diff --git a/Source/Core/Common/FatFsUtil.cpp b/Source/Core/Common/FatFsUtil.cpp
index 9c513d5e42..fd17d418b1 100644
--- a/Source/Core/Common/FatFsUtil.cpp
+++ b/Source/Core/Common/FatFsUtil.cpp
@@ -724,9 +724,8 @@ static bool Unpack(const std::function<bool()>& cancelled, const std::string pat
 
     // Check for path traversal attacks.
     const bool is_path_traversal_attack =
-        (childname.find("\\") != std::string_view::npos) ||
-        (childname.find('/') != std::string_view::npos) ||
-        std::ranges::all_of(childname, [](char c) { return c == '.'; });
+        (childname.contains('\\')) || (childname.contains('/')) ||
+          std::ranges::all_of(childname, [](char c) { return c == '.'; });
     if (is_path_traversal_attack)
     {
       ERROR_LOG_FMT(
diff --git a/Source/Core/Core/Debugger/CodeTrace.cpp b/Source/Core/Core/Debugger/CodeTrace.cpp
index f90681a488..058a76703b 100644
--- a/Source/Core/Core/Debugger/CodeTrace.cpp
+++ b/Source/Core/Core/Debugger/CodeTrace.cpp
@@ -34,16 +34,15 @@ u32 GetMemoryTargetSize(std::string_view instr)
   constexpr char PAIRED_TAG = 'p';
 
   // Actual range is 0 to size - 1;
-  if (op.find(BYTE_TAG) != std::string::npos)
+  if (op.contains(BYTE_TAG))
   {
     return 1;
   }
-  else if (op.find(HALF_TAG) != std::string::npos)
+  else if (op.contains(HALF_TAG))
   {
     return 2;
   }
-  else if (op.find(DOUBLE_WORD_TAG) != std::string::npos ||
-           op.find(PAIRED_TAG) != std::string::npos)
+  else if (op.contains(DOUBLE_WORD_TAG) || op.contains(PAIRED_TAG))
   {
     return 8;
   }
diff --git a/Source/Core/Core/HW/GCMemcard/GCMemcardRaw.cpp b/Source/Core/Core/HW/GCMemcard/GCMemcardRaw.cpp
index f5a3f6a8ba..68eb70a873 100644
--- a/Source/Core/Core/HW/GCMemcard/GCMemcardRaw.cpp
+++ b/Source/Core/Core/HW/GCMemcard/GCMemcardRaw.cpp
@@ -62,7 +62,7 @@ MemoryCard::MemoryCard(const std::string& filename, ExpansionInterface::Slot car
     // Fills in the first 5 blocks (MC_HDR_SIZE bytes)
     auto& sram = Core::System::GetInstance().GetSRAM();
     const CardFlashId& flash_id = sram.settings_ex.flash_id[Memcard::SLOT_A];
-    const bool shift_jis = m_filename.find(".JAP.raw") != std::string::npos;
+    const bool shift_jis = m_filename.contains(".JAP.raw");
     const u32 rtc_bias = sram.settings.rtc_bias;
     const u32 sram_language = static_cast<u32>(sram.settings.language);
     const u64 format_time =
diff --git a/Source/Core/Core/HW/WiiSave.cpp b/Source/Core/Core/HW/WiiSave.cpp
index b636fb0b2c..d7a3ee872a 100644
--- a/Source/Core/Core/HW/WiiSave.cpp
+++ b/Source/Core/Core/HW/WiiSave.cpp
@@ -85,7 +85,7 @@ public:
     for (const SaveFile& file : m_files_list)
     {
       // files in subdirs are deleted automatically when the subdir is deleted
-      if (file.path.find('/') != std::string::npos)
+      if (file.path.contains('/'))
         continue;
 
       const auto result =
diff --git a/Source/Core/Core/IOS/FS/HostBackend/FS.cpp b/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
index 96ce91b275..f8cd8a8e1f 100644
--- a/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
+++ b/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
@@ -103,7 +103,7 @@ static u64 FixupDirectoryEntries(File::FSTEntry* dir, bool is_root)
 
     // Decode escaped invalid file system characters so that games (such as Harry Potter and the
     // Half-Blood Prince) can find what they expect.
-    if (it->virtualName.find("__") != std::string::npos)
+    if (it->virtualName.contains("__"))
       it->virtualName = Common::UnescapeFileName(it->virtualName);
 
     // Drop files that have too long filenames.
diff --git a/Source/Core/Core/NetPlayCommon.cpp b/Source/Core/Core/NetPlayCommon.cpp
index 91a03dd63e..96c1506e70 100644
--- a/Source/Core/Core/NetPlayCommon.cpp
+++ b/Source/Core/Core/NetPlayCommon.cpp
@@ -231,10 +231,10 @@ static bool DecompressPacketIntoFolderInternal(sf::Packet& packet, const std::st
     std::string name;
     packet >> name;
 
-    if (name.find('/') != std::string::npos)
+    if (name.contains('/'))
       return false;
 #ifdef _WIN32
-    if (name.find('\\') != std::string::npos)
+    if (name.contains('\\'))
       return false;
 #endif
     if (std::ranges::all_of(name, [](char c) { return c == '.'; }))
diff --git a/Source/Core/Core/PowerPC/BreakPoints.cpp b/Source/Core/Core/PowerPC/BreakPoints.cpp
index 45c66fde2b..399350a67d 100644
--- a/Source/Core/Core/PowerPC/BreakPoints.cpp
+++ b/Source/Core/Core/PowerPC/BreakPoints.cpp
@@ -92,10 +92,10 @@ void BreakPoints::AddFromStrings(const TBreakPointsStr& bp_strings)
       iss.ignore();
     iss >> std::hex >> bp.address;
     iss >> flags;
-    bp.is_enabled = flags.find('n') != flags.npos;
-    bp.log_on_hit = flags.find('l') != flags.npos;
-    bp.break_on_hit = flags.find('b') != flags.npos;
-    if (flags.find('c') != std::string::npos)
+    bp.is_enabled = flags.contains('n');
+    bp.log_on_hit = flags.contains('l');
+    bp.break_on_hit = flags.contains('b');
+    if (flags.contains('c'))
     {
       iss >> std::ws;
       std::string condition;
@@ -266,12 +266,12 @@ void MemChecks::AddFromStrings(const TMemChecksStr& mc_strings)
     iss >> std::hex >> mc.start_address >> mc.end_address >> flags;
 
     mc.is_ranged = mc.start_address != mc.end_address;
-    mc.is_enabled = flags.find('n') != flags.npos;
-    mc.is_break_on_read = flags.find('r') != flags.npos;
-    mc.is_break_on_write = flags.find('w') != flags.npos;
-    mc.log_on_hit = flags.find('l') != flags.npos;
-    mc.break_on_hit = flags.find('b') != flags.npos;
-    if (flags.find('c') != std::string::npos)
+    mc.is_enabled = flags.contains('n');
+    mc.is_break_on_read = flags.contains('r');
+    mc.is_break_on_write = flags.contains('w');
+    mc.log_on_hit = flags.contains('l');
+    mc.break_on_hit = flags.contains('b');
+    if (flags.contains('c'))
     {
       iss >> std::ws;
       std::string condition;
diff --git a/Source/Core/Core/PowerPC/Expression.cpp b/Source/Core/Core/PowerPC/Expression.cpp
index 7c12b3b16a..4d35b20c43 100644
--- a/Source/Core/Core/PowerPC/Expression.cpp
+++ b/Source/Core/Core/PowerPC/Expression.cpp
@@ -142,8 +142,7 @@ static double CallstackFunc(expr_func* f, vec_expr_t* args, void* c)
   const char* cstr = expr_get_str(&vec_nth(args, 0));
   if (cstr != nullptr)
   {
-    return std::ranges::any_of(
-        stack, [cstr](const auto& s) { return s.Name.find(cstr) != std::string::npos; });
+    return std::ranges::any_of(stack, [cstr](const auto& s) { return s.Name.contains(cstr); });
   }
 
   return 0;
diff --git a/Source/Core/DiscIO/RiivolutionPatcher.cpp b/Source/Core/DiscIO/RiivolutionPatcher.cpp
index a5093f586a..2fc8d807b0 100644
--- a/Source/Core/DiscIO/RiivolutionPatcher.cpp
+++ b/Source/Core/DiscIO/RiivolutionPatcher.cpp
@@ -62,7 +62,7 @@ FileDataLoaderHostFS::MakeAbsoluteFromRelative(std::string_view external_relativ
 #ifdef _WIN32
   // Riivolution treats a backslash as just a standard filename character, but we can't replicate
   // this properly on Windows. So if a file contains a backslash, immediately error out.
-  if (external_relative_path.find("\\") != std::string_view::npos)
+  if (external_relative_path.contains("\\"))
     return std::nullopt;
 #endif
 
diff --git a/Source/Core/UICommon/X11Utils.cpp b/Source/Core/UICommon/X11Utils.cpp
index 26f8a0ce09..aee468fc5b 100644
--- a/Source/Core/UICommon/X11Utils.cpp
+++ b/Source/Core/UICommon/X11Utils.cpp
@@ -111,7 +111,7 @@ void XRRConfiguration::Update()
   unsigned int fullWidth, fullHeight;
   char* output_name = nullptr;
   char auxFlag = '\0';
-  if (fullscreen_display_res.find(':') == std::string::npos)
+  if (!fullscreen_display_res.contains(':'))
   {
     fullWidth = fb_width;
     fullHeight = fb_height;
diff --git a/Source/Core/VideoBackends/Metal/MTLUtil.mm b/Source/Core/VideoBackends/Metal/MTLUtil.mm
index 05e2115ab3..be728a23ce 100644
--- a/Source/Core/VideoBackends/Metal/MTLUtil.mm
+++ b/Source/Core/VideoBackends/Metal/MTLUtil.mm
@@ -244,13 +244,13 @@ void Metal::Util::PopulateBackendInfoFeatures(const VideoConfig& config, Backend
   // Initialize DriverDetails first so we can use it later
   DriverDetails::Vendor vendor = DriverDetails::VENDOR_UNKNOWN;
   std::string name = [[device name] UTF8String];
-  if (name.find("NVIDIA") != std::string::npos)
+  if (name.contains("NVIDIA"))
     vendor = DriverDetails::VENDOR_NVIDIA;
-  else if (name.find("AMD") != std::string::npos)
+  else if (name.contains("AMD"))
     vendor = DriverDetails::VENDOR_ATI;
-  else if (name.find("Intel") != std::string::npos)
+  else if (name.contains("Intel"))
     vendor = DriverDetails::VENDOR_INTEL;
-  else if (name.find("Apple") != std::string::npos)
+  else if (name.contains("Apple"))
     vendor = DriverDetails::VENDOR_APPLE;
   const NSOperatingSystemVersion cocoa_ver = [[NSProcessInfo processInfo] operatingSystemVersion];
   double version = cocoa_ver.majorVersion * 100 + cocoa_ver.minorVersion;
diff --git a/Source/Core/VideoBackends/OGL/OGLConfig.cpp b/Source/Core/VideoBackends/OGL/OGLConfig.cpp
index 1da407e664..ddb60c90d2 100644
--- a/Source/Core/VideoBackends/OGL/OGLConfig.cpp
+++ b/Source/Core/VideoBackends/OGL/OGLConfig.cpp
@@ -53,11 +53,11 @@ void InitDriverInfo()
   {
     vendor = DriverDetails::VENDOR_ATI;
   }
-  else if (sversion.find("Mesa") != std::string::npos)
+  else if (sversion.contains("Mesa"))
   {
     vendor = DriverDetails::VENDOR_MESA;
   }
-  else if (svendor.find("Intel") != std::string::npos)
+  else if (svendor.contains("Intel"))
   {
     vendor = DriverDetails::VENDOR_INTEL;
   }
@@ -121,13 +121,12 @@ void InitDriverInfo()
     else if (svendor == "Intel Open Source Technology Center")
     {
       driver = DriverDetails::DRIVER_I965;
-      if (srenderer.find("Sandybridge") != std::string::npos)
+      if (srenderer.contains("Sandybridge"))
         family = DriverDetails::Family::INTEL_SANDY;
-      else if (srenderer.find("Ivybridge") != std::string::npos)
+      else if (srenderer.contains("Ivybridge"))
         family = DriverDetails::Family::INTEL_IVY;
     }
-    else if (srenderer.find("AMD") != std::string::npos ||
-             srenderer.find("ATI") != std::string::npos)
+    else if (srenderer.contains("AMD") || srenderer.contains("ATI"))
     {
       driver = DriverDetails::DRIVER_R600;
     }
diff --git a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
index c6ff5e148d..d7e23dd678 100644
--- a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
+++ b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
@@ -515,7 +515,7 @@ void VulkanContext::PopulateBackendInfoFeatures(BackendInfo* backend_info, VkPhy
 
   // Only Apple family GPUs support framebuffer fetch.
   // We currently use a hacked MoltenVK to implement this, so don't attempt outside of MVK
-  if (is_moltenvk && (vendor_id == 0x106B || device_name.find("Apple") != std::string::npos))
+  if (is_moltenvk && (vendor_id == 0x106B || device_name.contains("Apple")))
   {
     backend_info->bSupportsFramebufferFetch = true;
   }
@@ -980,12 +980,11 @@ void VulkanContext::InitDriverDetails()
     vendor = DriverDetails::VENDOR_NVIDIA;
     driver = DriverDetails::DRIVER_NVIDIA;
   }
-  else if (vendor_id == 0x1002 || vendor_id == 0x1022 ||
-           device_name.find("AMD") != std::string::npos)
+  else if (vendor_id == 0x1002 || vendor_id == 0x1022 || device_name.contains("AMD"))
   {
     // RADV always advertises its name in the device string.
     // If not RADV, assume the AMD binary driver.
-    if (device_name.find("RADV") != std::string::npos)
+    if (device_name.contains("RADV"))
     {
       vendor = DriverDetails::VENDOR_MESA;
       driver = DriverDetails::DRIVER_R600;
@@ -996,8 +995,7 @@ void VulkanContext::InitDriverDetails()
       driver = DriverDetails::DRIVER_ATI;
     }
   }
-  else if (vendor_id == 0x8086 || vendor_id == 0x8087 ||
-           device_name.find("Intel") != std::string::npos)
+  else if (vendor_id == 0x8086 || vendor_id == 0x8087 || device_name.contains("Intel"))
   {
 // Apart from the driver version, Intel does not appear to provide a way to
 // differentiate between anv and the binary driver (Skylake+). Assume to be
@@ -1010,25 +1008,25 @@ void VulkanContext::InitDriverDetails()
     driver = DriverDetails::DRIVER_I965;
 #endif
   }
-  else if (vendor_id == 0x5143 || device_name.find("Adreno") != std::string::npos)
+  else if (vendor_id == 0x5143 || device_name.contains("Adreno"))
   {
     // Currently only the Qualcomm binary driver exists for Adreno.
     vendor = DriverDetails::VENDOR_QUALCOMM;
     driver = DriverDetails::DRIVER_QUALCOMM;
   }
-  else if (vendor_id == 0x13B6 || device_name.find("Mali") != std::string::npos)
+  else if (vendor_id == 0x13B6 || device_name.contains("Mali"))
   {
     // Currently only the ARM binary driver exists for Mali.
     vendor = DriverDetails::VENDOR_ARM;
     driver = DriverDetails::DRIVER_ARM;
   }
-  else if (vendor_id == 0x1010 || device_name.find("PowerVR") != std::string::npos)
+  else if (vendor_id == 0x1010 || device_name.contains("PowerVR"))
   {
     // Currently only the binary driver exists for PowerVR.
     vendor = DriverDetails::VENDOR_IMGTEC;
     driver = DriverDetails::DRIVER_IMGTEC;
   }
-  else if (device_name.find("Apple") != std::string::npos)
+  else if (device_name.contains("Apple"))
   {
     vendor = DriverDetails::VENDOR_APPLE;
     driver = DriverDetails::DRIVER_PORTABILITY;
diff --git a/Source/Core/VideoCommon/Assets/ShaderAsset.cpp b/Source/Core/VideoCommon/Assets/ShaderAsset.cpp
index dbe4c5cb02..d00d856446 100644
--- a/Source/Core/VideoCommon/Assets/ShaderAsset.cpp
+++ b/Source/Core/VideoCommon/Assets/ShaderAsset.cpp
@@ -278,7 +278,7 @@ bool PixelShaderData::FromJson(const VideoCommon::CustomAssetLibrary::AssetID& a
 
   for (const auto& [name, property] : data->m_properties)
   {
-    if (data->m_shader_source.find(name) == std::string::npos)
+    if (!data->m_shader_source.contains(name))
     {
       ERROR_LOG_FMT(
           VIDEO,