diff --git a/AK/Demangle.h b/AK/Demangle.h
index dbba1b6c7edbab8c8bdd5d7e107c46b4af6acb41..42dc1cdae4a4c2237508edd3ec3a4c25a125f1b6 100644
--- a/AK/Demangle.h
+++ b/AK/Demangle.h
@@ -41,7 +41,7 @@ inline String demangle(const StringView& name)
     return name;
 #else
     int status = 0;
-    auto* demangled_name = abi::__cxa_demangle(String(name).characters(), nullptr, nullptr, &status);
+    auto* demangled_name = abi::__cxa_demangle(name.to_string().characters(), nullptr, nullptr, &status);
     auto string = String(status == 0 ? demangled_name : name);
     if (status == 0)
         kfree(demangled_name);
diff --git a/Applications/IRCClient/IRCClient.cpp b/Applications/IRCClient/IRCClient.cpp
index a052009e71d13db1d9e265401da1522716056065..f6f48371952438eba4b71e8ddf8a445de61ce5cc 100644
--- a/Applications/IRCClient/IRCClient.cpp
+++ b/Applications/IRCClient/IRCClient.cpp
@@ -870,7 +870,7 @@ void IRCClient::handle_user_command(const String& input)
             return;
         int command_length = command.length() + 1;
         StringView raw_message = input.view().substring_view(command_length, input.view().length() - command_length);
-        send(String::format("%s\r\n", String(raw_message).characters()));
+        send(String::format("%s\r\n", raw_message.to_string().characters()));
         return;
     }
     if (command == "/NICK") {
diff --git a/Applications/PaintBrush/ToolboxWidget.cpp b/Applications/PaintBrush/ToolboxWidget.cpp
index 5cf2705a6793b0622eae8e9627a555404994433f..4af60eac01c3318cb2c52e4403b2ebe64bb1ce97 100644
--- a/Applications/PaintBrush/ToolboxWidget.cpp
+++ b/Applications/PaintBrush/ToolboxWidget.cpp
@@ -80,7 +80,7 @@ ToolboxWidget::ToolboxWidget()
         button.set_checkable(true);
         button.set_exclusive(true);
 
-        button.set_icon(Gfx::Bitmap::load_from_file(String::format("/res/icons/paintbrush/%s.png", String(icon_name).characters())));
+        button.set_icon(Gfx::Bitmap::load_from_file(String::format("/res/icons/paintbrush/%s.png", icon_name.to_string().characters())));
 
         button.on_checked = [button = &button](auto checked) {
             if (checked)
diff --git a/DevTools/ProfileViewer/Profile.cpp b/DevTools/ProfileViewer/Profile.cpp
index b6653c876df2ffd32bf0674df4a3fe95dd174685..944869086e43a35f17a7527f0d9a50a26ff2db63 100644
--- a/DevTools/ProfileViewer/Profile.cpp
+++ b/DevTools/ProfileViewer/Profile.cpp
@@ -167,7 +167,7 @@ OwnPtr<Profile> Profile::load_from_perfcore_file(const StringView& path)
 {
     auto file = Core::File::construct(path);
     if (!file->open(Core::IODevice::ReadOnly)) {
-        fprintf(stderr, "Unable to open %s, error: %s\n", String(path).characters(), file->error_string());
+        fprintf(stderr, "Unable to open %s, error: %s\n", path.to_string().characters(), file->error_string());
         return nullptr;
     }
 
diff --git a/Libraries/LibCore/DirIterator.cpp b/Libraries/LibCore/DirIterator.cpp
index de9707c0ff18fa67644c52985e44e523b6241cdf..537b29eb8517db683348927d23742b32e135543c 100644
--- a/Libraries/LibCore/DirIterator.cpp
+++ b/Libraries/LibCore/DirIterator.cpp
@@ -33,7 +33,7 @@ DirIterator::DirIterator(const StringView& path, Flags flags)
     : m_path(path)
     , m_flags(flags)
 {
-    m_dir = opendir(String(path).characters());
+    m_dir = opendir(path.to_string().characters());
     if (!m_dir) {
         m_error = errno;
     }
diff --git a/Libraries/LibGUI/FilePicker.cpp b/Libraries/LibGUI/FilePicker.cpp
index b4e7e4d6f8e4c7f409f5388783e40a4f229bd792..019a47d5906b4bb2d045e196ac5f6f468df02823 100644
--- a/Libraries/LibGUI/FilePicker.cpp
+++ b/Libraries/LibGUI/FilePicker.cpp
@@ -307,7 +307,7 @@ void FilePicker::on_file_return()
 bool FilePicker::file_exists(const StringView& path)
 {
     struct stat st;
-    int rc = stat(String(path).characters(), &st);
+    int rc = stat(path.to_string().characters(), &st);
     if (rc < 0) {
         if (errno == ENOENT)
             return false;
diff --git a/Libraries/LibGUI/Icon.cpp b/Libraries/LibGUI/Icon.cpp
index a6f1254a178779e01478be5c382ad3c24f9cd91a..01e13443ef32d5f765b3fae1d8b2f13a3f354c7c 100644
--- a/Libraries/LibGUI/Icon.cpp
+++ b/Libraries/LibGUI/Icon.cpp
@@ -94,8 +94,8 @@ void IconImpl::set_bitmap_for_size(int size, RefPtr<Gfx::Bitmap>&& bitmap)
 
 Icon Icon::default_icon(const StringView& name)
 {
-    auto bitmap16 = Gfx::Bitmap::load_from_file(String::format("/res/icons/16x16/%s.png", String(name).characters()));
-    auto bitmap32 = Gfx::Bitmap::load_from_file(String::format("/res/icons/32x32/%s.png", String(name).characters()));
+    auto bitmap16 = Gfx::Bitmap::load_from_file(String::format("/res/icons/16x16/%s.png", name.to_string().characters()));
+    auto bitmap32 = Gfx::Bitmap::load_from_file(String::format("/res/icons/32x32/%s.png", name.to_string().characters()));
     return Icon(move(bitmap16), move(bitmap32));
 }
 
diff --git a/Libraries/LibGfx/Bitmap.cpp b/Libraries/LibGfx/Bitmap.cpp
index d254b60dae933aace826c25e0483aade256bd798..e885833110ada8eefcf01d4cc727bd91f9496ee3 100644
--- a/Libraries/LibGfx/Bitmap.cpp
+++ b/Libraries/LibGfx/Bitmap.cpp
@@ -194,7 +194,7 @@ Bitmap::~Bitmap()
 void Bitmap::set_mmap_name(const StringView& name)
 {
     ASSERT(m_needs_munmap);
-    ::set_mmap_name(m_data, size_in_bytes(), String(name).characters());
+    ::set_mmap_name(m_data, size_in_bytes(), name.to_string().characters());
 }
 
 void Bitmap::fill(Color color)
diff --git a/Libraries/LibGfx/Color.cpp b/Libraries/LibGfx/Color.cpp
index 80de68c49620008496270af455e2ee8121cc0c81..41e9a013ea6cf477471dd5b57ec6aa8097a34c58 100644
--- a/Libraries/LibGfx/Color.cpp
+++ b/Libraries/LibGfx/Color.cpp
@@ -182,7 +182,7 @@ static Optional<Color> parse_rgba_color(const StringView& string)
     if (!ok)
         return {};
 
-    double alpha = strtod(String(parts[3]).characters(), nullptr);
+    double alpha = strtod(parts[3].to_string().characters(), nullptr);
     int a = alpha * 255;
 
     if (r < 0 || r > 255)
diff --git a/Userland/mount.cpp b/Userland/mount.cpp
index 195d74405615551e37dfd71e8a3e2ba5dd27ae46..c3b3e8c0f7c96bcf199fbc17b3995a11f22388d3 100644
--- a/Userland/mount.cpp
+++ b/Userland/mount.cpp
@@ -51,7 +51,7 @@ int parse_options(const StringView& options)
         else if (part == "bind")
             flags |= MS_BIND;
         else
-            fprintf(stderr, "Ignoring invalid option: %s\n", String(part).characters());
+            fprintf(stderr, "Ignoring invalid option: %s\n", part.to_string().characters());
     }
     return flags;
 }