diff --git a/README.md b/README.md
index e1276ca..1e3327c 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,22 @@
-# Tab Utilities Fixed
+# Tab Utilities Fixed (Deprecated)
+
 [Tab Utilities](https://addons.mozilla.org/firefox/addon/tab-utilities/)'s compatibility fixes release.
 
-The project's focused goal: Compatibility fixes for Firefox 28 (orange 'Firefox' button or Pale Moon) to the latest Firefox Beta (for Windows).
+The project's focused goal: Compatibility fixes for Firefox 28 (with orange 'Firefox' button or Pale Moon) to the latest Firefox Beta (tested for Windows).
 
 Issue reports and patches are welcome.
 
-[new TODO board](https://github.com/yfdyh000/tabutils/projects); 
+## Deprecated
+This project has been deprecated due to the new browser extension standard ([WebExtensions](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions); [W3C](https://browserext.github.io/browserext/); [Terminology](https://wiki.mozilla.org/Add-ons/Terminology)) to Firefox 57 and difficult to maintain, it still has some bugs in the final version, such as full screen support, as well as other quirks.
+
+If you would, you can continue to report problems (but no guaranteed for repair) or recommend alternatives on the issues.
+
+### My collections on AMO site
+* [WebExtensions for tabs](https://addons.mozilla.org/firefox/collections/yfdyh000/webextensions-for-tabs/)
+* [WebExtensions](https://addons.mozilla.org/firefox/collections/yfdyh000/webextensions/)
+
+## Resources
+[newer TODO board](https://github.com/yfdyh000/tabutils/projects); 
 [older TODO and notes](https://github.com/yfdyh000/tabutils/wiki/TODO).
 
 [Release versions and notes](https://github.com/yfdyh000/tabutils/releases) < may include the latest unsigned version.