diff --git a/package.json b/package.json
index 440d86e..ddc4c74 100755
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
 	"private": true,
 	"scripts": {
 		"build": "NODE_ENV=production webpack --progress --config webpack.app.js",
-		"app": "NODE_ENV=development webpack --progress --config webpack.app.js",
+		"test": "NODE_ENV=development webpack --progress --config webpack.app.js",
 		"watch": "NODE_ENV=development webpack --progress --watch --config webpack.app.js",
 		"lint": "eslint --ext .js,.vue src",
 		"lint:fix": "eslint --ext .js,.vue src --fix",
diff --git a/src/App.vue b/src/App.vue
index 3b202c4..aa142d4 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -79,7 +79,7 @@ export default {
         helper.info(message);
       }
       let url = formWrapper.getAttribute("action");
-      Http.getInstance(url)
+      helper.httpClient(url)
         .setData(formData)
         .setHandler(function (data) {
           successCallback(data, element);
@@ -100,7 +100,7 @@ export default {
       contentTable.getInstance().loading();
 
       let url = formWrapper.getAttribute("action");
-      Http.getInstance(url)
+      helper.httpClient(url)
         .setData(formData)
         .setHandler(function (data) {
           if (data && data.title) {
@@ -123,7 +123,7 @@ export default {
       if (files) {
         let formWrapper = element.closest("form");
         let url = formWrapper.getAttribute("action");
-        return Http.getInstance(url)
+        return helper.httpClient(url)
           .setHandler(function (data) {
             successCallback(data, element);
           })
diff --git a/src/actions/buttonActions.js b/src/actions/buttonActions.js
index 3b521b2..7d588cd 100644
--- a/src/actions/buttonActions.js
+++ b/src/actions/buttonActions.js
@@ -29,7 +29,7 @@ const buttonHandler = (event, type) => {
             console.log("gid is not set!");
         }
     }
-    Http.getInstance(url).setErrorHandler(function (xhr, textStatus, error) {
+    helper.httpClient(url).setErrorHandler(function (xhr, textStatus, error) {
         console.log(error);
     }).setHandler(function (data) {
         if (data.hasOwnProperty('error')) {
diff --git a/src/components/folderSettings.vue b/src/components/folderSettings.vue
index 770ce14..c8ab43d 100644
--- a/src/components/folderSettings.vue
+++ b/src/components/folderSettings.vue
@@ -23,7 +23,7 @@ export default {
         }
         let data = { ncd_downloader_dir: path };
         let url = helper.generateUrl("/apps/ncdownloader/personal/save");
-        Http.getInstance(url)
+        helper.httpClient(url)
           .setData(data)
           .setHandler((data) => {
             if (data.status) {
diff --git a/src/index.js b/src/index.js
index 94bf2bd..5931d97 100644
--- a/src/index.js
+++ b/src/index.js
@@ -73,7 +73,7 @@ window.addEventListener('DOMContentLoaded', function () {
                 element.textContent = t("ncdownloader", "Stop Aria2");
             }
         }
-        Http.getInstance(url).setHandler(function (data) {
+        helper.httpClient(url).setHandler(function (data) {
             callback(parent, oldHtml, data);
         }).send();
     })
diff --git a/src/lib/http.ts b/src/lib/http.ts
index c1e2e7a..71d688e 100644
--- a/src/lib/http.ts
+++ b/src/lib/http.ts
@@ -3,49 +3,131 @@ type httpData = {
 }
 type httpMethod = "POST" | "HEAD" | "GET";
 type handler = (data: any) => void;
-const Http = class {
+type httpClient = XMLHttpRequest;
+type requestOptions = {
+    [key: string]: any;
+    headers: Headers;
+}
+export const Http = class {
     data: httpData;
     url: string;
     method: httpMethod;
-    dataType: string;
-    xhr: XMLHttpRequest;
+    contentType: string;
+    client: httpClient;
     handler: handler;
     errorHandler: handler;
+    legacyHttp: boolean;
+    headers: Headers
 
-    constructor(url: string) {
+    constructor(url: string, legacyHttp: boolean = false) {
         this.url = url;
         this.method = 'POST';
         this.data = null;
-        this.dataType = 'application/json';
-        this.xhr = new XMLHttpRequest();
+        this.contentType = 'application/json';
+        this.legacyHttp = legacyHttp
+        if (!legacyHttp) {
+            this.headers = new Headers();
+        }
     }
-    static getInstance(url: string) {
-        return new Http(url);
+    isFetchAPISupported() {
+        return (typeof fetch == 'function')
+    }
+    static create(url: string, legacyHttp: boolean = false) {
+        return new Http(url, legacyHttp);
     }
     setData(data: httpData) {
         this.data = data
         return this
     }
-    setDataType(value: string) {
-        this.dataType = value;
+    setContentType(value: string) {
+        this.contentType = value;
+        return this;
     }
     send() {
         let token = this.getToken();
-        this.xhr.open(this.method, this.url);
-        this.xhr.setRequestHeader('requesttoken', token)
-        this.xhr.setRequestHeader('OCS-APIREQUEST', 'true')
-        if (this.dataType)
-            this.xhr.setRequestHeader('Content-Type', this.dataType);
-        let callback = this.handler;
-        this.xhr.onload = () => {
-            if (typeof callback === 'function')
-                callback(JSON.parse(this.xhr.response));
+        if (!this.isFetchAPISupported() || this.legacyHttp) {
+            this.client = new XMLHttpRequest();
+            this.client.open(this.method, this.url);
+            if (this.contentType)
+                this.setHeader('Content-Type', this.contentType);
+            if (token) {
+                this.setHeader('requesttoken', token)
+                this.setHeader('OCS-APIREQUEST', 'true')
+            }
+            let callback = this.handler;
+            this.client.onreadystatechange = () => {
+                if (this.client.readyState === XMLHttpRequest.DONE) {
+                    let status = this.client.status;
+                    const contentType = this.client.getResponseHeader("Content-Type")
+                    if (status === 0 || (status >= 200 && status < 400)) {
+                        if (typeof callback === 'function' && contentType.indexOf("application/json") !== -1) {
+                            callback(JSON.parse(this.client.response));
+                        }
+                        else {
+                            callback(this.client.response);
+                        }
+                    }
+                }
+            }
+            this.client.onerror = this.errorHandler;
+            let params = this.data ? JSON.stringify(this.data) : null
+            this.client.send(params);
+        } else {
+            let options = this.getRequestOpts();
+            fetch(options).then(response => {
+                if (response.status !== 200) {
+                    console.log('Network failures. Status Code: ' + response.status);
+                    return;
+                }
+                const contentType = response.headers.get('content-type');
+                if (contentType && contentType.indexOf("application/json") !== -1) {
+                    response.json().then(data => {
+                        this.handler(data)
+                    })
+                } else {
+                    response.text().then(data => {
+                        this.handler(data)
+                    })
+                }
+
+            }).catch(this.errorHandler)
         }
-        this.xhr.onerror = this.errorHandler;
-        this.xhr.send(JSON.stringify(this.data));
+
+    }
+    setHeader(key: string, val: string) {
+        if (this.legacyHttp) {
+            this.client.setRequestHeader(key, val)
+        } else {
+            this.headers.set(key, val);
+        }
+    }
+    appendHeader(key: string, val: string) {
+        this.headers.append(key, val);
+    }
+    getRequestOpts() {
+        this.setHeader('content-type', this.contentType);
+        let token;
+        if (token = this.getToken()) {
+            this.setHeader('requesttoken', token)
+            this.setHeader('OCS-APIREQUEST', 'true')
+        }
+        if (this.method == 'POST' && this.data) {
+            var body = JSON.stringify(this.data);
+        }
+        let options: requestOptions = {
+            headers: this.headers,
+            method: this.method,
+            body: body,
+            mode: 'cors',
+            cache: 'default'
+        }
+        return new Request(this.url, options);
     }
     getToken() {
-        return document.getElementsByTagName('head')[0].getAttribute('data-requesttoken')
+        if (typeof document == "undefined") {
+            return null
+        }
+        return window.document.getElementsByTagName('head')[0].getAttribute('data-requesttoken')
     }
     setUrl(url: string) {
         this.url = url
@@ -60,19 +142,19 @@ const Http = class {
         return this;
     }
     setErrorHandler(handler: handler) {
-        this.errorHandler = handler
+        this.errorHandler = handler || function (error) { console.log(error) };
         return this;
     }
     upload(file: File) {
         const fd = new FormData();
-        this.xhr.open(this.method, this.url, true);
+        this.client.open(this.method, this.url, true);
         let callback = this.handler;
-        this.xhr.onload = () => {
+        this.client.onload = () => {
             if (typeof callback === 'function')
-                callback(JSON.parse(this.xhr.response));
+                callback(JSON.parse(this.client.response));
         }
         fd.append('torrentfile', file);
-        return this.xhr.send(fd);
+        return this.client.send(fd);
     }
 }
 
diff --git a/src/settings.js b/src/settings.js
index 71e00dd..f980174 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -44,7 +44,7 @@ window.addEventListener('DOMContentLoaded', function () {
             OC_msg.finishedError('#ncdownloader-message-banner', 'invalid options: ' + badOptions.join(','));
             return;
         }
-        Http.getInstance(url).setData(data).setHandler(function (data) {
+        helper.httpClient(url).setData(data).setHandler(function (data) {
             if (data.hasOwnProperty("error")) {
                 OC_msg.finishedError('#ncdownloader-message-banner', data.error);
             } else if (data.hasOwnProperty("message")) {
@@ -115,7 +115,7 @@ window.addEventListener('DOMContentLoaded', function () {
         e.preventDefault();
         this.parentNode.remove();
     })
-    Http.getInstance(generateUrl("/apps/ncdownloader/personal/aria2/get")).setHandler(function (data) {
+    helper.httpClient(generateUrl("/apps/ncdownloader/personal/aria2/get")).setHandler(function (data) {
         if (!data) {
             return;
         }
@@ -127,7 +127,7 @@ window.addEventListener('DOMContentLoaded', function () {
         settingsForm.getInstance().render(input);
     }).send();
 
-    Http.getInstance(generateUrl("/apps/ncdownloader/personal/youtube-dl/get")).setHandler(function (data) {
+    helper.httpClient(generateUrl("/apps/ncdownloader/personal/youtube-dl/get")).setHandler(function (data) {
         if (!data) {
             return;
         }
diff --git a/src/settingsBar.vue b/src/settingsBar.vue
index 9dde049..c650ae0 100644
--- a/src/settingsBar.vue
+++ b/src/settingsBar.vue
@@ -70,7 +70,7 @@ export default {
       data[name] = value ? 1 : 0;
       let path = (name == "ncd_disable_bt") ? "/admin/save" : "/personal/save";
       const url = helper.generateUrl(basePath + path);
-      Http.getInstance(url)
+      helper.httpClient(url)
         .setData(data)
         .setHandler((resp) => {
           if (resp["message"]) {
diff --git a/src/utils/helper.js b/src/utils/helper.js
index 178313f..a7b615a 100644
--- a/src/utils/helper.js
+++ b/src/utils/helper.js
@@ -34,7 +34,7 @@ const helper = {
     scanFolder(forceScan = false, path = "/apps/ncdownloader/scanfolder") {
         let url = helper.generateUrl(path);
         return new Promise((resolve) => {
-            Http.getInstance(url).setData({ "force": forceScan }).setHandler(function (data) {
+            helper.httpClient(url).setData({ "force": forceScan }).setHandler(function (data) {
                 resolve(data.status);
             }).send();
         });
@@ -48,7 +48,7 @@ const helper = {
     refresh(path) {
         path = path || "/apps/ncdownloader/status/active";
         let url = helper.generateUrl(path);
-        Http.getInstance(url).setHandler(function (data) {
+        helper.httpClient(url).setHandler(function (data) {
             if (data && data.row) {
                 contentTable.getInstance(data.title, data.row).create();
             } else {
@@ -144,7 +144,7 @@ const helper = {
     },
     getCounters() {
         let url = helper.generateUrl("apps/ncdownloader/counters");
-        Http.getInstance(url).setMethod("GET").setHandler(function (data) {
+        helper.httpClient(url).setMethod("GET").setHandler(function (data) {
             if (data["counter"])
                 helper.updateCounter(data["counter"]);
         }).send();
@@ -299,10 +299,13 @@ const helper = {
     getSettings(key, defaultValue = null, type = 2) {
         let url = helper.generateUrl("/apps/ncdownloader/getsettings");
         return new Promise(resolve => {
-            Http.getInstance(url).setData({ name: key, type: type, default: defaultValue }).setHandler(data => {
+            helper.httpClient(url).setData({ name: key, type: type, default: defaultValue }).setHandler(data => {
                 resolve(data)
             }).send()
         })
+    },
+    httpClient(url) {
+        return new Http.create(url, true)
     }
 }