diff --git a/NEWS.md b/NEWS.md
index 82ff23dc..432b0bc4 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -73,6 +73,7 @@ Red Panda C++ Version 2.27
   - fix: Option 'Pause after run in console' for tools doesn't work.
   - fix: Filename that contains '&' doesn't correctly displayed in the editor tab.
   - enhancement: Type induction for "auto &&" vars.
+  - enhancement: Syntax highlighting for c++ attributes.
   
 Red Panda C++ Version 2.26
   - enhancement: Code suggestion for embedded std::vectors.
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index f765d7c2..0212e155 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -86,6 +86,7 @@
 #include <QMimeType>
 #include <QToolTip>
 #include <QCompleter>
+#include <QUuid>
 
 #include "mainwindow.h"
 #include <QScrollBar>
diff --git a/libs/qsynedit/qsynedit/syntaxer/cpp.cpp b/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
index 2617ca7f..e26cad7e 100644
--- a/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/cpp.cpp
@@ -20,6 +20,9 @@
 #include <QFont>
 #include <QDebug>
 
+#define DATA_KEY_INITIAL_DCHAR_SEQ "initialDCharSeq"
+#define DATA_KEY_IN_ATTRIBUTE "inAttribute"
+
 namespace QSynedit {
 
 static const QSet<QString> CppStatementKeyWords {
@@ -152,6 +155,21 @@ const QSet<QString> CppSyntaxer::Keywords {
 
     "nullptr",
 };
+
+const QSet<QString> CppSyntaxer::StandardAttributes {
+    "noreturn",
+    "carries_dependency",
+    "deprecated",
+    "fallthrough",
+    "nodiscard",
+    "maybe_unused",
+    "likely",
+    "unlikely",
+    "no_unique_address",
+    "assume",
+    "optimize_for_synchronized"
+};
+
 CppSyntaxer::CppSyntaxer(): Syntaxer()
 {
     mCharAttribute = std::make_shared<TokenAttribute>(SYNS_AttrCharacter,
@@ -293,6 +311,12 @@ bool CppSyntaxer::isCharEscaping(int state)
     return state == RangeState::rsCharEscaping;
 }
 
+bool CppSyntaxer::isInAttribute(const SyntaxState &state)
+{
+    return state.extraData.contains(DATA_KEY_IN_ATTRIBUTE)
+            && state.extraData[DATA_KEY_IN_ATTRIBUTE].toBool();
+}
+
 CppSyntaxer::TokenId CppSyntaxer::getTokenId()
 {
     return mTokenId;
@@ -652,6 +676,8 @@ void CppSyntaxer::procIdentifier()
         if (CppStatementKeyWords.contains(word)) {
             pushIndents(IndentType::Statement);
         }
+    } else if (isInAttribute(mRange) && StandardAttributes.contains(word)) {
+        mTokenId = TokenId::Key;
     } else {
         mTokenId = TokenId::Identifier;
     }
@@ -1002,7 +1028,7 @@ void CppSyntaxer::procRawString()
     mTokenId = TokenId::RawString;
     QString rawStringInitialDCharSeq;
     if (mRange.state == RangeState::rsRawString)
-        mRange.extraData = std::make_shared<QVariant>("");
+        mRange.extraData[DATA_KEY_INITIAL_DCHAR_SEQ] = "";
     while (mRun<mLineSize) {
         if (mRange.state!=RangeState::rsRawStringNotEscaping &&
                 (mLine[mRun].isSpace()
@@ -1019,16 +1045,16 @@ void CppSyntaxer::procRawString()
         case '(':
             if (mRange.state==RangeState::rsRawString) {
                 mRange.state = RangeState::rsRawStringNotEscaping;
-                mRange.extraData = std::make_shared<QVariant>(rawStringInitialDCharSeq);
+                mRange.extraData[DATA_KEY_INITIAL_DCHAR_SEQ] = rawStringInitialDCharSeq;
             }
             break;
         case ')':
             if (mRange.state == RangeState::rsRawStringNotEscaping) {
-                rawStringInitialDCharSeq = mRange.extraData->toString();
+                rawStringInitialDCharSeq = mRange.extraData[DATA_KEY_INITIAL_DCHAR_SEQ].toString();
                 if ( mLine.mid(mRun+1,rawStringInitialDCharSeq.length()) == rawStringInitialDCharSeq) {
                     mRun = mRun+rawStringInitialDCharSeq.length();
                     mRange.state = RangeState::rsRawStringEnd;
-                    mRange.extraData = nullptr;
+                    mRange.extraData.remove(DATA_KEY_INITIAL_DCHAR_SEQ);
                 }
             }
             break;
@@ -1137,7 +1163,16 @@ void CppSyntaxer::procSpace()
 
 void CppSyntaxer::procSquareClose()
 {
-    mRun+=1;
+    mRun++;
+    if (mRun < mLineSize && mLine[mRun]==']') {
+        if (mRange.extraData.contains(DATA_KEY_IN_ATTRIBUTE)
+                && mRange.extraData[DATA_KEY_IN_ATTRIBUTE].toBool()) {
+            mTokenId = TokenId::Symbol;
+            mRun++;
+            mRange.extraData.remove(DATA_KEY_IN_ATTRIBUTE);
+            return;
+        }
+    }
     mTokenId = TokenId::Symbol;
     mRange.bracketLevel--;
     if (mRange.bracketLevel<0)
@@ -1147,10 +1182,16 @@ void CppSyntaxer::procSquareClose()
 
 void CppSyntaxer::procSquareOpen()
 {
-    mRun+=1;
-    mTokenId = TokenId::Symbol;
-    mRange.bracketLevel++;
-    pushIndents(IndentType::Bracket);
+    mRun++;
+    if (mRun < mLineSize && mLine[mRun]=='[') {
+        mRun++;
+        mTokenId = TokenId::Symbol;
+        mRange.extraData[DATA_KEY_IN_ATTRIBUTE]=true;
+    } else{
+        mTokenId = TokenId::Symbol;
+        mRange.bracketLevel++;
+        pushIndents(IndentType::Bracket);
+    }
 }
 
 void CppSyntaxer::procStar()
diff --git a/libs/qsynedit/qsynedit/syntaxer/cpp.h b/libs/qsynedit/qsynedit/syntaxer/cpp.h
index 6209da37..2235fafa 100644
--- a/libs/qsynedit/qsynedit/syntaxer/cpp.h
+++ b/libs/qsynedit/qsynedit/syntaxer/cpp.h
@@ -90,12 +90,15 @@ public:
 
     static const QSet<QString> ValidIntegerSuffixes;
 
+    static const QSet<QString> StandardAttributes;
+
     bool isStringToNextLine(int state);
     bool isRawStringStart(int state);
     bool isRawStringNoEscape(int state);
     bool isRawStringEnd(int state);
     bool isCharNotFinished(int state);
     bool isCharEscaping(int state);
+    bool isInAttribute(const SyntaxState &state);
 
     TokenId getTokenId();
 private:
diff --git a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
index 08417146..dcb7e8f0 100644
--- a/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
+++ b/libs/qsynedit/qsynedit/syntaxer/syntaxer.h
@@ -23,7 +23,7 @@
 #include <QMap>
 #include <QSet>
 #include <QVector>
-#include <QVector>
+#include <QVariant>
 #include "../types.h"
 
 namespace QSynedit {
@@ -57,7 +57,7 @@ struct SyntaxState {
     QVector<IndentInfo> indents; // indents stack (needed by auto indent)
     IndentInfo lastUnindent;
     bool hasTrailingSpaces;
-    std::shared_ptr<QVariant> extraData;
+    QMap<QString,QVariant> extraData;
 
     bool operator==(const SyntaxState& s2);
     IndentInfo getLastIndent();