diff --git a/src/config.ts b/src/config.ts
new file mode 100644
index 0000000..f2bd803
--- /dev/null
+++ b/src/config.ts
@@ -0,0 +1,149 @@
+import { browser } from 'webextension-polyfill-ts';
+
+/**
+ * Logging
+ */
+type ApiStates = 'allGood' | 'notLogging' | 'notSignedIn' | 'blacklisted' | 'whitelisted';
+/**
+ * Supported logging style
+ */
+type LoggingStyle = 'whitelist' | 'blacklist';
+/**
+ * Logging type
+ */
+type LoggingType = 'domain' | 'url';
+type SuccessOrFailType = 'success' | 'danger';
+/**
+ * Predefined alert type and text for success and failure.
+ */
+interface Alert {
+  failure: SuccessOrFailAlert;
+  success: SuccessOrFailAlert;
+}
+/**
+ * Define what a sucess or failure shape looks like
+ */
+interface SuccessOrFailAlert {
+  text: string;
+  type: SuccessOrFailType;
+}
+/**
+ *  Different colors for different states of the extension
+ */
+interface Colors {
+  allGood: string;
+  lightTheme: string;
+  notLogging: string;
+  notSignedIn: string;
+}
+/**
+ * Tooltip messages
+ */
+interface Tooltips {
+  allGood: string;
+  blacklisted: string;
+  notLogging: string;
+  notSignedIn: string;
+  whitelisted: string;
+}
+
+export interface Config {
+  alert: Alert;
+  colors: Colors;
+  /**
+   * Url from which to detect if the user is logged in
+   */
+  currentUserApiUrl: string;
+  /**
+   * Time for idle state of the browser
+   * The user is considered idle if there was
+   * no activity in the browser for x second
+   */
+  detectionIntervalInSeconds: number;
+  /**
+   * Url to which to send the heartbeat
+   */
+  heartbeatApiUrl: string;
+  /**
+   * Is logging enabled
+   */
+  loggingEnabled: boolean;
+  loggingStyle: LoggingStyle;
+  loggingType: LoggingType;
+  /**
+   * Url to logout out of wakatime
+   */
+  logoutUserUrl: string;
+  /**
+   * Extension name
+   */
+  name: string;
+  states: ApiStates[];
+  /**
+   * Get stats from the wakatime api
+   */
+  summariesApiUrl: string;
+  /**
+   * Options for theme
+   */
+  theme: 'light';
+  tooltips: Tooltips;
+  /**
+   * Version of the extension
+   */
+  version: string;
+}
+
+const config: Config = {
+  alert: {
+    failure: {
+      text: 'There was an error while saving the options!',
+      type: 'danger',
+    },
+    success: {
+      text: 'Options have been saved!',
+      type: 'success',
+    },
+  },
+
+  colors: {
+    allGood: '',
+    lightTheme: 'white',
+    notLogging: 'gray',
+    notSignedIn: 'red',
+  },
+
+  currentUserApiUrl: 'https://wakatime.com/api/v1/users/current',
+
+  detectionIntervalInSeconds: 60,
+
+  heartbeatApiUrl: 'https://wakatime.com/api/v1/users/current/heartbeats',
+
+  loggingEnabled: true,
+
+  loggingStyle: 'blacklist',
+
+  loggingType: 'domain',
+
+  logoutUserUrl: 'https://wakatime.com/logout',
+
+  name: 'WakaTime',
+
+  states: ['allGood', 'notLogging', 'notSignedIn', 'blacklisted', 'whitelisted'],
+
+  summariesApiUrl: 'https://wakatime.com/api/v1/users/current/summaries',
+
+  theme: 'light',
+
+  tooltips: {
+    allGood: '',
+    blacklisted: 'This URL is blacklisted',
+    notLogging: 'Not logging',
+    notSignedIn: 'Not signed In',
+    whitelisted: 'This URL is not on your whitelist',
+  },
+
+  version: browser.runtime.getManifest().version,
+};
+
+export default config;