5 files changed, 7 insertions, 7 deletions
diff --git a/Userland/Libraries/LibDiff/Hunks.cpp b/Userland/Libraries/LibDiff/Hunks.cpp
index 9887693d61..6870dda028 100644
--- a/Userland/Libraries/LibDiff/Hunks.cpp
+++ b/Userland/Libraries/LibDiff/Hunks.cpp
@@ -82,7 +82,7 @@ HunkLocation parse_hunk_location(const String& location_line)
         size_t length { 0 };
     };
     auto parse_start_and_length_pair = [](const String& raw) {
-        auto index_of_separator = raw.index_of(",").value();
+        auto index_of_separator = raw.find(',').value();
         auto start = raw.substring(0, index_of_separator);
         auto length = raw.substring(index_of_separator + 1, raw.length() - index_of_separator - 1);
         auto res = StartAndLength { start.to_uint().value() - 1, length.to_uint().value() - 1 };
diff --git a/Userland/Libraries/LibELF/Image.cpp b/Userland/Libraries/LibELF/Image.cpp
index b9bde0e15f..820996c72a 100644
--- a/Userland/Libraries/LibELF/Image.cpp
+++ b/Userland/Libraries/LibELF/Image.cpp
@@ -297,7 +297,7 @@ Optional<Image::Symbol> Image::find_demangled_function(const String& name) const
         if (symbol.is_undefined())
             return IterationDecision::Continue;
         auto demangled = demangle(symbol.name());
-        auto index_of_paren = demangled.index_of("(");
+        auto index_of_paren = demangled.find('(');
         if (index_of_paren.has_value()) {
             demangled = demangled.substring(0, index_of_paren.value());
         }
diff --git a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
index 284a3027cc..826206d041 100644
--- a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
@@ -240,7 +240,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::index_of)
     auto needle = vm.argument(0).to_string(global_object);
     if (vm.exception())
         return {};
-    return Value((i32)string.index_of(needle).value_or(-1));
+    return Value((i32)string.find(needle).value_or(-1));
 }
 
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_lowercase)
@@ -692,7 +692,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace)
     auto search_string = search_value.to_string(global_object);
     if (vm.exception())
         return {};
-    Optional<size_t> position = string.index_of(search_string);
+    Optional<size_t> position = string.find(search_string);
     if (!position.has_value())
         return js_string(vm, string);
 
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/DeprecatedCSSParser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/DeprecatedCSSParser.cpp
index c0c57a79eb..94ee9dbaaf 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/DeprecatedCSSParser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/DeprecatedCSSParser.cpp
@@ -389,7 +389,7 @@ public:
     {
         if (const auto start_pos = pseudo_name.find('('); start_pos.has_value()) {
             const auto start = start_pos.value() + 1;
-            if (const auto end_pos = pseudo_name.index_of(")", start); end_pos.has_value()) {
+            if (const auto end_pos = pseudo_name.find(')', start); end_pos.has_value()) {
                 return pseudo_name.substring_view(start, end_pos.value() - start).trim_whitespace();
             }
         }
diff --git a/Userland/Libraries/LibWeb/Loader/Resource.cpp b/Userland/Libraries/LibWeb/Loader/Resource.cpp
index 09ebeafe9c..0b75b8f886 100644
--- a/Userland/Libraries/LibWeb/Loader/Resource.cpp
+++ b/Userland/Libraries/LibWeb/Loader/Resource.cpp
@@ -43,7 +43,7 @@ void Resource::for_each_client(Function<void(ResourceClient&)> callback)
 
 static Optional<String> encoding_from_content_type(const String& content_type)
 {
-    auto offset = content_type.index_of("charset=");
+    auto offset = content_type.find("charset="sv);
     if (offset.has_value()) {
         auto encoding = content_type.substring(offset.value() + 8, content_type.length() - offset.value() - 8).to_lowercase();
         if (encoding.length() >= 2 && encoding.starts_with('"') && encoding.ends_with('"'))
@@ -58,7 +58,7 @@ static Optional<String> encoding_from_content_type(const String& content_type)
 
 static String mime_type_from_content_type(const String& content_type)
 {
-    auto offset = content_type.index_of(";");
+    auto offset = content_type.find(';');
     if (offset.has_value())
         return content_type.substring(0, offset.value()).to_lowercase();