diff --git a/lib/make/colors.js b/lib/make/colors.js
index 929a992..52d8e22 100644
--- a/lib/make/colors.js
+++ b/lib/make/colors.js
@@ -25,19 +25,19 @@ class colors extends make {
           values = [random.number(255), random.number(255), random.number(255)]
         } else {
           // Percents
-          values = ['%' + random.number(255), '%' + random.number(255), '%' + random.number(255)]
+          values = [`%${random.number(255)}`, `%${random.number(255)}`, `%${random.number(255)}`]
         }
-        return 'rgba(' + values.join(',') + ')'
+        return `rgba(${values.join(',')})`
       case 1:
         // Rgba functional notation
         values = [random.number(255), random.number(255), random.number(255), random.float()]
-        return 'rgba(' + values.join(',') + ')'
+        return `rgba(${values.join(',')})`
       case 2:
         // 4 char hex
-        return '#' + random.hex(4)
+        return `#${random.hex(4)}`
       default:
         // 8 char hex
-        return '#' + random.hex(8)
+        return `#${random.hex(8)}`
     }
   }
 
@@ -46,18 +46,18 @@ class colors extends make {
 
     switch (random.number(4)) {
       case 0:
-        values = [random.number(255), '%' + random.number(255), '%' + random.number(255)]
-        return 'hsl(' + values.join(',') + ')'
+        values = [random.number(255), `%${random.number(255)}`, `%${random.number(255)}`]
+        return `hsl(${values.join(',')})`
       case 1:
-        values = [random.number(255), '%' + random.number(255), '%' + random.number(255), '%' + random.number(255)]
-        return 'hsl(' + values.join(',') + ')'
+        values = [random.number(255), `%${random.number(255)}`, `%${random.number(255)}`, `%${random.number(255)}`]
+        return `hsl(${values.join(',')})`
       case 2:
         opt = random.pick(['deg', 'rad', 'grad', 'turn'])
-        values = [random.number(255) + opt, '%' + random.number(255), '%' + random.number(255), '%' + random.number(255)]
-        return 'hsl(' + values.join(',') + ')'
+        values = [random.number(255) + opt, `%${random.number(255)}`, `%${random.number(255)}`, `%${random.number(255)}`]
+        return `hsl(${values.join(',')})`
       default:
-        values = [random.number(255), '%' + random.number(255), '%' + random.number(255), random.float()]
-        return 'hsl(' + values.join(',') + ')'
+        values = [random.number(255), `%${random.number(255)}`, `%${random.number(255)}`, random.float()]
+        return `hsl(${values.join(',')})`
     }
   }
 
diff --git a/lib/make/fonts.js b/lib/make/fonts.js
index 16ec092..84f8570 100644
--- a/lib/make/fonts.js
+++ b/lib/make/fonts.js
@@ -58,7 +58,7 @@ class font extends make {
   static family () {
     let s = random.pick(font.familyName)
     if (random.chance(8)) {
-      s += ', ' + random.pick(font.genericFamily)
+      s += `, ${random.pick(font.genericFamily)}`
     }
     return s
   }
@@ -86,16 +86,16 @@ class font extends make {
   static font () {
     let s = ''
     if (random.chance(4)) {
-      s += random.pick(font.style) + ' '
+      s += `${random.pick(font.style)} `
     }
     if (random.chance(4)) {
-      s += random.pick(font.variant) + ' '
+      s += `${random.pick(font.variant)} `
     }
     if (random.chance(4)) {
-      s += random.pick(font.weight) + ' '
+      s += `${random.pick(font.weight)} `
     }
     if (random.chance(4)) {
-      s += make.number.any() + '/'
+      s += `${make.number.any()}/`
     }
     s += font.size()
     s += ' '
diff --git a/lib/make/network.js b/lib/make/network.js
index a1a16aa..505d6c8 100644
--- a/lib/make/network.js
+++ b/lib/make/network.js
@@ -52,7 +52,7 @@ class network extends make {
       random.pick([0, 1, make.number.any]),
       ' ',
       random.pick(['UDP', 'TCP', 'SCTP']),
-      random.pick(['', '/' + random.pick(['DTLS', 'DTLS-SRTP'])]),
+      random.pick(['', `/${random.pick(['DTLS', 'DTLS-SRTP'])}`]),
       ' ',
       random.pick([make.number.any]),
       ' ',
@@ -117,10 +117,11 @@ class network extends make {
   }
 
   static randomIPv4 () {
-    return random.pick([random.number(255), make.number.any]) + '.' +
-      random.pick([random.number(255), make.number.any]) + '.' +
-      random.pick([random.number(255), make.number.any]) + '.' +
-      random.pick([random.number(255), make.number.any])
+    function octet () {
+      return random.pick([random.number(255), make.number.any])
+    }
+
+    return `${octet()}.${octet()}.${octet()}.${octet()}.`
   }
 
   static randomIPv6 () {
@@ -188,7 +189,7 @@ class network extends make {
       '',
       '#',
       '#main-content',
-      () => '#' + make.text.any()
+      () => `#${make.text.any()}`
     ])
   }
 
@@ -197,19 +198,19 @@ class network extends make {
       '',
       '/',
       '/index.html',
-      () => '/' + make.text.any()
+      () => `/${make.text.any()}`
     ])
   }
 
   static protocol () {
-    return random.pick([
+    return `${random.pick([
       'http',
       'https',
       'ftp',
       'telnet',
       'chrome',
       'resource'
-    ]) + ':'
+    ])}:`
   }
 
   static search () {
@@ -217,7 +218,7 @@ class network extends make {
       '',
       '?',
       '?foo=bar',
-      () => '?' + make.text.any()
+      () => `?${make.text.any()}`
     ])
   }
 
@@ -228,7 +229,7 @@ class network extends make {
     let max = random.range(2, list.length)
     let mask = random.pick(list)
     for (let i = 1; i < max; i++) {
-      mask += '|' + random.pick(list)
+      mask += `|${random.pick(list)}`
     }
     return mask
   }
diff --git a/lib/make/typed.js b/lib/make/typed.js
index 5f957a6..53bc4e1 100644
--- a/lib/make/typed.js
+++ b/lib/make/typed.js
@@ -10,45 +10,45 @@ class typed extends make {
     // [-128, 127]
     let value = (limit !== null) ? random.number(limit) : random.number(129)
     value = random.chance(10) ? -value : value
-    return 'new Uint8Array([' + value + '])[0]'
+    return `new Uint8Array([${value}])[0]`
   }
 
   static octet (limit = null) {
     // [0, 255]
     let value = (limit !== null) ? random.number(limit) : random.number(256)
-    return 'new Int8Array([' + value + '])[0]'
+    return `new Int8Array([${value}])[0]`
   }
 
   static short (limit = null) {
     // [-32768, 32767]
     let value = (limit !== null) ? random.number(limit) : random.number(32769)
     value = random.chance(10) ? -value : value
-    return 'new Int16Array([' + value + '])[0]'
+    return `new Int16Array([${value}])[0]`
   }
 
   static unsignedShort (limit = null) {
     // [0, 65535]
     let value = (limit !== null) ? random.number(limit) : random.number(65535)
-    return 'new Uint16Array([' + value + '])[0]'
+    return `new Uint16Array([${value}])[0]`
   }
 
   static long (limit = null) {
     // [-2147483648, 2147483647]
     let value = (limit !== null) ? random.number(limit) : random.number(2147483649)
     value = random.chance(10) ? -value : value
-    return 'new Int32Array([' + value + '])[0]'
+    return `new Int32Array([${value}])[0]`
   }
 
   static unsignedLong (limit = null) {
     // [0, 4294967295]
     let value = (limit !== null) ? random.number(limit) : random.number(4294967296)
-    return 'new Uint32Array([' + value + '])[0]'
+    return `new Uint32Array([${value}])[0]`
   }
 
   static float (limit = null) {
     let base = (limit !== null) ? random.number(limit) : random.number()
     let value = random.chance(10) ? -(base + random.float()) : (base + random.float())
-    return 'new Float32Array([' + value + '])[0]'
+    return `new Float32Array([${value}])[0]`
   }
 
   static unrestrictedFloat (limit = null) {
@@ -56,14 +56,14 @@ class typed extends make {
       return random.pick([NaN, +Infinity, -Infinity])
     } else {
       let base = (limit !== null) ? random.number(limit) : random.number()
-      return 'new Float32Array([' + (base + random.float()) + '])[0]'
+      return `new Float32Array([${base + random.float()}])[0]`
     }
   }
 
   static double (limit = null) {
     let base = (limit !== null) ? random.number(limit) : random.number()
     let value = random.chance(10) ? -(base + random.float()) : (base + random.float())
-    return 'new Float64Array([' + value + '])[0]'
+    return `new Float64Array([${value}])[0]`
   }
 
   static unrestrictedDouble (limit = null) {
@@ -72,7 +72,7 @@ class typed extends make {
     } else {
       let base = (limit !== null) ? random.number(limit) : random.number()
       let value = random.chance(10) ? -(base + random.float()) : (base + random.float())
-      return 'new Float64Array([' + value + '])[0]'
+      return `new Float64Array([${value}])[0]`
     }
   }
 
@@ -89,12 +89,12 @@ class typed extends make {
 
   static arrayBuffer (byteLength = null) {
     let length = (byteLength !== null) ? byteLength : typed.unsignedShort()
-    return 'new ArrayBuffer(' + length + ')'
+    return `new ArrayBuffer(${length})`
   }
 
   static dataView (byteLength = null) {
     let length = (byteLength !== null) ? byteLength : typed.unsignedShort()
-    return 'new DataView(' + typed.arrayBuffer(length) + ')'
+    return `new DataView(${typed.arrayBuffer(length)})`
   }
 
   static typedArray (byteLength = null) {
@@ -105,14 +105,14 @@ class typed extends make {
       'Int32', 'Uint32',
       'Float32', 'Float64'
     ])
-    let method = 'new ' + arrType + 'Array'
+    let method = `new ${arrType}Array`
     switch (random.number(16)) {
       case 0:
-        return method + '()'
+        return `${method}()`
       case 1:
-        return method + '(' + this.typedArray() + ')'
+        return `${method}(${this.typedArray()})`
       default:
-        return method + '(' + length + ')'
+        return `${method}(${length})`
     }
   }
 
diff --git a/lib/make/units.js b/lib/make/units.js
index c27151a..f9f8c3b 100644
--- a/lib/make/units.js
+++ b/lib/make/units.js
@@ -17,7 +17,7 @@ class unit extends make {
   }
 
   static percent () {
-    return make.number.any() + '%'
+    return `${make.number.any()}%`
   }
 }
 
diff --git a/lib/make/uri.js b/lib/make/uri.js
index cfa9fa3..67a1fc5 100644
--- a/lib/make/uri.js
+++ b/lib/make/uri.js
@@ -25,7 +25,7 @@ class uri extends make {
       'data:image/png,',
       'data:',
       'javascript:5555',
-      'javascript:"QQQQ' + String.fromCharCode(0) + 'UUUU"',
+      `javascript:"QQQQ${String.fromCharCode(0)}UUUU"`,
       'http://a.invalid/',
       'http://localhost:6/',
       'https://localhost:6/',
diff --git a/lib/make/webgl.js b/lib/make/webgl.js
index 79b11ea..14e2400 100644
--- a/lib/make/webgl.js
+++ b/lib/make/webgl.js
@@ -340,7 +340,7 @@ class webgl extends make {
     ]
     if (isWebGL2) {
       attachment.extend([
-        'COLOR_ATTACHMENT' + random.range(0, 15)
+        `COLOR_ATTACHMENT${random.range(0, 15)}`
       ])
     }
     return random.item(attachment)
diff --git a/lib/utils/common.js b/lib/utils/common.js
index 3877221..f9b3101 100644
--- a/lib/utils/common.js
+++ b/lib/utils/common.js
@@ -7,9 +7,9 @@ const utils = require('../utils')
 class common extends utils {
   static objToString (obj) {
     try {
-      return '' + obj
+      return `${obj}`
     } catch (e) {
-      return '[' + e + ']'
+      return `[${e}]`
     }
   }
 
@@ -58,7 +58,7 @@ class common extends utils {
     // https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding#The_Unicode_Problem
     if (process.browser) {
       return decodeURIComponent(atob(str).split('').map(function (c) {
-        return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)
+        return `%${('00' + c.charCodeAt(0).toString(16)).slice(-2)}`
       }).join(''))
     } else {
       return Buffer.from(str, 'base64').toString('ascii')
diff --git a/lib/utils/objects.js b/lib/utils/objects.js
index 5460110..ee7ef0e 100644
--- a/lib/utils/objects.js
+++ b/lib/utils/objects.js
@@ -30,7 +30,7 @@ class Objects {
     if (!(category in this.container)) {
       // return {type:null, name:null};
       logger.traceback()
-      throw new Error(category + ' is not available.')
+      throw new Error(`${category} is not available.`)
     }
     if (last) {
       return this.container[category].slice(-1)[0]
@@ -43,7 +43,7 @@ class Objects {
       return this.get(category, last).name
     } catch (e) {
       logger.traceback()
-      throw logger.JSError('Error: pick(\'' + category + '\') is undefined.')
+      throw logger.JSError(`Error: pick('${category}') is undefined.`)
     }
   }
 
diff --git a/lib/utils/platform.js b/lib/utils/platform.js
index 2905ff4..6dbca47 100644
--- a/lib/utils/platform.js
+++ b/lib/utils/platform.js
@@ -56,10 +56,10 @@ class platform extends utils {
     function platformName (candidates) {
       for (let i = 0; i < candidates.length; i++) {
         if (candidates[i] in window) {
-          return 'window.' + candidates[i]
+          return `window.${candidates[i]}`
         }
         if (candidates[i] in navigator) {
-          return 'navigator.' + candidates[i]
+          return `navigator.${candidates[i]}`
         }
       }
       return undefined
diff --git a/lib/utils/script.js b/lib/utils/script.js
index bf09ca0..6c730a1 100644
--- a/lib/utils/script.js
+++ b/lib/utils/script.js
@@ -29,7 +29,7 @@ class script extends utils {
     if (typeof (methodArgs) === 'function') { // Todo: Hmmmm..
       return methodArgs()
     }
-    return objectName + '.' + methodName + script.methodHead(methodArgs)
+    return `${objectName}.${methodName}${script.methodHead(methodArgs)}`
   }
 
   static setAttribute (objectName, attributeHash) {
@@ -47,7 +47,7 @@ class script extends utils {
      attributeValue = "'" + attributeValue + "'";
      }
      */
-    return objectName + '.' + attributeName + operator + attributeValue + ';'
+    return `${objectName}.${attributeName}${operator}${attributeValue};`
   }
 
   static makeConstraint (keys, values) {
@@ -77,7 +77,7 @@ class script extends utils {
   }
 
   static makeLoop (s, max) {
-    return 'for (let i = 0; i < ' + (max || make.number.range()) + '; i++) {' + s + '}'
+    return `for (let i = 0; i < ${max || make.number.range()}; i++) {${s}}`
   }
 
   static makeArray (type, arrayLength, cb) {
@@ -86,8 +86,8 @@ class script extends utils {
     }
     switch (random.number(8)) {
       case 0:
-        let src = 'function() { let buffer = new ' + type + 'Array(' + arrayLength + ');'
-        src += script.makeLoop('buffer[i] = ' + cb() + ';', arrayLength)
+        let src = `function() { let buffer = new ${type}Array(${arrayLength});`
+        src += script.makeLoop(`buffer[i] = ${cb()};`, arrayLength)
         src += 'return buffer;}()'
         return src
       case 1:
@@ -98,7 +98,7 @@ class script extends utils {
   }
 
   static randListIndex (objName) {
-    return random.number() + ' % ' + o.pick(objName) + '.length'
+    return `${random.number()} % ${o.pick(objName)}.length`
   }
 
   static addElementToBody (name) {