diff --git a/.gitmodules b/.gitmodules
index b6ce27404..1a24ca665 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,3 +34,6 @@
 [submodule "submodules/webextensions-lib-dom-updater"]
 	path = submodules/webextensions-lib-dom-updater
 	url = https://github.com/piroor/webextensions-lib-dom-updater.git
+[submodule "submodules/webextensions-lib-placeholder-parser"]
+	path = submodules/webextensions-lib-placeholder-parser
+	url = https://github.com/piroor/webextensions-lib-placeholder-parser.git
diff --git a/submodules/webextensions-lib-placeholder-parser b/submodules/webextensions-lib-placeholder-parser
new file mode 160000
index 000000000..4230e82ad
--- /dev/null
+++ b/submodules/webextensions-lib-placeholder-parser
@@ -0,0 +1 @@
+Subproject commit 4230e82ad5433479eedda9aa76d6822d76c42a04
diff --git a/webextensions/Makefile b/webextensions/Makefile
index 57b9d0466..a72826383 100644
--- a/webextensions/Makefile
+++ b/webextensions/Makefile
@@ -43,6 +43,7 @@ install_extlib: install_dependency
 	cp ../submodules/webextensions-lib-l10n/l10n.js $(EXTERNAL_LIB_DIR)/l10n-classic.js; echo 'window.l10n = l10n;' >> $(EXTERNAL_LIB_DIR)/l10n-classic.js
 	cp ../submodules/webextensions-lib-dom-updater/src/diff.js $(EXTERNAL_LIB_DIR)/
 	cp ../submodules/webextensions-lib-dom-updater/src/dom-updater.js $(EXTERNAL_LIB_DIR)/
+	cp ../submodules/webextensions-lib-placeholder-parser/src/placeholder-parser.js $(EXTERNAL_LIB_DIR)/
 	echo "/* CodeMirror version $$(cat node_modules/codemirror/package.json | jq -r .version) */" > $(EXTERNAL_LIB_DIR)/codemirror.js
 	cp $(EXTERNAL_LIB_DIR)/codemirror.js $(EXTERNAL_LIB_DIR)/codemirror.css
 	cp $(EXTERNAL_LIB_DIR)/codemirror.js $(EXTERNAL_LIB_DIR)/codemirror-mode-css.js
diff --git a/webextensions/common/bookmark.js b/webextensions/common/bookmark.js
index 2fa98ca49..f9bc9b200 100644
--- a/webextensions/common/bookmark.js
+++ b/webextensions/common/bookmark.js
@@ -6,6 +6,7 @@
 'use strict';
 
 import MenuUI from '/extlib/MenuUI.js';
+import * as PlaceHolderParser from '/extlib/placeholder-parser.js';
 import RichConfirm from '/extlib/RichConfirm.js';
 
 import {
@@ -239,13 +240,30 @@ export async function bookmarkTabs(tabs, { parentId, index, showDialog, title }
   const now = new Date();
   const year = String(now.getFullYear());
   if (!title)
-    title = configs.bookmarkTreeFolderName
-      .replace(/%TITLE%/gi, tabs[0].title)
-      .replace(/%URL%/gi, tabs[0].url)
-      .replace(/%SHORT_?YEAR%/gi, year.slice(-2))
-      .replace(/%(FULL_?)?YEAR%/gi, year)
-      .replace(/%MONTH%/gi, String(now.getMonth() + 1).padStart(2, '0'))
-      .replace(/%DATE%/gi, String(now.getDate()).padStart(2, '0'));
+    title = PlaceHolderParser.process(configs.bookmarkTreeFolderName, (name, _rawArgs, ..._args) => {
+      switch (name.toLowerCase()) {
+        case 'title':
+          return tabs[0].title;
+
+        case 'url':
+          return tabs[0].url;
+
+        case 'short_year':
+        case 'shortyear':
+          return year.slice(-2);
+
+        case 'full_year':
+        case 'fullyear':
+        case 'year':
+          return year;
+
+        case 'month':
+          return String(now.getMonth() + 1).padStart(2, '0');
+
+        case 'date':
+          return String(now.getDate()).padStart(2, '0');
+      }
+    });
   const folderParams = {
     type: 'folder',
     title