diff --git a/package.json b/package.json
index dcb82e4..0ddebec 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "pilou": "^0.1.4",
     "style-loader": "^0.13.1",
     "tether": "^1.3.7",
+    "tldjs": "^1.7.0",
     "url-loader": "^0.5.7",
     "vue": "^2.0.1",
     "vue-loader": "^9.5.1",
diff --git a/src/domain/url-parser.js b/src/domain/url-parser.js
new file mode 100644
index 0000000..150dcc5
--- /dev/null
+++ b/src/domain/url-parser.js
@@ -0,0 +1,45 @@
+'use strict';
+import tld from 'tldjs';
+
+function _ipIsValid(ipAddress) {
+    return Boolean(/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ipAddress));
+}
+
+function getDomainName(urlStr) {
+    const domain = tld.getDomain(urlStr);
+    const subDomain = tld.getSubdomain(urlStr);
+    const ip = `${subDomain}.${domain}`;
+    if (_ipIsValid(ip)) {
+        return ip;
+    }
+    return domain;
+}
+
+function isWebExtension() {
+    if (typeof chrome !== 'undefined' && typeof chrome.tabs !== 'undefined') {
+        return typeof chrome.tabs.query === 'function';
+    }
+    return false;
+}
+
+function getCurrentUrl() {
+    return new Promise(function (resolve) {
+        chrome.tabs.query({active: true, currentWindow: true}, function (tabs) {
+            resolve(tabs[0].url);
+        });
+    });
+}
+
+
+function getSite() {
+    if (isWebExtension()) {
+        return getCurrentUrl().then(currentUrl => {
+            return getDomainName(currentUrl)
+        });
+    }
+    return new Promise(function (resolve) {
+        resolve('')
+    });
+}
+
+export {getDomainName, _ipIsValid, isWebExtension, getCurrentUrl, getSite};
diff --git a/test/url-parser.js b/test/url-parser.js
new file mode 100644
index 0000000..4390f15
--- /dev/null
+++ b/test/url-parser.js
@@ -0,0 +1,71 @@
+import test from 'ava';
+import {getDomainName, _ipIsValid, isWebExtension, getCurrentUrl, getSite} from '../src/domain/url-parser';
+
+test(t => {
+    t.is('lesspass.com', getDomainName('https://lesspass.com/#!/'));
+    t.is('lesspass.com', getDomainName('https://lesspass.com/api/'));
+    t.is('lesspass.com', getDomainName('https://api.lesspass.com/'));
+    t.is('192.168.1.1', getDomainName('https://192.168.1.1:10443/webapp/'));
+});
+
+test('ip validator', t => {
+    t.true(_ipIsValid('192.168.23.215'));
+    t.true(_ipIsValid('127.0.0.1'));
+    t.false(_ipIsValid('210.110'), 'must have 4 octets');
+    t.false(_ipIsValid('255'), 'must have 4 octets');
+    t.false(_ipIsValid('y.y.y.y'), 'only digits are allowed');
+    t.false(_ipIsValid('255.0.0.y'), 'only digits are allowed');
+    t.false(_ipIsValid('666.10.10.20'), 'octet number must be between [0-255]');
+    t.false(_ipIsValid('4444.11.11.11'), 'octet number must be between [0-255]');
+    t.false(_ipIsValid('33.3333.33.3'), 'octet number must be between [0-255]');
+});
+
+test('get web extension context', t => {
+    global.chrome = undefined;
+    t.false(isWebExtension())
+});
+
+test('get web extension context', t => {
+    global.chrome = {
+        tabs: {
+            query(a, b){
+                console.log(a, b)
+            }
+        }
+    };
+    t.true(isWebExtension())
+});
+
+test('get current tab', t => {
+    const url = 'example.org';
+    global.chrome = {
+        tabs: {
+            query(a, callback){
+                callback([{url}])
+            }
+        }
+    };
+    return getCurrentUrl().then(currentUrl => {
+        t.is(currentUrl, url)
+    });
+});
+
+test('get default site', t => {
+    global.chrome = {
+        tabs: {
+            query(a, callback){
+                callback([{url: 'https://example.org'}])
+            }
+        }
+    };
+    return getSite().then(site => {
+        t.is(site, 'example.org')
+    });
+});
+
+test('get default site if not in web extension', t => {
+    global.chrome = undefined;
+    return getSite().then(site => {
+        t.is(site, '')
+    });
+});
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