diff --git a/index.js b/index.js
index 74b941f..edf446c 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,9 @@
 var imagemin = require('imagemin');
 var loaderUtils = require('loader-utils');
 var assign = require('object-assign');
+var schemaValidation = require('schema-utils')
 
+var loaderSchema = require('./schema.json')
 /**
  * Basically the getLoaderConfig() function from loader-utils v0.2.
  */
@@ -37,7 +39,7 @@ module.exports = function(content) {
     optipng: config.optipng || {},
     svgo: config.svgo || {},
     // optional optimizers
-    webp: config.webp || null
+    webp: config.webp || {}
   };
   // Remove in interlaced, progressive and optimizationLevel checks in new major version
   if (config.hasOwnProperty('interlaced')) {
@@ -53,6 +55,10 @@ module.exports = function(content) {
     this.emitWarning("DEPRECATED. Configure optipng's optimizationLevel option in its own options. (optipng.optimizationLevel)");
   }
 
+  schemaValidation(loaderSchema, options, {
+    name: 'imageWebpackLoader'
+  });
+  
   var callback = this.async(),
     called = false;
 
diff --git a/package-lock.json b/package-lock.json
index 4f4a664..78ebbd7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -247,16 +247,15 @@
       "dev": true
     },
     "acorn": {
-      "version": "6.3.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.3.0.tgz",
-      "integrity": "sha512-/czfa8BwS88b9gWQVhc8eknunSA2DoJpJyTQkhheIf5E48u1N0R4q/YxxsAeqRrmK9TQ/uYfgLDfZo91UlANIA==",
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.0.tgz",
+      "integrity": "sha512-gac8OEcQ2Li1dxIEWGZzsp2BitJxwkwcOm0zHAJLcPJaVvm58FRnk6RkuLRpU1EujipU2ZFODv2P9DLMfnV8mw==",
       "dev": true
     },
     "ajv": {
       "version": "6.10.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
       "integrity": "sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==",
-      "dev": true,
       "requires": {
         "fast-deep-equal": "^2.0.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -273,8 +272,7 @@
     "ajv-keywords": {
       "version": "3.4.1",
       "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.4.1.tgz",
-      "integrity": "sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==",
-      "dev": true
+      "integrity": "sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ=="
     },
     "ansi-regex": {
       "version": "2.1.1",
@@ -751,9 +749,9 @@
       }
     },
     "bluebird": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.1.tgz",
-      "integrity": "sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg==",
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
+      "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==",
       "dev": true
     },
     "bn.js": {
@@ -970,9 +968,9 @@
       },
       "dependencies": {
         "graceful-fs": {
-          "version": "4.2.2",
-          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.2.tgz",
-          "integrity": "sha512-IItsdsea19BoLC7ELy13q1iJFNmd7ofZH5+X/pJr90/nRoPEX0DJo1dHDbgtYWOhJhcCgMDTOw84RZ72q6lB+Q==",
+          "version": "4.2.3",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
+          "integrity": "sha512-a30VEBm4PEdx1dRB7MFK7BejejvCvBronbLjht+sHuGYj8PHs7M/5Z+rt5lw551vZ7yfTCj4Vuyy3mSJytDWRQ==",
           "dev": true
         },
         "lru-cache": {
@@ -1276,13 +1274,10 @@
       }
     },
     "console-browserify": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.1.0.tgz",
-      "integrity": "sha1-8CQcRXMKn8YyOyBtvzjtx0HQuxA=",
-      "dev": true,
-      "requires": {
-        "date-now": "^0.1.4"
-      }
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.2.0.tgz",
+      "integrity": "sha512-ZMkYO/LkF17QvCPqM0gxw8yUzigAOZOSWSHg91FH6orS7vcEj5dVZTidN2fQ14yBSdg97RqhSNwLUXInd52OTA==",
+      "dev": true
     },
     "console-stream": {
       "version": "0.1.1",
@@ -1498,12 +1493,6 @@
       "integrity": "sha1-WW6WmP0MgOEgOMK4LW6xs1tiJNk=",
       "dev": true
     },
-    "date-now": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/date-now/-/date-now-0.1.4.tgz",
-      "integrity": "sha1-6vQ5/U1ISK105cx9vvIAZyueNFs=",
-      "dev": true
-    },
     "debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -1688,9 +1677,9 @@
       }
     },
     "des.js": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/des.js/-/des.js-1.0.0.tgz",
-      "integrity": "sha1-wHTS4qpqipoH29YfmhXCzYPsjsw=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/des.js/-/des.js-1.0.1.tgz",
+      "integrity": "sha512-Q0I4pfFrv2VPd34/vfLrFOoRmlYj3OV50i7fskps1jZWK1kApMWWT9G6RRUeYedLcBDIhnSDaUvJMb3AhUlaEA==",
       "dev": true,
       "requires": {
         "inherits": "^2.0.1",
@@ -1821,9 +1810,9 @@
       }
     },
     "elliptic": {
-      "version": "6.5.1",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.1.tgz",
-      "integrity": "sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==",
+      "version": "6.5.2",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
+      "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
       "dev": true,
       "requires": {
         "bn.js": "^4.4.0",
@@ -1855,14 +1844,26 @@
       }
     },
     "enhanced-resolve": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.0.tgz",
-      "integrity": "sha512-F/7vkyTtyc/llOIn8oWclcB25KdRaiPBpZYDgJHgh/UHtpgT2p2eldQgtQnLtUvfMKPKxbRaQM/hHkvLHt1Vng==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.1.tgz",
+      "integrity": "sha512-98p2zE+rL7/g/DzMHMTF4zZlCgeVdJ7yr6xzEpJRYwFYrGi9ANdn5DnJURg6RpBkyk60XYDnWIv51VfIhfNGuA==",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.1.2",
-        "memory-fs": "^0.4.0",
+        "memory-fs": "^0.5.0",
         "tapable": "^1.0.0"
+      },
+      "dependencies": {
+        "memory-fs": {
+          "version": "0.5.0",
+          "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.5.0.tgz",
+          "integrity": "sha512-jA0rdU5KoQMC0e6ppoNRtpp6vjFq6+NY7r8hywnC7V+1Xj/MtHwGIbB1QaK/dunyjWteJzmkpd7ooeWg10T7GA==",
+          "dev": true,
+          "requires": {
+            "errno": "^0.1.3",
+            "readable-stream": "^2.0.1"
+          }
+        }
       }
     },
     "entities": {
@@ -2171,8 +2172,7 @@
     "fast-deep-equal": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
-      "dev": true
+      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk="
     },
     "fast-glob": {
       "version": "3.1.0",
@@ -2237,8 +2237,7 @@
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
-      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I=",
-      "dev": true
+      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
     },
     "fastq": {
       "version": "1.6.0",
@@ -5058,8 +5057,7 @@
     "json-schema-traverse": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
-      "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
-      "dev": true
+      "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
     },
     "json5": {
       "version": "1.0.1",
@@ -5555,9 +5553,9 @@
           "dev": true
         },
         "buffer": {
-          "version": "4.9.1",
-          "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
-          "integrity": "sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=",
+          "version": "4.9.2",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.2.tgz",
+          "integrity": "sha512-xq+q3SRMOxGivLhBNaUdC64hDTQwejJ+H0T/NB1XMtTVEwNTrfFF3gAxiyW0Bu/xWEGhjVKgUcMhCrUy2+uCWg==",
           "dev": true,
           "requires": {
             "base64-js": "^1.0.2",
@@ -6217,8 +6215,7 @@
     "punycode": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-      "dev": true
+      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
     },
     "q": {
       "version": "1.5.1",
@@ -6496,14 +6493,12 @@
       "optional": true
     },
     "schema-utils": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
-      "integrity": "sha512-i27Mic4KovM/lnGsy8whRCHhc7VicJajAjTrYg11K9zfZXnYIt4k5F+kZkwjnrhKzLic/HLU4j11mjsz2G/75g==",
-      "dev": true,
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-2.6.1.tgz",
+      "integrity": "sha512-0WXHDs1VDJyo+Zqs9TKLKyD/h7yDpHUhEFsM2CzkICFdoX1av+GBq/J2xRTFfsQO5kBfhZzANf2VcIm84jqDbg==",
       "requires": {
-        "ajv": "^6.1.0",
-        "ajv-errors": "^1.0.0",
-        "ajv-keywords": "^3.1.0"
+        "ajv": "^6.10.2",
+        "ajv-keywords": "^3.4.1"
       }
     },
     "seek-bzip": {
@@ -6536,9 +6531,9 @@
       }
     },
     "serialize-javascript": {
-      "version": "1.9.1",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.9.1.tgz",
-      "integrity": "sha512-0Vb/54WJ6k5v8sSWN09S0ora+Hnr+cX40r9F170nT+mSkaxltoE/7R3OrIdBSUv1OoiobH1QoWQbCnAO+e8J1A==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-2.1.1.tgz",
+      "integrity": "sha512-MPLPRpD4FNqWq9tTIjYG5LesFouDhdyH0EPY3gVK4DRD5+g4aDqdNSzLIwceulo3Yj+PL1bPh6laE5+H6LTcrQ==",
       "dev": true
     },
     "set-blocking": {
@@ -6759,9 +6754,9 @@
       }
     },
     "source-map-support": {
-      "version": "0.5.13",
-      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.13.tgz",
-      "integrity": "sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==",
+      "version": "0.5.16",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.16.tgz",
+      "integrity": "sha512-efyLRJDr68D9hBBNIPWFjhpFzURh+KJykQwvMyW5UiZzYwoF6l4YMMDIJJEyFWxWCqfyxLzz6tSfUFR+kXXsVQ==",
       "dev": true,
       "requires": {
         "buffer-from": "^1.0.0",
@@ -7073,9 +7068,9 @@
       }
     },
     "terser": {
-      "version": "4.3.9",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.9.tgz",
-      "integrity": "sha512-NFGMpHjlzmyOtPL+fDw3G7+6Ueh/sz4mkaUYa4lJCxOPTNzd0Uj0aZJOmsDYoSQyfuVoWDMSWTPU3huyOm2zdA==",
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.4.2.tgz",
+      "integrity": "sha512-Uufrsvhj9O1ikwgITGsZ5EZS6qPokUOkCegS7fYOdGTv+OA90vndUbU6PEjr5ePqHfNUbGyMO7xyIZv2MhsALQ==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",
@@ -7098,22 +7093,33 @@
       }
     },
     "terser-webpack-plugin": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-1.4.1.tgz",
-      "integrity": "sha512-ZXmmfiwtCLfz8WKZyYUuuHf3dMYEjg8NrjHMb0JqHVHVOSkzp3cW2/XG1fP3tRhqEqSzMwzzRQGtAPbs4Cncxg==",
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-1.4.2.tgz",
+      "integrity": "sha512-fdEb91kR2l+BVgES77N/NTXWZlpX6vX+pYPjnX5grcDYBF2CMnzJiXX4NNlna4l04lvCW39lZ+O/jSvUhHH/ew==",
       "dev": true,
       "requires": {
         "cacache": "^12.0.2",
         "find-cache-dir": "^2.1.0",
         "is-wsl": "^1.1.0",
         "schema-utils": "^1.0.0",
-        "serialize-javascript": "^1.7.0",
+        "serialize-javascript": "^2.1.1",
         "source-map": "^0.6.1",
         "terser": "^4.1.2",
         "webpack-sources": "^1.4.0",
         "worker-farm": "^1.7.0"
       },
       "dependencies": {
+        "schema-utils": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
+          "integrity": "sha512-i27Mic4KovM/lnGsy8whRCHhc7VicJajAjTrYg11K9zfZXnYIt4k5F+kZkwjnrhKzLic/HLU4j11mjsz2G/75g==",
+          "dev": true,
+          "requires": {
+            "ajv": "^6.1.0",
+            "ajv-errors": "^1.0.0",
+            "ajv-keywords": "^3.1.0"
+          }
+        },
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -7351,7 +7357,6 @@
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
       "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
-      "dev": true,
       "requires": {
         "punycode": "^2.1.0"
       }
@@ -7448,9 +7453,9 @@
       }
     },
     "vm-browserify": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.0.tgz",
-      "integrity": "sha512-iq+S7vZJE60yejDYM0ek6zg308+UZsdtPExWP9VZoCFCz1zkJoXFnAX7aZfd/ZwrkidzdUZL0C/ryW+JwAiIGw==",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.2.tgz",
+      "integrity": "sha512-2ham8XPWTONajOR0ohOKOHXkm3+gaBmGut3SRuu75xLd/RRaY6vqgh8NBYYk7+RW3u5AtzPQZG8F10LHkl0lAQ==",
       "dev": true
     },
     "watchpack": {
@@ -7493,6 +7498,19 @@
         "terser-webpack-plugin": "^1.4.1",
         "watchpack": "^1.6.0",
         "webpack-sources": "^1.4.1"
+      },
+      "dependencies": {
+        "schema-utils": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
+          "integrity": "sha512-i27Mic4KovM/lnGsy8whRCHhc7VicJajAjTrYg11K9zfZXnYIt4k5F+kZkwjnrhKzLic/HLU4j11mjsz2G/75g==",
+          "dev": true,
+          "requires": {
+            "ajv": "^6.1.0",
+            "ajv-errors": "^1.0.0",
+            "ajv-keywords": "^3.1.0"
+          }
+        }
       }
     },
     "webpack-cli": {
@@ -7558,6 +7576,17 @@
             "which": "^1.2.9"
           }
         },
+        "enhanced-resolve": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.0.tgz",
+          "integrity": "sha512-F/7vkyTtyc/llOIn8oWclcB25KdRaiPBpZYDgJHgh/UHtpgT2p2eldQgtQnLtUvfMKPKxbRaQM/hHkvLHt1Vng==",
+          "dev": true,
+          "requires": {
+            "graceful-fs": "^4.1.2",
+            "memory-fs": "^0.4.0",
+            "tapable": "^1.0.0"
+          }
+        },
         "supports-color": {
           "version": "6.1.0",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
diff --git a/package.json b/package.json
index f85c243..76ca668 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,8 @@
   "dependencies": {
     "imagemin": "^7.0.0",
     "loader-utils": "^1.2.3",
-    "object-assign": "^4.1.1"
+    "object-assign": "^4.1.1",
+    "schema-utils": "^2.6.1"
   },
   "optionalDependencies": {
     "imagemin-gifsicle": "^6.0.1",
@@ -32,7 +33,7 @@
   "devDependencies": {
     "file-loader": "^5.0.2",
     "rimraf": "^3.0.0",
-    "webpack": "^4.39.3",
-    "webpack-cli": "^3.3.7"
+    "webpack": "^4.41.2",
+    "webpack-cli": "^3.3.10"
   }
 }
diff --git a/schema.json b/schema.json
new file mode 100644
index 0000000..b2b4161
--- /dev/null
+++ b/schema.json
@@ -0,0 +1,36 @@
+{
+  "additionalProperties": false,
+  "properties": {
+    "mozjpeg": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "optipng": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "pngquant": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "gifsicle": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "webp": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "svgo": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "bypassOnDebug": {
+      "type": "boolean"
+    },
+    "disable": {
+      "type": "boolean"
+    }
+  },
+  "type": "object"
+}