diff --git a/httplib.h b/httplib.h
index c875fb3..ec6faf0 100644
--- a/httplib.h
+++ b/httplib.h
@@ -553,6 +553,15 @@ struct MultipartFormData {
 using MultipartFormDataItems = std::vector<MultipartFormData>;
 using MultipartFormDataMap = std::multimap<std::string, MultipartFormData>;
 
+struct MultipartFormDataForClientInput {
+  std::string name;
+  std::string content;
+  std::string filename;
+  std::string content_type;
+};
+using MultipartFormDataItemsForClientInput =
+    std::vector<MultipartFormDataForClientInput>;
+
 class DataSink {
 public:
   DataSink() : os(&sb_), sb_(*this) {}
@@ -1330,13 +1339,15 @@ public:
               const Params &params);
   Result Post(const std::string &path, const Headers &headers,
               const Params &params, Progress progress);
-  Result Post(const std::string &path, const MultipartFormDataItems &items);
+  Result Post(const std::string &path,
+              const MultipartFormDataItemsForClientInput &items);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items);
+              const MultipartFormDataItemsForClientInput &items);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items, const std::string &boundary);
+              const MultipartFormDataItemsForClientInput &items,
+              const std::string &boundary);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items,
+              const MultipartFormDataItemsForClientInput &items,
               const MultipartFormDataProviderItems &provider_items);
 
   Result Put(const std::string &path);
@@ -1372,13 +1383,15 @@ public:
              const Params &params);
   Result Put(const std::string &path, const Headers &headers,
              const Params &params, Progress progress);
-  Result Put(const std::string &path, const MultipartFormDataItems &items);
+  Result Put(const std::string &path,
+             const MultipartFormDataItemsForClientInput &items);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items);
+             const MultipartFormDataItemsForClientInput &items);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items, const std::string &boundary);
+             const MultipartFormDataItemsForClientInput &items,
+             const std::string &boundary);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items,
+             const MultipartFormDataItemsForClientInput &items,
              const MultipartFormDataProviderItems &provider_items);
 
   Result Patch(const std::string &path);
@@ -1664,7 +1677,8 @@ private:
       ContentProviderWithoutLength content_provider_without_length,
       const std::string &content_type, Progress progress);
   ContentProviderWithoutLength get_multipart_content_provider(
-      const std::string &boundary, const MultipartFormDataItems &items,
+      const std::string &boundary,
+      const MultipartFormDataItemsForClientInput &items,
       const MultipartFormDataProviderItems &provider_items) const;
 
   std::string adjust_host_string(const std::string &host) const;
@@ -1769,13 +1783,15 @@ public:
               const Params &params);
   Result Post(const std::string &path, const Headers &headers,
               const Params &params, Progress progress);
-  Result Post(const std::string &path, const MultipartFormDataItems &items);
+  Result Post(const std::string &path,
+              const MultipartFormDataItemsForClientInput &items);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items);
+              const MultipartFormDataItemsForClientInput &items);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items, const std::string &boundary);
+              const MultipartFormDataItemsForClientInput &items,
+              const std::string &boundary);
   Result Post(const std::string &path, const Headers &headers,
-              const MultipartFormDataItems &items,
+              const MultipartFormDataItemsForClientInput &items,
               const MultipartFormDataProviderItems &provider_items);
 
   Result Put(const std::string &path);
@@ -1811,13 +1827,15 @@ public:
              const Params &params);
   Result Put(const std::string &path, const Headers &headers,
              const Params &params, Progress progress);
-  Result Put(const std::string &path, const MultipartFormDataItems &items);
+  Result Put(const std::string &path,
+             const MultipartFormDataItemsForClientInput &items);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items);
+             const MultipartFormDataItemsForClientInput &items);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items, const std::string &boundary);
+             const MultipartFormDataItemsForClientInput &items,
+             const std::string &boundary);
   Result Put(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items,
+             const MultipartFormDataItemsForClientInput &items,
              const MultipartFormDataProviderItems &provider_items);
 
   Result Patch(const std::string &path);
@@ -5331,7 +5349,7 @@ serialize_multipart_formdata_get_content_type(const std::string &boundary) {
 }
 
 inline std::string
-serialize_multipart_formdata(const MultipartFormDataItems &items,
+serialize_multipart_formdata(const MultipartFormDataItemsForClientInput &items,
                              const std::string &boundary, bool finish = true) {
   std::string body;
 
@@ -8370,7 +8388,8 @@ inline bool ClientImpl::process_request(Stream &strm, Request &req,
 }
 
 inline ContentProviderWithoutLength ClientImpl::get_multipart_content_provider(
-    const std::string &boundary, const MultipartFormDataItems &items,
+    const std::string &boundary,
+    const MultipartFormDataItemsForClientInput &items,
     const MultipartFormDataProviderItems &provider_items) const {
   size_t cur_item = 0;
   size_t cur_start = 0;
@@ -8671,13 +8690,15 @@ inline Result ClientImpl::Post(const std::string &path, const Headers &headers,
               progress);
 }
 
-inline Result ClientImpl::Post(const std::string &path,
-                               const MultipartFormDataItems &items) {
+inline Result
+ClientImpl::Post(const std::string &path,
+                 const MultipartFormDataItemsForClientInput &items) {
   return Post(path, Headers(), items);
 }
 
-inline Result ClientImpl::Post(const std::string &path, const Headers &headers,
-                               const MultipartFormDataItems &items) {
+inline Result
+ClientImpl::Post(const std::string &path, const Headers &headers,
+                 const MultipartFormDataItemsForClientInput &items) {
   const auto &boundary = detail::make_multipart_data_boundary();
   const auto &content_type =
       detail::serialize_multipart_formdata_get_content_type(boundary);
@@ -8685,9 +8706,10 @@ inline Result ClientImpl::Post(const std::string &path, const Headers &headers,
   return Post(path, headers, body, content_type);
 }
 
-inline Result ClientImpl::Post(const std::string &path, const Headers &headers,
-                               const MultipartFormDataItems &items,
-                               const std::string &boundary) {
+inline Result
+ClientImpl::Post(const std::string &path, const Headers &headers,
+                 const MultipartFormDataItemsForClientInput &items,
+                 const std::string &boundary) {
   if (!detail::is_multipart_boundary_chars_valid(boundary)) {
     return Result{nullptr, Error::UnsupportedMultipartBoundaryChars};
   }
@@ -8700,7 +8722,7 @@ inline Result ClientImpl::Post(const std::string &path, const Headers &headers,
 
 inline Result
 ClientImpl::Post(const std::string &path, const Headers &headers,
-                 const MultipartFormDataItems &items,
+                 const MultipartFormDataItemsForClientInput &items,
                  const MultipartFormDataProviderItems &provider_items) {
   const auto &boundary = detail::make_multipart_data_boundary();
   const auto &content_type =
@@ -8811,13 +8833,15 @@ inline Result ClientImpl::Put(const std::string &path, const Headers &headers,
              progress);
 }
 
-inline Result ClientImpl::Put(const std::string &path,
-                              const MultipartFormDataItems &items) {
+inline Result
+ClientImpl::Put(const std::string &path,
+                const MultipartFormDataItemsForClientInput &items) {
   return Put(path, Headers(), items);
 }
 
-inline Result ClientImpl::Put(const std::string &path, const Headers &headers,
-                              const MultipartFormDataItems &items) {
+inline Result
+ClientImpl::Put(const std::string &path, const Headers &headers,
+                const MultipartFormDataItemsForClientInput &items) {
   const auto &boundary = detail::make_multipart_data_boundary();
   const auto &content_type =
       detail::serialize_multipart_formdata_get_content_type(boundary);
@@ -8826,7 +8850,7 @@ inline Result ClientImpl::Put(const std::string &path, const Headers &headers,
 }
 
 inline Result ClientImpl::Put(const std::string &path, const Headers &headers,
-                              const MultipartFormDataItems &items,
+                              const MultipartFormDataItemsForClientInput &items,
                               const std::string &boundary) {
   if (!detail::is_multipart_boundary_chars_valid(boundary)) {
     return Result{nullptr, Error::UnsupportedMultipartBoundaryChars};
@@ -8840,7 +8864,7 @@ inline Result ClientImpl::Put(const std::string &path, const Headers &headers,
 
 inline Result
 ClientImpl::Put(const std::string &path, const Headers &headers,
-                const MultipartFormDataItems &items,
+                const MultipartFormDataItemsForClientInput &items,
                 const MultipartFormDataProviderItems &provider_items) {
   const auto &boundary = detail::make_multipart_data_boundary();
   const auto &content_type =
@@ -10251,21 +10275,21 @@ inline Result Client::Post(const std::string &path, const Headers &headers,
   return cli_->Post(path, headers, params, progress);
 }
 inline Result Client::Post(const std::string &path,
-                           const MultipartFormDataItems &items) {
+                           const MultipartFormDataItemsForClientInput &items) {
   return cli_->Post(path, items);
 }
 inline Result Client::Post(const std::string &path, const Headers &headers,
-                           const MultipartFormDataItems &items) {
+                           const MultipartFormDataItemsForClientInput &items) {
   return cli_->Post(path, headers, items);
 }
 inline Result Client::Post(const std::string &path, const Headers &headers,
-                           const MultipartFormDataItems &items,
+                           const MultipartFormDataItemsForClientInput &items,
                            const std::string &boundary) {
   return cli_->Post(path, headers, items, boundary);
 }
 inline Result
 Client::Post(const std::string &path, const Headers &headers,
-             const MultipartFormDataItems &items,
+             const MultipartFormDataItemsForClientInput &items,
              const MultipartFormDataProviderItems &provider_items) {
   return cli_->Post(path, headers, items, provider_items);
 }
@@ -10338,21 +10362,21 @@ inline Result Client::Put(const std::string &path, const Headers &headers,
   return cli_->Put(path, headers, params, progress);
 }
 inline Result Client::Put(const std::string &path,
-                          const MultipartFormDataItems &items) {
+                          const MultipartFormDataItemsForClientInput &items) {
   return cli_->Put(path, items);
 }
 inline Result Client::Put(const std::string &path, const Headers &headers,
-                          const MultipartFormDataItems &items) {
+                          const MultipartFormDataItemsForClientInput &items) {
   return cli_->Put(path, headers, items);
 }
 inline Result Client::Put(const std::string &path, const Headers &headers,
-                          const MultipartFormDataItems &items,
+                          const MultipartFormDataItemsForClientInput &items,
                           const std::string &boundary) {
   return cli_->Put(path, headers, items, boundary);
 }
 inline Result
 Client::Put(const std::string &path, const Headers &headers,
-            const MultipartFormDataItems &items,
+            const MultipartFormDataItemsForClientInput &items,
             const MultipartFormDataProviderItems &provider_items) {
   return cli_->Put(path, headers, items, provider_items);
 }
diff --git a/test/test.cc b/test/test.cc
index b67c87f..297a694 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -3161,7 +3161,7 @@ TEST_F(ServerTest, GetMethod200) {
 
 TEST(BenchmarkTest, SimpleGetPerformance) {
   Server svr;
-  
+
   svr.Get("/benchmark", [&](const Request & /*req*/, Response &res) {
     res.set_content("Benchmark Response", "text/plain");
   });
@@ -3176,13 +3176,13 @@ TEST(BenchmarkTest, SimpleGetPerformance) {
   svr.wait_until_ready();
 
   Client cli("localhost", PORT);
-  
+
   const int NUM_REQUESTS = 50;
   const int MAX_AVERAGE_MS = 5;
-  
+
   auto warmup = cli.Get("/benchmark");
   ASSERT_TRUE(warmup);
-  
+
   auto start = std::chrono::high_resolution_clock::now();
   for (int i = 0; i < NUM_REQUESTS; ++i) {
     auto res = cli.Get("/benchmark");
@@ -3190,14 +3190,17 @@ TEST(BenchmarkTest, SimpleGetPerformance) {
     EXPECT_EQ(StatusCode::OK_200, res->status);
   }
   auto end = std::chrono::high_resolution_clock::now();
-  
-  auto total_ms = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
+
+  auto total_ms =
+      std::chrono::duration_cast<std::chrono::milliseconds>(end - start)
+          .count();
   double avg_ms = static_cast<double>(total_ms) / NUM_REQUESTS;
-  
-  std::cout << "Standalone: " << NUM_REQUESTS << " requests in " << total_ms 
+
+  std::cout << "Standalone: " << NUM_REQUESTS << " requests in " << total_ms
             << "ms (avg: " << avg_ms << "ms)" << std::endl;
-  
-  EXPECT_LE(avg_ms, MAX_AVERAGE_MS) << "Standalone test too slow: " << avg_ms << "ms (Issue #1777)";
+
+  EXPECT_LE(avg_ms, MAX_AVERAGE_MS)
+      << "Standalone test too slow: " << avg_ms << "ms (Issue #1777)";
 }
 
 TEST_F(ServerTest, GetEmptyFile) {
@@ -3830,7 +3833,7 @@ TEST_F(ServerTest, TooLongHeader) {
 TEST_F(ServerTest, HeaderCountAtLimit) {
   // Test with headers just under the 100 limit
   httplib::Headers headers;
-  
+
   // Add 95 custom headers (the client will add Host, User-Agent, Accept, etc.)
   // This should keep us just under the 100 header limit
   for (int i = 0; i < 95; i++) {
@@ -3838,29 +3841,27 @@ TEST_F(ServerTest, HeaderCountAtLimit) {
     std::string value = "value" + std::to_string(i);
     headers.emplace(name, value);
   }
-  
+
   // This should work fine as we're under the limit
   auto res = cli_.Get("/hi", headers);
   EXPECT_TRUE(res);
-  if (res) {
-    EXPECT_EQ(StatusCode::OK_200, res->status);
-  }
+  if (res) { EXPECT_EQ(StatusCode::OK_200, res->status); }
 }
 
 TEST_F(ServerTest, HeaderCountExceedsLimit) {
   // Test with many headers to exceed the 100 limit
   httplib::Headers headers;
-  
+
   // Add 150 headers to definitely exceed the 100 limit
   for (int i = 0; i < 150; i++) {
     std::string name = "X-Test-Header-" + std::to_string(i);
     std::string value = "value" + std::to_string(i);
     headers.emplace(name, value);
   }
-  
+
   // This should fail due to exceeding header count limit
   auto res = cli_.Get("/hi", headers);
-  
+
   // The request should either fail or return 400 Bad Request
   if (res) {
     // If we get a response, it should be 400 Bad Request
@@ -3911,19 +3912,20 @@ TEST_F(ServerTest, PlusSignEncoding) {
 TEST_F(ServerTest, HeaderCountSecurityTest) {
   // This test simulates a potential DoS attack using many headers
   // to verify our security fix prevents memory exhaustion
-  
+
   httplib::Headers attack_headers;
-  
-  // Attempt to add many headers like an attacker would (200 headers to far exceed limit)
+
+  // Attempt to add many headers like an attacker would (200 headers to far
+  // exceed limit)
   for (int i = 0; i < 200; i++) {
     std::string name = "X-Attack-Header-" + std::to_string(i);
     std::string value = "attack_payload_" + std::to_string(i);
     attack_headers.emplace(name, value);
   }
-  
+
   // Try to POST with excessive headers
   auto res = cli_.Post("/", attack_headers, "test_data", "text/plain");
-  
+
   // Should either fail or return 400 Bad Request due to security limit
   if (res) {
     // If we get a response, it should be 400 Bad Request
@@ -3935,7 +3937,7 @@ TEST_F(ServerTest, HeaderCountSecurityTest) {
 }
 
 TEST_F(ServerTest, MultipartFormData) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"text1", "text default", "", ""},
       {"text2", "aωb", "", ""},
       {"file1", "h\ne\n\nl\nl\no\n", "hello.txt", "text/plain"},
@@ -3950,7 +3952,7 @@ TEST_F(ServerTest, MultipartFormData) {
 }
 
 TEST_F(ServerTest, MultipartFormDataMultiFileValues) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"text", "default text", "", ""},
 
       {"multi_text1", "aaaaa", "", ""},
@@ -4890,7 +4892,7 @@ TEST_F(ServerTest, PostContentReceiver) {
 }
 
 TEST_F(ServerTest, PostMultipartFileContentReceiver) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"text1", "text default", "", ""},
       {"text2", "aωb", "", ""},
       {"file1", "h\ne\n\nl\nl\no\n", "hello.txt", "text/plain"},
@@ -4905,7 +4907,7 @@ TEST_F(ServerTest, PostMultipartFileContentReceiver) {
 }
 
 TEST_F(ServerTest, PostMultipartPlusBoundary) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"text1", "text default", "", ""},
       {"text2", "aωb", "", ""},
       {"file1", "h\ne\n\nl\nl\no\n", "hello.txt", "text/plain"},
@@ -5160,7 +5162,7 @@ TEST_F(ServerTest, NoGzipWithContentReceiver) {
 }
 
 TEST_F(ServerTest, MultipartFormDataGzip) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"key1", "test", "", ""},
       {"key2", "--abcdefg123", "", ""},
   };
@@ -5324,7 +5326,7 @@ TEST_F(ServerTest, NoZstdWithContentReceiver) {
 
 // TODO: How to enable zstd ??
 TEST_F(ServerTest, MultipartFormDataZstd) {
-  MultipartFormDataItems items = {
+  MultipartFormDataItemsForClientInput items = {
       {"key1", "test", "", ""},
       {"key2", "--abcdefg123", "", ""},
   };
@@ -7507,7 +7509,7 @@ TEST(MultipartFormDataTest, LargeData) {
     Client cli("https://localhost:8080");
     cli.enable_server_certificate_verification(false);
 
-    MultipartFormDataItems items{
+    MultipartFormDataItemsForClientInput items{
         {"document", buffer.str(), "2MB_data", "application/octet-stream"},
         {"hello", "world", "", ""},
     };
@@ -7650,7 +7652,7 @@ TEST(MultipartFormDataTest, DataProviderItems) {
     Client cli("https://localhost:8080");
     cli.enable_server_certificate_verification(false);
 
-    MultipartFormDataItems items{
+    MultipartFormDataItemsForClientInput items{
         {"name1", "Testing123", "filename1", "application/octet-stream"},
         {"name2", "Testing456", "", ""}, // not a file
     };
@@ -7855,7 +7857,7 @@ TEST(MultipartFormDataTest, PostCustomBoundary) {
     Client cli("https://localhost:8080");
     cli.enable_server_certificate_verification(false);
 
-    MultipartFormDataItems items{
+    MultipartFormDataItemsForClientInput items{
         {"document", buffer.str(), "2MB_data", "application/octet-stream"},
         {"hello", "world", "", ""},
     };
@@ -7873,7 +7875,7 @@ TEST(MultipartFormDataTest, PostInvalidBoundaryChars) {
 
   Client cli("https://localhost:8080");
 
-  MultipartFormDataItems items{
+  MultipartFormDataItemsForClientInput items{
       {"document", buffer.str(), "2MB_data", "application/octet-stream"},
       {"hello", "world", "", ""},
   };
@@ -7938,7 +7940,7 @@ TEST(MultipartFormDataTest, PutFormData) {
     Client cli("https://localhost:8080");
     cli.enable_server_certificate_verification(false);
 
-    MultipartFormDataItems items{
+    MultipartFormDataItemsForClientInput items{
         {"document", buffer.str(), "2MB_data", "application/octet-stream"},
         {"hello", "world", "", ""},
     };
@@ -8002,7 +8004,7 @@ TEST(MultipartFormDataTest, PutFormDataCustomBoundary) {
     Client cli("https://localhost:8080");
     cli.enable_server_certificate_verification(false);
 
-    MultipartFormDataItems items{
+    MultipartFormDataItemsForClientInput items{
         {"document", buffer.str(), "2MB_data", "application/octet-stream"},
         {"hello", "world", "", ""},
     };
@@ -8021,7 +8023,7 @@ TEST(MultipartFormDataTest, PutInvalidBoundaryChars) {
   Client cli("https://localhost:8080");
   cli.enable_server_certificate_verification(false);
 
-  MultipartFormDataItems items{
+  MultipartFormDataItemsForClientInput items{
       {"document", buffer.str(), "2MB_data", "application/octet-stream"},
       {"hello", "world", "", ""},
   };