diff --git a/packages/icon/index.js b/packages/icon/index.js
index e21022df..257222f4 100755
--- a/packages/icon/index.js
+++ b/packages/icon/index.js
@@ -1,9 +1,7 @@
 const { existsSync } = require('fs-extra')
 const path = require('path')
 const Jimp = require('jimp')
-
-const fixUrl = url => url.replace(/\/\//g, '/').replace(':/', '://')
-const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
+const { joinUrl, getRouteParams } = require('@nuxtjs/pwa-utils')
 
 module.exports = function nuxtIcon (options) {
   const hook = () => {
@@ -28,15 +26,7 @@ function generateIcons (moduleOptions) {
   const options = Object.assign({}, defaults, this.options.icon, moduleOptions)
   const iconSrc = options.iconSrc || path.resolve(this.options.srcDir, this.options.dir.static, options.iconFileName)
 
-  // routerBase and publicPath
-  const routerBase = this.options.router.base
-  let publicPath = fixUrl(`${routerBase}/${this.options.build.publicPath}`)
-  if (isUrl(this.options.build.publicPath)) { // CDN
-    publicPath = this.options.build.publicPath
-    if (publicPath.indexOf('//') === 0) {
-      publicPath = `/${publicPath}` // escape fixUrl
-    }
-  }
+  const { publicPath } = getRouteParams(this.options)
 
   // Ensure icon file exists
   if (!existsSync(iconSrc)) {
@@ -66,7 +56,7 @@ function generateIcons (moduleOptions) {
       const assetIcons = []
       const exportIcons = {}
       icons.forEach(icon => {
-        const src = fixUrl(`${publicPath}/${icon.fileName}`)
+        const src = joinUrl(publicPath, icon.fileName)
         assetIcons.push({
           src,
           sizes: `${icon.size}x${icon.size}`,
diff --git a/packages/icon/package.json b/packages/icon/package.json
index 634b263c..2fe3f03c 100644
--- a/packages/icon/package.json
+++ b/packages/icon/package.json
@@ -8,6 +8,7 @@
     "access": "public"
   },
   "dependencies": {
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0",
     "fs-extra": "^7.0.1",
     "hash-sum": "^1.0.2",
     "jimp": "^0.6.0"
diff --git a/packages/manifest/index.js b/packages/manifest/index.js
index efccecee..5821d8a6 100755
--- a/packages/manifest/index.js
+++ b/packages/manifest/index.js
@@ -1,8 +1,6 @@
 const hash = require('hash-sum')
 
-const fixUrl = url => url.replace(/\/\//g, '/').replace(':/', '://')
-const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
-const find = (arr, key, val) => arr.find(obj => val ? obj[key] === val : obj[key])
+const { joinUrl, getRouteParams, find } = require('@nuxtjs/pwa-utils')
 
 module.exports = function nuxtManifest (options) {
   const hook = () => {
@@ -17,15 +15,7 @@ module.exports = function nuxtManifest (options) {
 }
 
 function addManifest (options) {
-  // routerBase and publicPath
-  const routerBase = this.options.router.base
-  let publicPath = fixUrl(`${routerBase}/${this.options.build.publicPath}`)
-  if (isUrl(this.options.build.publicPath)) { // CDN
-    publicPath = this.options.build.publicPath
-    if (publicPath.indexOf('//') === 0) {
-      publicPath = '/' + publicPath // escape fixUrl
-    }
-  }
+  const { routerBase, publicPath } = getRouteParams(this.options)
 
   // Defaults
   const defaults = {
@@ -69,7 +59,7 @@ function addManifest (options) {
 
   // Add manifest meta
   if (!find(this.options.head.link, 'rel', 'manifest')) {
-    const baseAttribute = { rel: 'manifest', href: fixUrl(`${manifest.publicPath}/${manifestFileName}`) }
+    const baseAttribute = { rel: 'manifest', href: joinUrl(manifest.publicPath, manifestFileName) }
     const attribute = manifest.crossorigin ? Object.assign({}, baseAttribute, { crossorigin: manifest.crossorigin }) : baseAttribute
     this.options.head.link.push(attribute)
   } else {
diff --git a/packages/manifest/package.json b/packages/manifest/package.json
index 425c84e2..84b8e54a 100755
--- a/packages/manifest/package.json
+++ b/packages/manifest/package.json
@@ -8,6 +8,7 @@
     "access": "public"
   },
   "dependencies": {
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0",
     "hash-sum": "^1.0.2"
   }
 }
diff --git a/packages/meta/index.js b/packages/meta/index.js
index b2430062..b6940d7d 100755
--- a/packages/meta/index.js
+++ b/packages/meta/index.js
@@ -1,5 +1,4 @@
-const find = (arr, key, val) => arr.find(obj => val ? obj[key] === val : obj[key])
-const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
+const { find, isUrl } = require('@nuxtjs/pwa-utils')
 
 module.exports = function nuxtMeta (_options) {
   const hook = () => {
diff --git a/packages/meta/package.json b/packages/meta/package.json
index e8b3420b..f19a7056 100755
--- a/packages/meta/package.json
+++ b/packages/meta/package.json
@@ -6,5 +6,8 @@
   "repository": "https://github.com/nuxt-community/pwa-module",
   "publishConfig": {
     "access": "public"
+  },
+  "dependencies": {
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0"
   }
 }
diff --git a/packages/onesignal/index.js b/packages/onesignal/index.js
index 37b1f3cc..0d373e3d 100755
--- a/packages/onesignal/index.js
+++ b/packages/onesignal/index.js
@@ -2,9 +2,7 @@ const path = require('path')
 const { writeFileSync, readFileSync } = require('fs')
 const hashSum = require('hash-sum')
 const { defaultsDeep } = require('lodash')
-
-const fixUrl = url => url.replace(/\/\//g, '/').replace(':/', '://')
-const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
+const { getRouteParams, joinUrl } = require('@nuxtjs/pwa-utils')
 
 // =============================================
 // oneSignal Module
@@ -27,15 +25,7 @@ module.exports = function nuxtOneSignal (moduleOptions) {
 // =============================================
 
 function addOneSignal (moduleOptions) {
-  // Router Base
-  const routerBase = this.options.router.base
-  let publicPath = fixUrl(`${routerBase}/${this.options.build.publicPath}`)
-  if (isUrl(this.options.build.publicPath)) { // CDN
-    publicPath = this.options.build.publicPath
-    if (publicPath.indexOf('//') === 0) {
-      publicPath = '/' + publicPath // Escape fixUrl
-    }
-  }
+  const { publicPath } = getRouteParams(this.options)
 
   // Merge options
   const defaults = {
@@ -65,7 +55,7 @@ function addOneSignal (moduleOptions) {
       const OneSignalSDKHash = hashSum(OneSignalSDKJS)
       const OneSignalSDKFile = `ons.${OneSignalSDKHash}.js`
 
-      options.OneSignalSDK = fixUrl(publicPath + '/' + OneSignalSDKFile)
+      options.OneSignalSDK = joinUrl(publicPath, OneSignalSDKFile)
 
       this.options.build.plugins.push({
         apply (compiler) {
diff --git a/packages/onesignal/package.json b/packages/onesignal/package.json
index a2d54f25..805cd19b 100755
--- a/packages/onesignal/package.json
+++ b/packages/onesignal/package.json
@@ -6,5 +6,8 @@
   "repository": "https://github.com/nuxt-community/pwa-module",
   "publishConfig": {
     "access": "public"
+  },
+  "dependencies": {
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0"
   }
 }
diff --git a/packages/pwa-utils/README.md b/packages/pwa-utils/README.md
new file mode 100644
index 00000000..212ee9b8
--- /dev/null
+++ b/packages/pwa-utils/README.md
@@ -0,0 +1 @@
+👉 Please refer to [nuxt-community/pwa-module](https://github.com/nuxt-community/pwa-module) for documentation.
diff --git a/packages/pwa-utils/index.js b/packages/pwa-utils/index.js
new file mode 100755
index 00000000..57cb3162
--- /dev/null
+++ b/packages/pwa-utils/index.js
@@ -0,0 +1,38 @@
+import { posix as path } from 'path'
+
+function find (arr, key, val) {
+  return arr.find(obj => val ? obj[key] === val : obj[key])
+}
+
+function isUrl (url) {
+  return url.indexOf('http') === 0 || url.indexOf('//') === 0
+}
+
+function joinUrl (...args) {
+  return path.join(...args)
+}
+
+function getRouteParams (options) {
+  // routerBase
+  const routerBase = options.router.base
+
+  // publicPath
+  let publicPath
+  if (isUrl(options.build.publicPath)) {
+    publicPath = options.build.publicPath
+  } else {
+    publicPath = joinUrl(routerBase, options.build.publicPath)
+  }
+
+  return {
+    routerBase,
+    publicPath
+  }
+}
+
+module.exports = {
+  find,
+  isUrl,
+  joinUrl,
+  getRouteParams
+}
diff --git a/packages/pwa-utils/package.json b/packages/pwa-utils/package.json
new file mode 100755
index 00000000..e641fa43
--- /dev/null
+++ b/packages/pwa-utils/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "@nuxtjs/pwa-utils",
+  "version": "3.0.0-beta.0",
+  "license": "MIT",
+  "main": "index.js",
+  "repository": "https://github.com/nuxt-community/pwa-module",
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/packages/pwa/package.json b/packages/pwa/package.json
index 3f3c6a92..067596c9 100755
--- a/packages/pwa/package.json
+++ b/packages/pwa/package.json
@@ -11,6 +11,7 @@
     "@nuxtjs/icon": "3.0.0-beta.0",
     "@nuxtjs/manifest": "3.0.0-beta.0",
     "@nuxtjs/meta": "3.0.0-beta.0",
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0",
     "@nuxtjs/workbox": "3.0.0-beta.0"
   }
 }
diff --git a/packages/workbox/lib/options.js b/packages/workbox/lib/options.js
index 3893679a..028ae227 100644
--- a/packages/workbox/lib/options.js
+++ b/packages/workbox/lib/options.js
@@ -1,7 +1,7 @@
 const path = require('path')
 
 const defaults = require('./defaults')
-const { fixUrl, isUrl } = require('./utils')
+const { joinUrl, getRouteParams } = require('@nuxtjs/pwa-utils')
 
 const HMRRegex = '(?!.*(__webpack_hmr|hot-update))'
 
@@ -15,15 +15,8 @@ function getOptions (moduleOptions) {
 
   // publicPath
   if (!options.publicPath) {
-    if (isUrl(this.options.build.publicPath)) {
-      // CDN
-      options.publicPath = this.options.build.publicPath
-      if (options.publicPath.indexOf('//') === 0) {
-        options.publicPath = '/' + options.publicPath
-      }
-    } else {
-      options.publicPath = fixUrl(`${options.routerBase}/${this.options.build.publicPath}`)
-    }
+    const { publicPath } = getRouteParams(this.options)
+    options.publicPath = publicPath
   }
 
   // swTemplate
@@ -38,18 +31,18 @@ function getOptions (moduleOptions) {
 
   // swURL
   if (!options.swURL) {
-    options.swURL = fixUrl(`${options.routerBase}/sw.js`)
+    options.swURL = joinUrl(options.routerBase, 'sw.js')
   }
 
   // swScope
   if (!options.swScope) {
-    options.swScope = fixUrl(`${options.routerBase}/`)
+    options.swScope = options.routerBase
   }
 
   // Cache all _nuxt resources at runtime
   if (options.cacheAssets) {
     options.runtimeCaching.push({
-      urlPattern: fixUrl(`${options.publicPath}/${HMRRegex}`),
+      urlPattern: joinUrl(options.publicPath, HMRRegex),
       handler: 'cacheFirst'
     })
   }
@@ -57,7 +50,7 @@ function getOptions (moduleOptions) {
   // Optionally cache other routes for offline
   if (options.offline && !options.offlinePage) {
     options.runtimeCaching.push({
-      urlPattern: fixUrl(`^${options.routerBase}/${HMRRegex}`),
+      urlPattern: joinUrl(`^${options.routerBase}`, HMRRegex),
       handler: 'networkFirst'
     })
   }
diff --git a/packages/workbox/lib/utils.js b/packages/workbox/lib/utils.js
index b4c94f81..5e8c0786 100644
--- a/packages/workbox/lib/utils.js
+++ b/packages/workbox/lib/utils.js
@@ -1,12 +1,5 @@
 const { readFileSync, existsSync } = require('fs')
 
-function fixUrl (url) {
-  return url.replace(/\/\//g, '/').replace(':/', '://')
-}
-function isUrl (url) {
-  return url.indexOf('http') === 0 || url.indexOf('//') === 0
-}
-
 function readJSFiles (files) {
   return Array.from(files)
     .map(Boolean)
@@ -22,7 +15,5 @@ function readJSFiles (files) {
 }
 
 module.exports = {
-  fixUrl,
-  isUrl,
   readJSFiles
 }
diff --git a/packages/workbox/package.json b/packages/workbox/package.json
index 4dc20b19..19901a70 100644
--- a/packages/workbox/package.json
+++ b/packages/workbox/package.json
@@ -6,5 +6,8 @@
   "repository": "https://github.com/nuxt-community/pwa-module",
   "publishConfig": {
     "access": "public"
+  },
+  "dependencies": {
+    "@nuxtjs/pwa-utils": "3.0.0-beta.0"
   }
 }