diff --git a/AK/ByteString.cpp b/AK/ByteString.cpp
index 0ff35add19c..2f4d87ca32a 100644
--- a/AK/ByteString.cpp
+++ b/AK/ByteString.cpp
@@ -59,7 +59,7 @@ ByteString ByteString::isolated_copy() const
     char* buffer;
     auto impl = StringImpl::create_uninitialized(length(), buffer);
     memcpy(buffer, m_impl->characters(), m_impl->length());
-    return ByteString(move(*impl));
+    return impl;
 }
 
 ByteString ByteString::substring(size_t start, size_t length) const
@@ -185,7 +185,7 @@ ByteString ByteString::repeated(char ch, size_t count)
     char* buffer;
     auto impl = StringImpl::create_uninitialized(count, buffer);
     memset(buffer, ch, count);
-    return *impl;
+    return impl;
 }
 
 ByteString ByteString::repeated(StringView string, size_t count)
@@ -196,7 +196,7 @@ ByteString ByteString::repeated(StringView string, size_t count)
     auto impl = StringImpl::create_uninitialized(count * string.length(), buffer);
     for (size_t i = 0; i < count; i++)
         __builtin_memcpy(buffer + i * string.length(), string.characters_without_null_termination(), string.length());
-    return *impl;
+    return impl;
 }
 
 ByteString ByteString::bijective_base_from(size_t value, unsigned base, StringView map)
@@ -334,7 +334,7 @@ ByteString escape_html_entities(StringView html)
 }
 
 ByteString::ByteString(FlyString const& string)
-    : m_impl(*StringImpl::create(string.bytes()))
+    : m_impl(StringImpl::create(string.bytes()))
 {
 }
 
@@ -349,7 +349,7 @@ ByteString ByteString::to_lowercase() const
     for (auto [i, character] : enumerate(view()))
         buffer[i] = static_cast<char>(to_ascii_lowercase(character));
 
-    return *impl;
+    return impl;
 }
 
 ByteString ByteString::to_uppercase() const
@@ -363,7 +363,7 @@ ByteString ByteString::to_uppercase() const
     for (auto [i, character] : enumerate(view()))
         buffer[i] = static_cast<char>(to_ascii_uppercase(character));
 
-    return *impl;
+    return impl;
 }
 
 ByteString ByteString::to_snakecase() const
@@ -410,7 +410,7 @@ ErrorOr<ByteString> ByteString::from_utf8(ReadonlyBytes bytes)
 {
     if (!Utf8View(bytes).validate())
         return Error::from_string_literal("ByteString::from_utf8: Input was not valid UTF-8");
-    return ByteString { *StringImpl::create(bytes) };
+    return StringImpl::create(bytes);
 }
 
 }
diff --git a/AK/ByteString.h b/AK/ByteString.h
index c0b0607c617..e179dca909c 100644
--- a/AK/ByteString.h
+++ b/AK/ByteString.h
@@ -46,7 +46,7 @@ public:
     }
 
     ByteString(StringView view)
-        : m_impl(*StringImpl::create(view.characters_without_null_termination(), view.length()))
+        : m_impl(StringImpl::create(view.characters_without_null_termination(), view.length()))
     {
     }
 
@@ -62,17 +62,17 @@ public:
     }
 
     ByteString(char const* cstring, ShouldChomp shouldChomp = NoChomp)
-        : m_impl(*StringImpl::create(cstring, shouldChomp))
+        : m_impl(StringImpl::create(cstring, shouldChomp))
     {
     }
 
     ByteString(char const* cstring, size_t length, ShouldChomp shouldChomp = NoChomp)
-        : m_impl(*StringImpl::create(cstring, length, shouldChomp))
+        : m_impl(StringImpl::create(cstring, length, shouldChomp))
     {
     }
 
     explicit ByteString(ReadonlyBytes bytes, ShouldChomp shouldChomp = NoChomp)
-        : m_impl(*StringImpl::create(bytes, shouldChomp))
+        : m_impl(StringImpl::create(bytes, shouldChomp))
     {
     }
 
@@ -82,7 +82,7 @@ public:
     }
 
     ByteString(NonnullRefPtr<StringImpl const>&& impl)
-        : m_impl(*move(impl))
+        : m_impl(move(impl))
     {
     }
 
@@ -264,7 +264,7 @@ public:
     template<OneOf<ReadonlyBytes, Bytes> T>
     ByteString& operator=(T bytes)
     {
-        m_impl = *StringImpl::create(bytes);
+        m_impl = StringImpl::create(bytes);
         return *this;
     }
 
diff --git a/AK/StringImpl.cpp b/AK/StringImpl.cpp
index b0809690ca5..146786e970b 100644
--- a/AK/StringImpl.cpp
+++ b/AK/StringImpl.cpp
@@ -40,7 +40,7 @@ NonnullRefPtr<StringImpl const> StringImpl::create_uninitialized(size_t length,
     return new_stringimpl;
 }
 
-RefPtr<StringImpl const> StringImpl::create(char const* cstring, size_t length, ShouldChomp should_chomp)
+NonnullRefPtr<StringImpl const> StringImpl::create(char const* cstring, size_t length, ShouldChomp should_chomp)
 {
     if (should_chomp) {
         while (length) {
@@ -62,7 +62,7 @@ RefPtr<StringImpl const> StringImpl::create(char const* cstring, size_t length,
     return new_stringimpl;
 }
 
-RefPtr<StringImpl const> StringImpl::create(char const* cstring, ShouldChomp shouldChomp)
+NonnullRefPtr<StringImpl const> StringImpl::create(char const* cstring, ShouldChomp shouldChomp)
 {
     if (!cstring || !*cstring)
         return the_empty_stringimpl();
@@ -70,12 +70,12 @@ RefPtr<StringImpl const> StringImpl::create(char const* cstring, ShouldChomp sho
     return create(cstring, strlen(cstring), shouldChomp);
 }
 
-RefPtr<StringImpl const> StringImpl::create(ReadonlyBytes bytes, ShouldChomp shouldChomp)
+NonnullRefPtr<StringImpl const> StringImpl::create(ReadonlyBytes bytes, ShouldChomp shouldChomp)
 {
     return StringImpl::create(reinterpret_cast<char const*>(bytes.data()), bytes.size(), shouldChomp);
 }
 
-RefPtr<StringImpl const> StringImpl::create_lowercased(char const* cstring, size_t length)
+NonnullRefPtr<StringImpl const> StringImpl::create_lowercased(char const* cstring, size_t length)
 {
     if (!length)
         return the_empty_stringimpl();
@@ -86,7 +86,7 @@ RefPtr<StringImpl const> StringImpl::create_lowercased(char const* cstring, size
     return impl;
 }
 
-RefPtr<StringImpl const> StringImpl::create_uppercased(char const* cstring, size_t length)
+NonnullRefPtr<StringImpl const> StringImpl::create_uppercased(char const* cstring, size_t length)
 {
     if (!length)
         return the_empty_stringimpl();
diff --git a/AK/StringImpl.h b/AK/StringImpl.h
index c5f4e18c62c..a7ea6be8192 100644
--- a/AK/StringImpl.h
+++ b/AK/StringImpl.h
@@ -7,8 +7,8 @@
 #pragma once
 
 #include <AK/Badge.h>
+#include <AK/NonnullRefPtr.h>
 #include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
 #include <AK/Span.h>
 #include <AK/Types.h>
 #include <AK/kmalloc.h>
@@ -25,11 +25,11 @@ size_t allocation_size_for_stringimpl(size_t length);
 class StringImpl : public RefCounted<StringImpl> {
 public:
     static NonnullRefPtr<StringImpl const> create_uninitialized(size_t length, char*& buffer);
-    static RefPtr<StringImpl const> create(char const* cstring, ShouldChomp = NoChomp);
-    static RefPtr<StringImpl const> create(char const* cstring, size_t length, ShouldChomp = NoChomp);
-    static RefPtr<StringImpl const> create(ReadonlyBytes, ShouldChomp = NoChomp);
-    static RefPtr<StringImpl const> create_lowercased(char const* cstring, size_t length);
-    static RefPtr<StringImpl const> create_uppercased(char const* cstring, size_t length);
+    static NonnullRefPtr<StringImpl const> create(char const* cstring, ShouldChomp = NoChomp);
+    static NonnullRefPtr<StringImpl const> create(char const* cstring, size_t length, ShouldChomp = NoChomp);
+    static NonnullRefPtr<StringImpl const> create(ReadonlyBytes, ShouldChomp = NoChomp);
+    static NonnullRefPtr<StringImpl const> create_lowercased(char const* cstring, size_t length);
+    static NonnullRefPtr<StringImpl const> create_uppercased(char const* cstring, size_t length);
 
     void operator delete(void* ptr)
     {