diff --git a/src/common/string_util.h b/src/common/string_util.h
index 7b079a31e..4eabfd307 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -206,17 +206,6 @@ inline std::string ToChars(bool value, int base)
 std::optional<std::vector<u8>> DecodeHex(const std::string_view& str);
 std::string EncodeHex(const u8* data, int length);
 
-/// starts_with from C++20
-ALWAYS_INLINE static bool StartsWith(const std::string_view& str, const std::string_view& prefix)
-{
-  return (str.compare(0, prefix.length(), prefix) == 0);
-}
-ALWAYS_INLINE static bool EndsWith(const std::string_view& str, const std::string_view& suffix)
-{
-  const std::size_t suffix_length = suffix.length();
-  return (str.length() >= suffix_length && str.compare(str.length() - suffix_length, suffix_length, suffix) == 0);
-}
-
 /// StartsWith/EndsWith variants which aren't case sensitive.
 ALWAYS_INLINE static bool StartsWithNoCase(const std::string_view& str, const std::string_view& prefix)
 {
diff --git a/src/core/gdb_protocol.cpp b/src/core/gdb_protocol.cpp
index 8276a5c79..dc9af1cd8 100644
--- a/src/core/gdb_protocol.cpp
+++ b/src/core/gdb_protocol.cpp
@@ -306,7 +306,7 @@ std::string ProcessPacket(const std::string_view& data)
   // Try to invoke packet command.
   bool processed = false;
   for (const auto& command : COMMANDS) {
-    if (StringUtil::StartsWith(packet->data(), command.first)) {
+    if (packet->starts_with(command.first)) {
       Log_DebugPrintf("Processing command '%s'", command.first);
 
       // Invoke command, remove command name from payload.
diff --git a/src/core/memory_card_image.cpp b/src/core/memory_card_image.cpp
index 0b970f71d..ed27affae 100644
--- a/src/core/memory_card_image.cpp
+++ b/src/core/memory_card_image.cpp
@@ -775,7 +775,7 @@ bool MemoryCardImage::ImportSave(DataArray* data, const char* filename)
     return false;
   }
 
-  if (StringUtil::EndsWith(filename, ".mcs"))
+  if (std::string_view(filename).ends_with(".mcs"))
   {
     return ImportSaveWithDirectoryFrame(data, filename, sd);
   }
diff --git a/src/core/pcdrv.cpp b/src/core/pcdrv.cpp
index 88ed5bb1e..17590271e 100644
--- a/src/core/pcdrv.cpp
+++ b/src/core/pcdrv.cpp
@@ -82,7 +82,7 @@ static std::string ResolveHostPath(const std::string& path)
   const std::string& root = g_settings.pcdrv_root;
   std::string canonicalized_path = Path::Canonicalize(Path::Combine(root, path));
   if (canonicalized_path.length() < root.length() ||                      // Length has to be longer (a file),
-      !StringUtil::StartsWith(canonicalized_path, root) ||                // and start with the host root,
+      !canonicalized_path.starts_with(root) ||                            // and start with the host root,
       canonicalized_path[root.length()] != FS_OSPATH_SEPARATOR_CHARACTER) // and we can't access a sibling.
   {
     Log_ErrorPrintf("Denying access to path outside of PCDrv directory. Requested path: '%s', "
diff --git a/src/duckstation-qt/qtkeycodes.cpp b/src/duckstation-qt/qtkeycodes.cpp
index 8de6d928e..cdcf0b161 100644
--- a/src/duckstation-qt/qtkeycodes.cpp
+++ b/src/duckstation-qt/qtkeycodes.cpp
@@ -462,7 +462,7 @@ std::optional<u32> InputManager::ConvertHostKeyboardStringToCode(const std::stri
 {
   std::string_view compare_name = str;
   u32 modifier_bits = 0;
-  if (StringUtil::StartsWith(compare_name, "Numpad"))
+  if (compare_name.starts_with("Numpad"))
   {
     compare_name = compare_name.substr(6);
     modifier_bits |= Qt::KeypadModifier;
diff --git a/src/util/cd_image_device.cpp b/src/util/cd_image_device.cpp
index d38da8f89..e4006b66f 100644
--- a/src/util/cd_image_device.cpp
+++ b/src/util/cd_image_device.cpp
@@ -500,7 +500,7 @@ std::vector<std::pair<std::string, std::string>> CDImage::GetDeviceList()
 
 bool CDImage::IsDeviceName(const char* filename)
 {
-  return StringUtil::StartsWith(filename, "\\\\.\\");
+  return std::string_view(filename).starts_with("\\\\.\\");
 }
 
 #else
diff --git a/src/util/dinput_source.cpp b/src/util/dinput_source.cpp
index 8622dd7ba..52256ff3e 100644
--- a/src/util/dinput_source.cpp
+++ b/src/util/dinput_source.cpp
@@ -326,7 +326,7 @@ void DInputSource::UpdateMotorState(InputBindingKey large_key, InputBindingKey s
 std::optional<InputBindingKey> DInputSource::ParseKeyString(const std::string_view& device,
                                                             const std::string_view& binding)
 {
-  if (!StringUtil::StartsWith(device, "DInput-") || binding.empty())
+  if (!device.starts_with("DInput-") || binding.empty())
     return std::nullopt;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(7));
@@ -337,7 +337,7 @@ std::optional<InputBindingKey> DInputSource::ParseKeyString(const std::string_vi
   key.source_type = InputSourceType::DInput;
   key.source_index = static_cast<u32>(player_id.value());
 
-  if (StringUtil::StartsWith(binding, "+Axis") || StringUtil::StartsWith(binding, "-Axis"))
+  if (binding.starts_with("+Axis") || binding.starts_with("-Axis"))
   {
     std::string_view end;
     const std::optional<u32> axis_index = StringUtil::FromChars<u32>(binding.substr(5), 10, &end);
@@ -350,7 +350,7 @@ std::optional<InputBindingKey> DInputSource::ParseKeyString(const std::string_vi
     key.invert = (end == "~");
     return key;
   }
-  else if (StringUtil::StartsWith(binding, "FullAxis"))
+  else if (binding.starts_with("FullAxis"))
   {
     std::string_view end;
     const std::optional<u32> axis_index = StringUtil::FromChars<u32>(binding.substr(8), 10, &end);
@@ -363,7 +363,7 @@ std::optional<InputBindingKey> DInputSource::ParseKeyString(const std::string_vi
     key.invert = (end == "~");
     return key;
   }
-  else if (StringUtil::StartsWith(binding, "Hat"))
+  else if (binding.starts_with("Hat"))
   {
     if (binding[3] < '0' || binding[3] > '9' || binding.length() < 5)
       return std::nullopt;
@@ -383,7 +383,7 @@ std::optional<InputBindingKey> DInputSource::ParseKeyString(const std::string_vi
     // bad direction
     return std::nullopt;
   }
-  else if (StringUtil::StartsWith(binding, "Button"))
+  else if (binding.starts_with("Button"))
   {
     const std::optional<u32> button_index = StringUtil::FromChars<u32>(binding.substr(6));
     if (!button_index.has_value())
diff --git a/src/util/input_manager.cpp b/src/util/input_manager.cpp
index d7611e03e..ef58ae06e 100644
--- a/src/util/input_manager.cpp
+++ b/src/util/input_manager.cpp
@@ -241,15 +241,15 @@ std::optional<InputBindingKey> InputManager::ParseInputBindingKey(const std::str
     return std::nullopt;
 
   // lameee, string matching
-  if (StringUtil::StartsWith(source, "Keyboard"))
+  if (source.starts_with("Keyboard"))
   {
     return ParseHostKeyboardKey(source, sub_binding);
   }
-  else if (StringUtil::StartsWith(source, "Pointer"))
+  else if (source.starts_with("Pointer"))
   {
     return ParsePointerKey(source, sub_binding);
   }
-  else if (StringUtil::StartsWith(source, "Sensor"))
+  else if (source.starts_with("Sensor"))
   {
     return ParseSensorKey(source, sub_binding);
   }
@@ -420,7 +420,7 @@ void InputManager::PrettifyInputBindingPart(const std::string_view binding, Smal
     return;
 
   // lameee, string matching
-  if (StringUtil::StartsWith(source, "Keyboard"))
+  if (source.starts_with("Keyboard"))
   {
     std::optional<InputBindingKey> key = ParseHostKeyboardKey(source, sub_binding);
     const char* icon = key.has_value() ? ConvertHostKeyboardCodeToIcon(key->data) : nullptr;
@@ -431,7 +431,7 @@ void InputManager::PrettifyInputBindingPart(const std::string_view binding, Smal
       return;
     }
   }
-  else if (StringUtil::StartsWith(source, "Pointer"))
+  else if (source.starts_with("Pointer"))
   {
     const std::optional<InputBindingKey> key = ParsePointerKey(source, sub_binding);
     if (key.has_value())
@@ -451,7 +451,7 @@ void InputManager::PrettifyInputBindingPart(const std::string_view binding, Smal
       }
     }
   }
-  else if (StringUtil::StartsWith(source, "Sensor"))
+  else if (source.starts_with("Sensor"))
   {
   }
   else
@@ -691,7 +691,7 @@ std::optional<InputBindingKey> InputManager::ParsePointerKey(const std::string_v
   key.source_type = InputSourceType::Pointer;
   key.source_index = static_cast<u32>(pointer_index.value());
 
-  if (StringUtil::StartsWith(sub_binding, "Button"))
+  if (sub_binding.starts_with("Button"))
   {
     const std::optional<s32> button_number = StringUtil::FromChars<s32>(sub_binding.substr(6));
     if (!button_number.has_value() || button_number.value() < 0)
@@ -704,7 +704,7 @@ std::optional<InputBindingKey> InputManager::ParsePointerKey(const std::string_v
 
   for (u32 i = 0; i < s_pointer_axis_names.size(); i++)
   {
-    if (StringUtil::StartsWith(sub_binding, s_pointer_axis_names[i]))
+    if (sub_binding.starts_with(s_pointer_axis_names[i]))
     {
       key.source_subtype = InputSubclass::PointerAxis;
       key.data = i;
@@ -736,7 +736,7 @@ std::optional<InputBindingKey> InputManager::ParsePointerKey(const std::string_v
 
 std::optional<u32> InputManager::GetIndexFromPointerBinding(const std::string_view& source)
 {
-  if (!StringUtil::StartsWith(source, "Pointer-"))
+  if (!source.starts_with("Pointer-"))
     return std::nullopt;
 
   const std::optional<s32> pointer_index = StringUtil::FromChars<s32>(source.substr(8));
@@ -763,7 +763,7 @@ std::optional<InputBindingKey> InputManager::ParseSensorKey(const std::string_vi
 
   for (u32 i = 0; i < s_sensor_accelerometer_names.size(); i++)
   {
-    if (StringUtil::StartsWith(sub_binding, s_sensor_accelerometer_names[i]))
+    if (sub_binding.starts_with(s_sensor_accelerometer_names[i]))
     {
       key.source_subtype = InputSubclass::SensorAccelerometer;
       key.data = i;
@@ -1855,14 +1855,14 @@ bool InputManager::MigrateBindings(SettingsInterface& si)
         Log_DevPrintf("%s -> %s", old_bind.c_str(), new_bind.c_str());
         num_changes++;
       }
-      else if (StringUtil::StartsWith(old_bind.c_str(), "Keyboard/Keypad+"))
+      else if (old_bind.starts_with("Keyboard/Keypad+"))
       {
         new_bind.format("Keyboard/Numpad{}", old_bind.substr(16));
         si.SetStringValue(new_section.c_str(), new_key, new_bind);
         Log_DevPrintf("%s -> %s", old_bind.c_str(), new_bind.c_str());
         num_changes++;
       }
-      else if (StringUtil::StartsWith(old_bind.c_str(), "Keyboard/"))
+      else if (old_bind.starts_with("Keyboard/"))
       {
         // pass through as-is
         si.SetStringValue(new_section.c_str(), new_key, old_bind.c_str());
diff --git a/src/util/input_source.cpp b/src/util/input_source.cpp
index 6165b35d3..b8e161f0b 100644
--- a/src/util/input_source.cpp
+++ b/src/util/input_source.cpp
@@ -82,7 +82,7 @@ std::optional<InputBindingKey> InputSource::ParseGenericControllerKey(InputSourc
   key.source_type = clazz;
   key.source_index = source_index.value();
 
-  if (StringUtil::StartsWith(sub_binding, "+Axis") || StringUtil::StartsWith(sub_binding, "-Axis"))
+  if (sub_binding.starts_with("+Axis") || sub_binding.starts_with("-Axis"))
   {
     const std::optional<s32> axis_number = StringUtil::FromChars<s32>(sub_binding.substr(5));
     if (!axis_number.has_value() || axis_number.value() < 0)
@@ -98,7 +98,7 @@ std::optional<InputBindingKey> InputSource::ParseGenericControllerKey(InputSourc
     else
       return std::nullopt;
   }
-  else if (StringUtil::StartsWith(sub_binding, "FullAxis"))
+  else if (sub_binding.starts_with("FullAxis"))
   {
     const std::optional<s32> axis_number = StringUtil::FromChars<s32>(sub_binding.substr(8));
     if (!axis_number.has_value() || axis_number.value() < 0)
@@ -107,7 +107,7 @@ std::optional<InputBindingKey> InputSource::ParseGenericControllerKey(InputSourc
     key.data = static_cast<u32>(axis_number.value());
     key.modifier = InputModifier::FullAxis;
   }
-  else if (StringUtil::StartsWith(sub_binding, "Button"))
+  else if (sub_binding.starts_with("Button"))
   {
     const std::optional<s32> button_number = StringUtil::FromChars<s32>(sub_binding.substr(6));
     if (!button_number.has_value() || button_number.value() < 0)
diff --git a/src/util/sdl_input_source.cpp b/src/util/sdl_input_source.cpp
index bdb442be6..f2792f971 100644
--- a/src/util/sdl_input_source.cpp
+++ b/src/util/sdl_input_source.cpp
@@ -324,7 +324,7 @@ std::vector<std::pair<std::string, std::string>> SDLInputSource::EnumerateDevice
 std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_view& device,
                                                               const std::string_view& binding)
 {
-  if (!StringUtil::StartsWith(device, "SDL-") || binding.empty())
+  if (!device.starts_with("SDL-") || binding.empty())
     return std::nullopt;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
@@ -335,7 +335,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
   key.source_type = InputSourceType::SDL;
   key.source_index = static_cast<u32>(player_id.value());
 
-  if (StringUtil::EndsWith(binding, "Motor"))
+  if (binding.ends_with("Motor"))
   {
     key.source_subtype = InputSubclass::ControllerMotor;
     if (binding == "LargeMotor")
@@ -353,7 +353,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
       return std::nullopt;
     }
   }
-  else if (StringUtil::EndsWith(binding, "Haptic"))
+  else if (binding.ends_with("Haptic"))
   {
     key.source_subtype = InputSubclass::ControllerHaptic;
     key.data = 0;
@@ -364,7 +364,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
     // likely an axis
     const std::string_view axis_name(binding.substr(1));
 
-    if (StringUtil::StartsWith(axis_name, "Axis"))
+    if (axis_name.starts_with("Axis"))
     {
       std::string_view end;
       if (auto value = StringUtil::FromChars<u32>(axis_name.substr(4), 10, &end))
@@ -388,7 +388,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
       }
     }
   }
-  else if (StringUtil::StartsWith(binding, "FullAxis"))
+  else if (binding.starts_with("FullAxis"))
   {
     std::string_view end;
     if (auto value = StringUtil::FromChars<u32>(binding.substr(8), 10, &end))
@@ -400,7 +400,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
       return key;
     }
   }
-  else if (StringUtil::StartsWith(binding, "Hat"))
+  else if (binding.starts_with("Hat"))
   {
     std::string_view hat_dir;
     if (auto value = StringUtil::FromChars<u32>(binding.substr(3), 10, &hat_dir); value.has_value() && !hat_dir.empty())
@@ -419,7 +419,7 @@ std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_
   else
   {
     // must be a button
-    if (StringUtil::StartsWith(binding, "Button"))
+    if (binding.starts_with("Button"))
     {
       if (auto value = StringUtil::FromChars<u32>(binding.substr(6)))
       {
@@ -584,7 +584,7 @@ bool SDLInputSource::ProcessSDLEvent(const SDL_Event* event)
 
 SDL_Joystick* SDLInputSource::GetJoystickForDevice(const std::string_view& device)
 {
-  if (!StringUtil::StartsWith(device, "SDL-"))
+  if (!device.starts_with("SDL-"))
     return nullptr;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
@@ -893,7 +893,7 @@ std::vector<InputBindingKey> SDLInputSource::EnumerateMotors()
 
 bool SDLInputSource::GetGenericBindingMapping(const std::string_view& device, GenericInputBindingMapping* mapping)
 {
-  if (!StringUtil::StartsWith(device, "SDL-"))
+  if (!device.starts_with("SDL-"))
     return false;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
diff --git a/src/util/xinput_source.cpp b/src/util/xinput_source.cpp
index 5a96c6706..dec3fc9e5 100644
--- a/src/util/xinput_source.cpp
+++ b/src/util/xinput_source.cpp
@@ -253,7 +253,7 @@ std::vector<std::pair<std::string, std::string>> XInputSource::EnumerateDevices(
 std::optional<InputBindingKey> XInputSource::ParseKeyString(const std::string_view& device,
                                                             const std::string_view& binding)
 {
-  if (!StringUtil::StartsWith(device, "XInput-") || binding.empty())
+  if (!device.starts_with("XInput-") || binding.empty())
     return std::nullopt;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(7));
@@ -264,7 +264,7 @@ std::optional<InputBindingKey> XInputSource::ParseKeyString(const std::string_vi
   key.source_type = InputSourceType::XInput;
   key.source_index = static_cast<u32>(player_id.value());
 
-  if (StringUtil::EndsWith(binding, "Motor"))
+  if (binding.ends_with("Motor"))
   {
     key.source_subtype = InputSubclass::ControllerMotor;
     if (binding == "LargeMotor")
@@ -386,7 +386,7 @@ std::vector<InputBindingKey> XInputSource::EnumerateMotors()
 
 bool XInputSource::GetGenericBindingMapping(const std::string_view& device, GenericInputBindingMapping* mapping)
 {
-  if (!StringUtil::StartsWith(device, "XInput-"))
+  if (!device.starts_with("XInput-"))
     return false;
 
   const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(7));