com/webstore/detail/onetab/chphlpgkkbolifaimnlloiipkdnihall) page clean.
 2. Return to the abstract page with a single click on the icon, eliminating the need for manually modifying the URL.
 
 
@@ -18,18 +18,21 @@ Reading papers every day, I often receive various PDF links, which can be quite
 - papers.nips.cc
 
 
-可能开发的功能 / Possible future developments:
+可能的开发计划 / Possible future developments:
 1. Download PDF with custom filename in the abstract page.
 2. link arxiv for abstract pages on ojs.aaai.org.
+3. Edge & Firefox.
 
 
 ## 安装 / Install
 
-之后会上传到 Chrome 应用商店，现在可以下载或克隆到本地，以开发者模式手动安装，参见 [How to install the unpacked extension in Chrome](https://webkul.com/blog/how-to-install-the-unpacked-extension-in-chrome/) (安装时选择本项目下的 `./chrome` 文件夹).
+Chrome 应用商店正在审核中，现在可以在 [release](https://github.com/izhx/easy-oa/releases) 页面下载 `crx文件` 手动安装。
 
+> 如果要 debug 或者贡献代码，可以下载或克隆到本地，以开发者模式手动安装，参见 [How to install the unpacked extension in Chrome](https://webkul.com/blog/how-to-install-the-unpacked-extension-in-chrome/) (安装时选择本项目下的 `./chrome` 文件夹).
 
-I am currently trying to upload it to the Chrome Web Store.
-For now, you can clone it to your local machine and install it in developer mode.
+Under Chrome app store reviewing, and now you can download `crx file` from the [release](https://github.com/izhx/easy-oa/releases) page and install manually.
+
+> For debugging or contributing, you can clone it to your local machine and install it in developer mode.
 Refer to [How to install the unpacked extension in Chrome](https://webkul.com/blog/how-to-install-the-unpacked-extension-in-chrome/) (select the `./chrome` folder of this repo).
 
 
diff --git a/chrome/background.js b/chrome/background.js
index 2e36994..a3ed8e8 100644
--- a/chrome/background.js
+++ b/chrome/background.js
@@ -1,6 +1,5 @@
 // Add the back to abstract button.
 
-const arxivIdRegex = /\/(\d{4}\.\d{4,5})/;
 const mlrPressRegex = /\/[^\/]+$/;
 let tabTitles = {};
 
@@ -66,7 +65,7 @@ chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
 
 // Remove the saved title when the tab is closed.
 chrome.tabs.onRemoved.addListener((tabId, removeInfo) => {
-  delete tabTitles[tabId];
+  if (isPdf(tab.url)) delete tabTitles[tabId];
 });
 
 
diff --git a/chrome/manifest.json b/chrome/manifest.json
index 7962384..463ed6c 100644
--- a/chrome/manifest.json
+++ b/chrome/manifest.json
@@ -1,13 +1,23 @@
 {
-  "name": "easyOA",
-  "description": "1. PDF back to abstract page; 2. Rename PDF page title;",
+  "name": "EasyOA",
+  "description": "1. PDF back to abstract page; 2. Rename PDF page with paper title;",
   "version": "0.1",
   "manifest_version": 3,
   "background": {
     "service_worker": "background.js"
   },
   "action": {
-    "default_title": "Click to abstract!"
+    "default_title": "Click to abstract!",
+    "icons": {
+      "16": "assets/easyoa-16.png",
+      "48": "assets/easyoa-48.png",
+      "128": "assets/easyoa-128.png"
+    }
+  },
+  "icons": {
+    "16": "assets/easyoa-16.png",
+    "48": "assets/easyoa-48.png",
+    "128": "assets/easyoa-128.png"
   },
   "content_scripts": [
     {
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