diff --git a/lib/codegen/java/okhttp.dart b/lib/codegen/java/okhttp.dart
index 12b2f90f..9045aa55 100644
--- a/lib/codegen/java/okhttp.dart
+++ b/lib/codegen/java/okhttp.dart
@@ -140,7 +140,7 @@ import okhttp3.MultipartBody;""";
             var templateBody = jj.Template(kTemplateRequestBody);
             result += templateBody.render({
               "contentType": contentType,
-              "body": kEncoder.convert(requestBody)
+              "body": kJsonEncoder.convert(requestBody)
             });
           }
         }
diff --git a/lib/codegen/js/axios.dart b/lib/codegen/js/axios.dart
index faf97304..6314bdcd 100644
--- a/lib/codegen/js/axios.dart
+++ b/lib/codegen/js/axios.dart
@@ -79,7 +79,7 @@ axios(config)
           m[i["name"]] = i["value"];
         }
         result += templateParams
-            .render({"params": padMultilineString(kEncoder.convert(m), 2)});
+            .render({"params": padMultilineString(kJsonEncoder.convert(m), 2)});
       }
 
       var headers = harJson["headers"];
@@ -92,8 +92,8 @@ axios(config)
         if (requestModel.hasFormData) {
           m[kHeaderContentType] = ContentType.formdata.header;
         }
-        result += templateHeader
-            .render({"headers": padMultilineString(kEncoder.convert(m), 2)});
+        result += templateHeader.render(
+            {"headers": padMultilineString(kJsonEncoder.convert(m), 2)});
       }
       var templateBody = jj.Template(kTemplateBody);
       if (requestModel.hasFormData && requestModel.formDataMapList.isNotEmpty) {
@@ -108,12 +108,13 @@ axios(config)
                   : "fileInput$formFileCounter.files[0]";
           if (element["type"] == "file") formFileCounter++;
         }
-        var sanitizedJSObject = sanitzeJSObject(kEncoder.convert(formParams));
+        var sanitizedJSObject =
+            sanitzeJSObject(kJsonEncoder.convert(formParams));
         result += templateBody
             .render({"body": padMultilineString(sanitizedJSObject, 2)});
       } else if (harJson["postData"]?["text"] != null) {
-        result += templateBody
-            .render({"body": kEncoder.convert(harJson["postData"]["text"])});
+        result += templateBody.render(
+            {"body": kJsonEncoder.convert(harJson["postData"]["text"])});
       }
       result += kStringRequest;
       return result;
diff --git a/lib/codegen/js/fetch.dart b/lib/codegen/js/fetch.dart
index 21c4f238..c4ca14b0 100644
--- a/lib/codegen/js/fetch.dart
+++ b/lib/codegen/js/fetch.dart
@@ -106,7 +106,7 @@ fetch(url, options)
         }
         if (m.isNotEmpty) {
           result += templateHeader.render({
-            "headers": padMultilineString(kEncoder.convert(m), 2),
+            "headers": padMultilineString(kJsonEncoder.convert(m), 2),
           });
         }
       }
@@ -114,7 +114,7 @@ fetch(url, options)
       if (harJson["postData"]?["text"] != null) {
         var templateBody = jj.Template(kTemplateBody);
         result += templateBody.render({
-          "body": kEncoder.convert(harJson["postData"]["text"]),
+          "body": kJsonEncoder.convert(harJson["postData"]["text"]),
         });
       } else if (requestModel.hasFormData) {
         var templateBody = jj.Template(kTemplateBody);
diff --git a/lib/codegen/others/har.dart b/lib/codegen/others/har.dart
index 32a35abe..acef6357 100644
--- a/lib/codegen/others/har.dart
+++ b/lib/codegen/others/har.dart
@@ -9,7 +9,7 @@ class HARCodeGen {
     String? boundary,
   }) {
     try {
-      var harString = kEncoder.convert(requestModelToHARJsonRequest(
+      var harString = kJsonEncoder.convert(requestModelToHARJsonRequest(
         requestModel,
         defaultUriScheme: defaultUriScheme,
         useEnabled: true,
diff --git a/lib/codegen/python/http_client.dart b/lib/codegen/python/http_client.dart
index ea783ebe..f58607c2 100644
--- a/lib/codegen/python/http_client.dart
+++ b/lib/codegen/python/http_client.dart
@@ -111,7 +111,7 @@ body = b'\r\n'.join(dataList)
           if (params.isNotEmpty) {
             hasQuery = true;
             var templateParams = jj.Template(kTemplateParams);
-            var paramsString = kEncoder.convert(params);
+            var paramsString = kJsonEncoder.convert(params);
             result += templateParams.render({"params": paramsString});
           }
         }
@@ -143,7 +143,7 @@ body = b'\r\n'.join(dataList)
                 });
               }
             }
-            var headersString = kEncoder.convert(headers);
+            var headersString = kJsonEncoder.convert(headers);
             var templateHeaders = jj.Template(kTemplateHeaders);
             result += templateHeaders.render({"headers": headersString});
           }
diff --git a/lib/codegen/python/requests.dart b/lib/codegen/python/requests.dart
index bb41ad9d..8ca4c152 100644
--- a/lib/codegen/python/requests.dart
+++ b/lib/codegen/python/requests.dart
@@ -107,7 +107,7 @@ print('Response Body:', response.text)
           if (params.isNotEmpty) {
             hasQuery = true;
             var templateParams = jj.Template(kTemplateParams);
-            var paramsString = kEncoder.convert(params);
+            var paramsString = kJsonEncoder.convert(params);
             result += templateParams.render({"params": paramsString});
           }
         }
@@ -162,7 +162,7 @@ print('Response Body:', response.text)
           }
           if (headers.isNotEmpty) {
             hasHeaders = true;
-            var headersString = kEncoder.convert(headers);
+            var headersString = kJsonEncoder.convert(headers);
             headersString = refactorHeaderString(headersString);
             var templateHeaders = jj.Template(kTemplateHeaders);
             result += templateHeaders.render({"headers": headersString});
diff --git a/lib/consts.dart b/lib/consts.dart
index 9d72e0e3..1681069a 100644
--- a/lib/consts.dart
+++ b/lib/consts.dart
@@ -413,7 +413,8 @@ enum ImportFormat {
   final String label;
 }
 
-const JsonEncoder kEncoder = JsonEncoder.withIndent('  ');
+const JsonEncoder kJsonEncoder = JsonEncoder.withIndent('  ');
+const JsonDecoder kJsonDecoder = JsonDecoder();
 const LineSplitter kSplitter = LineSplitter();
 
 const String kGlobalEnvironmentId = "global";
diff --git a/lib/utils/convert_utils.dart b/lib/utils/convert_utils.dart
index d0b2ac26..b3c3b2bc 100644
--- a/lib/utils/convert_utils.dart
+++ b/lib/utils/convert_utils.dart
@@ -150,7 +150,7 @@ Uint8List jsonMapToBytes(Map<String, dynamic>? map) {
   if (map == null) {
     return Uint8List.fromList([]);
   } else {
-    String text = kEncoder.convert(map);
+    String text = kJsonEncoder.convert(map);
     var l = utf8.encode(text);
     var bytes = Uint8List.fromList(l);
     return bytes;
diff --git a/lib/utils/http_utils.dart b/lib/utils/http_utils.dart
index 4688d2af..e323939a 100644
--- a/lib/utils/http_utils.dart
+++ b/lib/utils/http_utils.dart
@@ -138,7 +138,7 @@ String? formatBody(String? body, MediaType? mediaType) {
     try {
       if (subtype.contains(kSubTypeJson)) {
         final tmp = jsonDecode(body);
-        String result = kEncoder.convert(tmp);
+        String result = kJsonEncoder.convert(tmp);
         return result;
       }
       if (subtype.contains(kSubTypeXml)) {
diff --git a/lib/widgets/json_previewer.dart b/lib/widgets/json_previewer.dart
index 3a4f5648..020015d6 100644
--- a/lib/widgets/json_previewer.dart
+++ b/lib/widgets/json_previewer.dart
@@ -182,7 +182,7 @@ class _JsonPreviewerState extends State<JsonPreviewer> {
                               TextButton(
                                 onPressed: () async {
                                   await _copy(
-                                      kEncoder.convert(widget.code), sm);
+                                      kJsonEncoder.convert(widget.code), sm);
                                 },
                                 child: const Text(
                                   'Copy',
@@ -215,7 +215,7 @@ class _JsonPreviewerState extends State<JsonPreviewer> {
                                 visualDensity: VisualDensity.compact,
                                 onPressed: () async {
                                   await _copy(
-                                      kEncoder.convert(widget.code), sm);
+                                      kJsonEncoder.convert(widget.code), sm);
                                 },
                                 icon: const Icon(
                                   Icons.copy,
@@ -273,7 +273,7 @@ class _JsonPreviewerState extends State<JsonPreviewer> {
                                 ),
                                 onPressed: () async {
                                   await _copy(
-                                      kEncoder.convert(toJson(node)), sm);
+                                      kJsonEncoder.convert(toJson(node)), sm);
                                 },
                               ),
                             )
diff --git a/lib/widgets/response_widgets.dart b/lib/widgets/response_widgets.dart
index 0df9343b..42154478 100644
--- a/lib/widgets/response_widgets.dart
+++ b/lib/widgets/response_widgets.dart
@@ -262,7 +262,7 @@ class ResponseHeadersHeader extends StatelessWidget {
           ),
           if (map.isNotEmpty)
             CopyButton(
-              toCopy: kEncoder.convert(map),
+              toCopy: kJsonEncoder.convert(map),
             ),
         ],
       ),