diff --git a/addons/xterm-addon-web-links/src/WebLinksAddon.ts b/addons/xterm-addon-web-links/src/WebLinksAddon.ts
index 26d5904b..3290a59c 100644
--- a/addons/xterm-addon-web-links/src/WebLinksAddon.ts
+++ b/addons/xterm-addon-web-links/src/WebLinksAddon.ts
@@ -26,7 +26,13 @@ const end = ')($|' + negatedPathCharacterSet + ')';
 const strictUrlRegex = new RegExp(start + protocolClause + bodyClause + end);
 
 function handleLink(event: MouseEvent, uri: string): void {
-  window.open(uri, '_blank');
+  const newWindow = window.open();
+  if (newWindow) {
+    newWindow.opener = null;
+    newWindow.location.href = uri;
+  } else {
+    console.warn('Opening link blocked as opener could not be cleared');
+  }
 }
 
 export class WebLinksAddon implements ITerminalAddon {
diff --git a/src/browser/Linkifier.ts b/src/browser/Linkifier.ts
index 30c76e8a..971501b7 100644
--- a/src/browser/Linkifier.ts
+++ b/src/browser/Linkifier.ts
@@ -298,7 +298,13 @@ export class Linkifier implements ILinkifier {
         if (matcher.handler) {
           return matcher.handler(e, uri);
         }
-        window.open(uri, '_blank');
+        const newWindow = window.open();
+        if (newWindow) {
+          newWindow.opener = null;
+          newWindow.location.href = uri;
+        } else {
+          console.warn('Opening link blocked as opener could not be cleared');
+        }
       },
       () => {
         this._onLinkHover.fire(this._createLinkHoverEvent(x1, y1, x2, y2, fg));
diff --git a/typings/xterm.d.ts b/typings/xterm.d.ts
index 16e32110..fc2549bc 100644
--- a/typings/xterm.d.ts
+++ b/typings/xterm.d.ts
@@ -1170,7 +1170,7 @@ declare module 'xterm' {
   }
 
   /**
-   * (EXPERIMENTAL) Data type to register a CSI, DCS or ESC callback in the parser
+   * Data type to register a CSI, DCS or ESC callback in the parser
    * in the form:
    *    ESC I..I F
    *    CSI Prefix P..P I..I F
@@ -1214,7 +1214,7 @@ declare module 'xterm' {
   }
 
   /**
-   * (EXPERIMENTAL) Parser interface.
+   * Allows hooking into the parser for custom handling of escape sequences.
    */
   export interface IParser {
     /**
@@ -1231,11 +1231,6 @@ declare module 'xterm' {
      */
     registerCsiHandler(id: IFunctionIdentifier, callback: (params: (number | number[])[]) => boolean): IDisposable;
 
-    /**
-     * @deprecated use `registerMarker` instead.
-     */
-    addCsiHandler(id: IFunctionIdentifier, callback: (params: (number | number[])[]) => boolean): IDisposable;
-
     /**
      * Adds a handler for DCS escape sequences.
      * @param id Specifies the function identifier under which the callback
@@ -1255,11 +1250,6 @@ declare module 'xterm' {
      */
     registerDcsHandler(id: IFunctionIdentifier, callback: (data: string, param: (number | number[])[]) => boolean): IDisposable;
 
-    /**
-     * @deprecated use `registerMarker` instead.
-     */
-    addDcsHandler(id: IFunctionIdentifier, callback: (data: string, param: (number | number[])[]) => boolean): IDisposable;
-
     /**
      * Adds a handler for ESC escape sequences.
      * @param id Specifies the function identifier under which the callback
@@ -1273,11 +1263,6 @@ declare module 'xterm' {
      */
     registerEscHandler(id: IFunctionIdentifier, handler: () => boolean): IDisposable;
 
-    /**
-     * @deprecated use `registerMarker` instead.
-     */
-    addEscHandler(id: IFunctionIdentifier, handler: () => boolean): IDisposable;
-
     /**
      * Adds a handler for OSC escape sequences.
      * @param ident The number (first parameter) of the sequence.
@@ -1295,11 +1280,6 @@ declare module 'xterm' {
      * @return An IDisposable you can call to remove this handler.
      */
     registerOscHandler(ident: number, callback: (data: string) => boolean): IDisposable;
-
-    /**
-     * @deprecated use `registerMarker` instead.
-     */
-    addOscHandler(ident: number, callback: (data: string) => boolean): IDisposable;
   }
 
   /**