diff --git a/openvidu-server/src/main/java/io/openvidu/server/config/OpenviduConfig.java b/openvidu-server/src/main/java/io/openvidu/server/config/OpenviduConfig.java
index 00c27ad5..38b100d1 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/config/OpenviduConfig.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/config/OpenviduConfig.java
@@ -753,8 +753,7 @@ public class OpenviduConfig {
 	}
 
 	private List<Header> checkWebhookHeaders(String headers) throws Exception {
-		JsonParser parser = new JsonParser();
-		JsonElement elem = parser.parse(headers);
+		JsonElement elem = JsonParser.parseString(headers);
 		JsonArray headersJsonArray = elem.getAsJsonArray();
 		List<Header> headerList = new ArrayList<>();
 
@@ -781,8 +780,7 @@ public class OpenviduConfig {
 	}
 
 	private List<CDREventName> checkWebhookEvents(String events) throws Exception {
-		JsonParser parser = new JsonParser();
-		JsonElement elem = parser.parse(events);
+		JsonElement elem = JsonParser.parseString(events);
 		JsonArray eventsJsonArray = elem.getAsJsonArray();
 		List<CDREventName> eventList = new ArrayList<>();
 
diff --git a/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java b/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
index d13247f8..d0f06209 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
@@ -106,7 +106,7 @@ public abstract class SessionManager {
 
 	public void sendMessage(String message, String sessionId) {
 		try {
-			JsonObject messageJson = new JsonParser().parse(message).getAsJsonObject();
+			JsonObject messageJson = JsonParser.parseString(message).getAsJsonObject();
 			sessionEventsHandler.onSendMessage(null, messageJson, getParticipants(sessionId), null, null);
 		} catch (JsonSyntaxException | IllegalStateException e) {
 			throw new OpenViduException(Code.SIGNAL_FORMAT_INVALID_ERROR_CODE,
@@ -116,7 +116,7 @@ public abstract class SessionManager {
 
 	public void sendMessage(Participant participant, String message, Integer transactionId) {
 		try {
-			JsonObject messageJson = new JsonParser().parse(message).getAsJsonObject();
+			JsonObject messageJson = JsonParser.parseString(message).getAsJsonObject();
 			sessionEventsHandler.onSendMessage(participant, messageJson, getParticipants(participant.getSessionId()),
 					transactionId, null);
 		} catch (JsonSyntaxException | IllegalStateException e) {
diff --git a/openvidu-server/src/main/java/io/openvidu/server/rest/SessionRestController.java b/openvidu-server/src/main/java/io/openvidu/server/rest/SessionRestController.java
index 48a79e15..30f56d88 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/rest/SessionRestController.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/rest/SessionRestController.java
@@ -338,7 +338,7 @@ public class SessionRestController {
 
 		if (params.get("kurentoOptions") != null) {
 			try {
-				kurentoOptions = new JsonParser().parse(params.get("kurentoOptions").toString()).getAsJsonObject();
+				kurentoOptions = JsonParser.parseString(params.get("kurentoOptions").toString()).getAsJsonObject();
 			} catch (Exception e) {
 				return this.generateErrorResponse("Error in parameter 'kurentoOptions'. It is not a valid JSON object",
 						"/api/tokens", HttpStatus.BAD_REQUEST);
diff --git a/openvidu-server/src/main/java/io/openvidu/server/rpc/RpcHandler.java b/openvidu-server/src/main/java/io/openvidu/server/rpc/RpcHandler.java
index 47358a1f..f02c2edd 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/rpc/RpcHandler.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/rpc/RpcHandler.java
@@ -477,7 +477,7 @@ public class RpcHandler extends DefaultJsonRpcHandler<JsonObject> {
 				&& participant.getToken().getKurentoTokenOptions().isFilterAllowed(filterType))) {
 			JsonObject filterOptions;
 			try {
-				filterOptions = new JsonParser().parse(getStringParam(request, ProtocolElements.FILTER_OPTIONS_PARAM))
+				filterOptions = JsonParser.parseString(getStringParam(request, ProtocolElements.FILTER_OPTIONS_PARAM))
 						.getAsJsonObject();
 			} catch (JsonSyntaxException e) {
 				throw new OpenViduException(Code.FILTER_NOT_APPLIED_ERROR_CODE,
@@ -525,7 +525,7 @@ public class RpcHandler extends DefaultJsonRpcHandler<JsonObject> {
 		}
 		String streamId = getStringParam(request, ProtocolElements.FILTER_STREAMID_PARAM);
 		String filterMethod = getStringParam(request, ProtocolElements.FILTER_METHOD_PARAM);
-		JsonObject filterParams = new JsonParser().parse(getStringParam(request, ProtocolElements.FILTER_PARAMS_PARAM))
+		JsonObject filterParams = JsonParser.parseString(getStringParam(request, ProtocolElements.FILTER_PARAMS_PARAM))
 				.getAsJsonObject();
 		boolean isModerator = this.sessionManager.isModeratorInSession(rpcConnection.getSessionId(), participant);
 
diff --git a/openvidu-server/src/main/java/io/openvidu/server/utils/JsonUtils.java b/openvidu-server/src/main/java/io/openvidu/server/utils/JsonUtils.java
index d51c0160..353a1b1c 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/utils/JsonUtils.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/utils/JsonUtils.java
@@ -57,7 +57,6 @@ public class JsonUtils {
 	public JsonElement fromFileToJsonElement(String filePath)
 			throws IOException, FileNotFoundException, JsonParseException, IllegalStateException {
 		JsonElement json = null;
-		JsonParser parser = new JsonParser();
 		FileReader reader = null;
 		try {
 			reader = new FileReader(filePath);
@@ -65,7 +64,7 @@ public class JsonUtils {
 			throw e;
 		}
 		try {
-			json = parser.parse(reader);
+			json = JsonParser.parseReader(reader);
 		} catch (JsonParseException | IllegalStateException exception) {
 			throw exception;
 		} finally {