diff --git a/Source/Utility/Text/StringUtil.cpp b/Source/Utility/Text/StringUtil.cpp
new file mode 100644
index 00000000..da8eb5d9
--- /dev/null
+++ b/Source/Utility/Text/StringUtil.cpp
@@ -0,0 +1,52 @@
+#include "Utility/Text/StringUtil.h"
+
+#include <cstring>
+
+// OFFSET: 0x0058A4D0
+// FUNCTION: fn_02757
+int CountCharacters(WORD codePage, const char* text, const char* end) {
+  if (text == nullptr) {
+    return 0;
+  }
+
+  int count = 0;
+  while (*text != '\0' && (end == nullptr || text < end)) {
+    text = CharNextExA(codePage, text, 0);
+    if (end != nullptr && text > end) {
+      break;
+    }
+    ++count;
+  }
+  return count;
+}
+
+// OFFSET: 0x0058A620
+// FUNCTION: fn_02758
+bool ContainsText(const std::string& text, std::string_view pattern) {
+  return text.find(pattern.data(), 0, pattern.size()) != std::string::npos;
+}
+
+// OFFSET: 0x0058AAF0
+// FUNCTION: fn_02761
+bool IsNullOrEmpty(const char* text) {
+  return text == nullptr || std::strlen(text) == 0;
+}
+
+// OFFSET: 0x0058AC30
+// FUNCTION: fn_02762
+int RemoveAll(std::string& text, std::string_view pattern) {
+  return ReplaceAll(text, pattern, "");
+}
+
+// OFFSET: 0x0058AC60
+// FUNCTION: fn_02763
+int ReplaceAll(std::string& text, std::string_view pattern, std::string_view replacement) {
+  int count = 0;
+  std::size_t position = 0;
+  while ((position = text.find(pattern.data(), position, pattern.size())) != std::string::npos) {
+    text.replace(position, pattern.size(), replacement.data(), replacement.size());
+    position += replacement.size();
+    ++count;
+  }
+  return count;
+}
diff --git a/Source/Utility/Text/StringUtil.h b/Source/Utility/Text/StringUtil.h
new file mode 100644
index 00000000..54d6a5f9
--- /dev/null
+++ b/Source/Utility/Text/StringUtil.h
@@ -0,0 +1,14 @@
+#ifndef RAGNAROK_SOURCE_UTILITY_TEXT_STRINGUTIL_H
+#define RAGNAROK_SOURCE_UTILITY_TEXT_STRINGUTIL_H
+
+#include <string>
+#include <string_view>
+#include <windows.h>
+
+int CountCharacters(WORD codePage, const char* text, const char* end);
+bool ContainsText(const std::string& text, std::string_view pattern);
+bool IsNullOrEmpty(const char* text);
+int RemoveAll(std::string& text, std::string_view pattern);
+int ReplaceAll(std::string& text, std::string_view pattern, std::string_view replacement);
+
+#endif
diff --git a/data/compile.json b/data/compile.json
index 1fc72d4f..70f48879 100644
--- a/data/compile.json
+++ b/data/compile.json
@@ -835,6 +835,7 @@
   "Source/Utility/Text/FormatString.cpp": 0,
   "Source/Utility/Text/GroupedInteger.cpp": 0,
   "Source/Utility/Text/LanguageCharset.cpp": 0,
+  "Source/Utility/Text/StringUtil.cpp": 0,
   "Source/Utility/Text/TextEscapes.cpp": 0,
   "Source/Utility/Text/TextTokens.cpp": 0,
   "Source/Utility/Threading/NSyncObject.cpp": 0,