diff --git a/android/src/main/java/com/getcapacitor/plugin/http/CapacitorHttpUrlConnection.java b/android/src/main/java/com/getcapacitor/plugin/http/CapacitorHttpUrlConnection.java
index f4170856..3dfb0c70 100644
--- a/android/src/main/java/com/getcapacitor/plugin/http/CapacitorHttpUrlConnection.java
+++ b/android/src/main/java/com/getcapacitor/plugin/http/CapacitorHttpUrlConnection.java
@@ -16,6 +16,7 @@
 import java.net.URLEncoder;
 import java.net.UnknownServiceException;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
@@ -215,7 +216,20 @@ public void setRequestBody(PluginCall call, JSValue body) throws JSONException,
             }
             uploader.finish();
         } else {
-            this.writeRequestBody(body.toString());
+            JSObject obj = new JSObject(body.toString());
+            Iterator<String> keys = obj.keys();
+
+            List<Byte> data = new ArrayList<>();
+            while (keys.hasNext()) {
+                data.add((byte)obj.getInt(keys.next()));
+            }
+
+            byte[] bytes = new byte[data.size()];
+            for (int i = 0; i < bytes.length; i++) {
+                bytes[i] = data.get(i);
+            }
+
+            this.writeRequestBody(bytes);
         }
     }
 
@@ -231,6 +245,18 @@ private void writeRequestBody(String body) throws IOException {
         }
     }
 
+    /**
+     * Writes the provided bytes to the HTTP connection managed by this instance.
+     *
+     * @param body The bytes to write to the connection stream.
+     */
+    private void writeRequestBody(byte[] body) throws IOException {
+        try (DataOutputStream os = new DataOutputStream(connection.getOutputStream())) {
+            os.write(body);
+            os.flush();
+        }
+    }
+
     /**
      * Opens a communications link to the resource referenced by this
      * URL, if such a connection has not already been established.
diff --git a/android/src/main/java/com/getcapacitor/plugin/http/HttpRequestHandler.java b/android/src/main/java/com/getcapacitor/plugin/http/HttpRequestHandler.java
index 215beb51..fce4e880 100644
--- a/android/src/main/java/com/getcapacitor/plugin/http/HttpRequestHandler.java
+++ b/android/src/main/java/com/getcapacitor/plugin/http/HttpRequestHandler.java
@@ -393,6 +393,12 @@ public static JSObject request(PluginCall call, String httpMethod) throws IOExce
             if (data.getValue() != null) {
                 connection.setDoOutput(true);
                 connection.setRequestBody(call, data);
+            } else {
+                JSValue webFetchExtraData = new JSValue(call, "webFetchExtra", "body");
+                if (webFetchExtraData.getValue() != null) {
+                    connection.setDoOutput(true);
+                    connection.setRequestBody(call, webFetchExtraData);
+                }
             }
         }
 
diff --git a/android/src/main/java/com/getcapacitor/plugin/http/JSValue.java b/android/src/main/java/com/getcapacitor/plugin/http/JSValue.java
index dd27cfb9..28a0882e 100644
--- a/android/src/main/java/com/getcapacitor/plugin/http/JSValue.java
+++ b/android/src/main/java/com/getcapacitor/plugin/http/JSValue.java
@@ -14,10 +14,10 @@ public class JSValue {
 
     /**
      * @param call The capacitor plugin call, used for accessing the value safely.
-     * @param name The name of the property to access.
+     * @param names The names of the property to access.
      */
-    public JSValue(PluginCall call, String name) {
-        this.value = this.toValue(call, name);
+    public JSValue(PluginCall call, String... names) {
+        this.value = this.toValue(call, names);
     }
 
     /**
@@ -55,14 +55,19 @@ public JSArray toJSArray() throws JSONException {
     /**
      * Returns the underlying value this object represents, coercing it into a capacitor-friendly object if supported.
      */
-    private Object toValue(PluginCall call, String name) {
-        Object value = null;
-        value = call.getArray(name, null);
-        if (value != null) return value;
-        value = call.getObject(name, null);
-        if (value != null) return value;
-        value = call.getString(name, null);
-        if (value != null) return value;
-        return call.getData().opt(name);
+    private Object toValue(PluginCall call, String... names) {
+        Object retValue = null;
+        for (String name : names) {
+            Object value;
+            value = call.getArray(name, null);
+            if (value != null) return value;
+            retValue = retValue == null ? call.getObject(name, null) : ((JSObject)retValue).opt(name);
+            if (retValue != null) continue;
+            value = call.getString(name, null);
+            if (value != null) return value;
+            value = call.getData().opt(name);
+            if (value != null) return value;
+        }
+        return retValue;
     }
 }
diff --git a/ios/Plugin/CapacitorUrlRequest.swift b/ios/Plugin/CapacitorUrlRequest.swift
index ac846d1a..3a64dfee 100644
--- a/ios/Plugin/CapacitorUrlRequest.swift
+++ b/ios/Plugin/CapacitorUrlRequest.swift
@@ -85,6 +85,22 @@ public class CapacitorUrlRequest: NSObject, URLSessionTaskDelegate {
         }
         return Data(stringData.utf8)
     }
+    
+    private func getRequestDataAsRaw(_ data: JSValue) throws -> Data? {
+        guard let obj = data as? JSObject else {
+            throw CapacitorUrlRequestError.serializationError("[ data ] argument could not be parsed as raw data")
+        }
+        let strings: [String: Int] = obj.compactMapValues { any in
+            any as? Int
+        }
+        
+        var raw = [UInt8](repeating: 0, count: strings.keys.count)
+        strings.forEach { key, value in
+            raw[Int(key) ?? 0] = UInt8(value)
+        }
+        
+        return Data(raw)
+    }
 
     func getRequestHeader(_ index: String) -> Any? {
         var normalized = [:] as [String:Any]
@@ -105,9 +121,8 @@ public class CapacitorUrlRequest: NSObject, URLSessionTaskDelegate {
             return try getRequestDataAsFormUrlEncoded(body)
         } else if contentType.contains("multipart/form-data") {
             return try getRequestDataAsMultipartFormData(body)
-        } else {
-            throw CapacitorUrlRequestError.serializationError("[ data ] argument could not be parsed for content type [ \(contentType) ]")
         }
+        return try getRequestDataAsRaw(body);
     }
 
     public func setRequestHeaders(_ headers: [String: String]) {
diff --git a/ios/Plugin/HttpRequestHandler.swift b/ios/Plugin/HttpRequestHandler.swift
index d3d5f26d..8a67fe6f 100644
--- a/ios/Plugin/HttpRequestHandler.swift
+++ b/ios/Plugin/HttpRequestHandler.swift
@@ -159,6 +159,7 @@ class HttpRequestHandler {
         let responseType = call.getString("responseType") ?? "text";
         let connectTimeout = call.getDouble("connectTimeout");
         let readTimeout = call.getDouble("readTimeout");
+        let extra = (call.getObject("webFetchExtra") ?? [:]) as! [String: Any]
 
         let request = try! CapacitorHttpRequestBuilder()
             .setUrl(urlString)
@@ -173,7 +174,7 @@ class HttpRequestHandler {
         let timeout = (connectTimeout ?? readTimeout ?? 600000.0) / 1000.0;
         request.setTimeout(timeout)
 
-        if let data = call.options["data"] as? JSValue {
+        if let data = (call.options["data"] ?? extra["body"]) as? JSValue {
             do {
                 try request.setRequestBody(data)
             } catch {