diff --git a/bench/.eslintrc b/bench/.eslintrc
new file mode 100644
index 00000000000..109398c8edd
--- /dev/null
+++ b/bench/.eslintrc
@@ -0,0 +1,11 @@
+{
+  "extends": "../.eslintrc",
+  "env": {
+    "browser": true
+  },
+  "globals": {
+    "suite": true,
+    "benchmark": true,
+    "Plotly": true
+  }
+}
diff --git a/bench/karma.conf.js b/bench/karma.conf.js
new file mode 100644
index 00000000000..255a3c8ae6a
--- /dev/null
+++ b/bench/karma.conf.js
@@ -0,0 +1,88 @@
+/* eslint-env node*/
+
+var pkg = require('../package.json');
+var execSync = require('child_process').execSync;
+
+function func(config) {
+    func.defaultConfig.logLevel = config.LOG_INFO;
+    func.defaultConfig.browserConsoleLogOptions = {level: 'log'};
+    config.set(func.defaultConfig);
+}
+
+func.defaultConfig = {
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '.',
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['browserify', 'benchmark'],
+    reporters: ['benchmark', 'benchmark-json'],
+
+    // list of files / patterns to load in the browser
+    files: [
+        '../build/plotly.js',
+        './suites/*_bench.js'
+    ],
+
+    preprocessors: {
+        './suites/*_bench.js': ['browserify']
+    },
+
+    browserify: {
+        transform: ['../tasks/util/shortcut_paths.js'],
+        extensions: ['.js'],
+        debug: true
+    },
+
+    benchmarkJsonReporter: {
+        pathToJson: '../dist/benchmarks.json',
+        formatOutput: function(results) {
+            return {
+                meta: {
+                    version: pkg.version,
+                    commit: execSync('git rev-parse HEAD').toString().replace('\n', ''),
+                    date: (new Date()).toTimeString()
+                },
+                results: results
+            };
+        }
+    },
+
+    // web server port
+    port: 9876,
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: false,
+
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: true,
+
+    // how long will Karma wait for a message from a browser before disconnecting (30 ms)
+    browserNoActivityTimeout: 30000,
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['Chrome_WindowSized'],
+
+    // custom browser options
+    //
+    // window-size values came from observing default size
+    //
+    // '--ignore-gpu-blacklist' allow to test WebGL on CI (!!!)
+    customLaunchers: {
+        Chrome_WindowSized: {
+            base: 'Chrome',
+            flags: ['--window-size=1035,617', '--ignore-gpu-blacklist']
+        },
+        Firefox_WindowSized: {
+            base: 'Firefox',
+            flags: ['--width=1035', '--height=617']
+        }
+    }
+};
+
+module.exports = func;
diff --git a/bench/suites/lib_bench.js b/bench/suites/lib_bench.js
new file mode 100644
index 00000000000..8978f9ab08a
--- /dev/null
+++ b/bench/suites/lib_bench.js
@@ -0,0 +1,16 @@
+var Lib = require('@src/lib');
+
+suite('Benchmark: lib functions', function() {
+
+    benchmark('Lib.cleanNumber', function() {
+        [
+            0, 1, 2, 1234.567,
+            -1, -100, -999.999,
+            Number.MAX_VALUE, Number.MIN_VALUE, Number.EPSILON,
+            -Number.MAX_VALUE, -Number.MIN_VALUE, -Number.EPSILON,
+            NaN, Infinity, -Infinity, null, undefined, new Date(), '',
+            ' ', '\t', '2\t2', '2%2', '2$2', {1: 2}, [1], ['1'], {}, []
+        ]
+        .forEach(Lib.cleanNumber);
+    });
+});
diff --git a/bench/suites/plot_big_data_bench.js b/bench/suites/plot_big_data_bench.js
new file mode 100644
index 00000000000..02131bbfd7a
--- /dev/null
+++ b/bench/suites/plot_big_data_bench.js
@@ -0,0 +1,36 @@
+var suiteOpts = {
+    defer: true
+};
+
+var benchmarkOpts = {
+    setup: function() {
+        this.gd = document.createElement('div');
+        document.body.appendChild(this.gd);
+    },
+    teardown: function() {
+        Plotly.purge(this.gd);
+        document.body.removeChild(this.gd);
+    }
+};
+
+suite('Benchmark: plotting large data', function() {
+    var N = 1e5;
+
+    var trace = {
+        type: 'scattergl',
+        x: new Array(N),
+        y: new Array(N)
+    };
+
+    for(var i = 0; i < N; i++) {
+        trace.x[i] = Math.random();
+        trace.y[i] = Math.random();
+    }
+
+    benchmark('scattergl 1e5 pts', function(deferred) {
+        Plotly.plot(this.gd, [trace]).then(function() {
+            deferred.resolve();
+        });
+    }, benchmarkOpts);
+
+}, suiteOpts);
diff --git a/bench/suites/plot_mock_bench.js b/bench/suites/plot_mock_bench.js
new file mode 100644
index 00000000000..c6e06848ea1
--- /dev/null
+++ b/bench/suites/plot_mock_bench.js
@@ -0,0 +1,35 @@
+var suiteOpts = {
+    defer: true
+};
+
+var benchmarkOpts = {
+    setup: function() {
+        this.gd = document.createElement('div');
+        document.body.appendChild(this.gd);
+    },
+
+    teardown: function() {
+        Plotly.purge(this.gd);
+        document.body.removeChild(this.gd);
+    }
+};
+
+suite('Benchmark: plotting image mocks', function() {
+
+    benchmark('17.json', function(deferred) {
+        var mock = require('@mocks/17.json');
+
+        Plotly.plot(this.gd, mock).then(function() {
+            deferred.resolve();
+        });
+    }, benchmarkOpts);
+
+    benchmark('contour_match_edges', function(deferred) {
+        var mock = require('@mocks/contour_match_edges.json');
+
+        Plotly.plot(this.gd, mock).then(function() {
+            deferred.resolve();
+        });
+    }, benchmarkOpts);
+
+}, suiteOpts);
diff --git a/dist/benchmarks.json b/dist/benchmarks.json
new file mode 100644
index 00000000000..e8fb3e91586
--- /dev/null
+++ b/dist/benchmarks.json
@@ -0,0 +1,169 @@
+{
+  "meta": {
+    "version": "1.34.0",
+    "commit": "086729780205212fb55c33f27b5a845692f94593",
+    "date": "15:09:07 GMT-0500 (EST)"
+  },
+  "results": [
+    {
+      "fullName": "Benchmark: lib function--Lib.cleanNumber-Chrome 64.0.3282 (Linux 0.0.0)",
+      "browser": "Chrome 64.0.3282 (Linux 0.0.0)",
+      "suite": "Benchmark: lib functions",
+      "name": "Lib.cleanNumber",
+      "count": 62762,
+      "cycles": 6,
+      "hz": 803408.2211279911,
+      "hzDeviation": 31147.317130974046,
+      "mean": 0.000001244697245686623,
+      "deviation": 4.9312117524292397e-8,
+      "variance": 2.431684934729625e-15,
+      "moe": 1.1988174201948626e-8,
+      "rme": 0.9631397710160021,
+      "sem": 6.116415409157463e-9,
+      "sample": [
+        0.0000012602497585885203,
+        0.0000013093503985335276,
+        0.0000012766166385701893,
+        0.0000012111425111021396,
+        0.0000012272910779168348,
+        0.0000012111425111021396,
+        0.0000012434396447315301,
+        0.0000012272910779168348,
+        0.0000012272910779168348,
+        0.0000012595882115462252,
+        0.0000012757367783609204,
+        0.0000012918853451756157,
+        0.0000012918853451756157,
+        0.0000012595882115462252,
+        0.0000013403310456197013,
+        0.000001404925312878482,
+        0.0000015179652805813483,
+        0.0000012918853451756157,
+        0.0000012272910779168348,
+        0.0000012434396447315301,
+        0.0000012434396447315301,
+        0.0000012111425111021396,
+        0.0000012272910779168348,
+        0.0000012434396447315301,
+        0.0000012111425111021396,
+        0.0000012434396447315301,
+        0.0000012587234313756732,
+        0.000001242790223383576,
+        0.0000012268570153914788,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.000001242790223383576,
+        0.000001242790223383576,
+        0.000001242790223383576,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.0000012268570153914788,
+        0.0000012268570153914788,
+        0.0000012268570153914788,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.000001242790223383576,
+        0.0000012109238073993817,
+        0.0000012587234313756732,
+        0.0000012268570153914788,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.0000012268570153914788,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.0000012268570153914788,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.0000013065230553519646,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.0000012109238073993817,
+        0.000001242790223383576,
+        0.0000012268570153914788,
+        0.0000012587234313756732,
+        0.0000011949905994072847
+      ]
+    },
+    {
+      "fullName": "Benchmark: plotting image mock--17.j-on-Chrome 64.0.3282 (Linux 0.0.0)",
+      "browser": "Chrome 64.0.3282 (Linux 0.0.0)",
+      "suite": "Benchmark: plotting image mocks",
+      "name": "17.json",
+      "count": 2,
+      "cycles": 2,
+      "hz": 4.085338175215615,
+      "hzDeviation": 6.425304603128786,
+      "mean": 0.24477777777777782,
+      "deviation": 0.3180914875384823,
+      "variance": 0.10118219444444447,
+      "moe": 0.24450632342124673,
+      "rme": 99.8891017154435,
+      "sem": 0.10603049584616077,
+      "sample": [
+        0.099,
+        0.0785,
+        0.0535,
+        0.0555,
+        0.0945,
+        0.1165,
+        0.1915,
+        0.5105,
+        1.0035
+      ]
+    },
+    {
+      "fullName": "Benchmark: plotting image mock--contour_match_edge--Chrome 64.0.3282 (Linux 0.0.0)",
+      "browser": "Chrome 64.0.3282 (Linux 0.0.0)",
+      "suite": "Benchmark: plotting image mocks",
+      "name": "contour_match_edges",
+      "count": 2,
+      "cycles": 2,
+      "hz": 2.142966477881525,
+      "hzDeviation": 4.4391330743125605,
+      "mean": 0.4666428571428571,
+      "deviation": 0.522579875416645,
+      "variance": 0.27308972619047617,
+      "moe": 0.48332318680019437,
+      "rme": 103.57453872956867,
+      "sem": 0.19751662721707983,
+      "sample": [
+        0.096,
+        0.09,
+        0.133,
+        0.269,
+        0.412,
+        0.735,
+        1.5315
+      ]
+    },
+    {
+      "fullName": "Benchmark: plotting large data--cattergl 1e5 pt--Chrome 64.0.3282 (Linux 0.0.0)",
+      "browser": "Chrome 64.0.3282 (Linux 0.0.0)",
+      "suite": "Benchmark: plotting large data",
+      "name": "scattergl 1e5 pts",
+      "count": 1,
+      "cycles": 1,
+      "hz": 1.1568335812262438,
+      "hzDeviation": 0.6908011723020978,
+      "mean": 0.8644285714285713,
+      "deviation": 0.42061853547002936,
+      "variance": 0.17691995238095234,
+      "moe": 0.3890212779979738,
+      "rme": 45.00328781996062,
+      "sem": 0.1589788630968426,
+      "sample": [
+        0.569,
+        0.443,
+        1.434,
+        1.132,
+        1.329,
+        0.489,
+        0.655
+      ]
+    }
+  ]
+}
diff --git a/package-lock.json b/package-lock.json
index a984a484240..1770bb777c1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -787,6 +787,16 @@
         "tweetnacl": "0.14.5"
       }
     },
+    "benchmark": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/benchmark/-/benchmark-2.1.3.tgz",
+      "integrity": "sha1-4Q5A5NU9Dhydd6g0/eWTmU3Kfww=",
+      "dev": true,
+      "requires": {
+        "lodash": "4.17.5",
+        "platform": "1.3.3"
+      }
+    },
     "better-assert": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
@@ -5375,6 +5385,15 @@
         "ansi-regex": "2.1.1"
       }
     },
+    "has-binary": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/has-binary/-/has-binary-0.1.7.tgz",
+      "integrity": "sha1-aOYesWIQyVRaClzOBqhzkS/h5ow=",
+      "dev": true,
+      "requires": {
+        "isarray": "0.0.1"
+      }
+    },
     "has-binary2": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/has-binary2/-/has-binary2-1.0.2.tgz",
@@ -6393,6 +6412,12 @@
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
       "dev": true
     },
+    "json3": {
+      "version": "3.2.6",
+      "resolved": "https://registry.npmjs.org/json3/-/json3-3.2.6.tgz",
+      "integrity": "sha1-9u/JPAagTemuxTBT3yVZuxniA4s=",
+      "dev": true
+    },
     "jsonfile": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
@@ -6665,6 +6690,424 @@
         }
       }
     },
+    "karma-benchmark": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/karma-benchmark/-/karma-benchmark-0.7.1.tgz",
+      "integrity": "sha1-IeIAcbczSFMgj3xZTxwf/ibozlo=",
+      "dev": true,
+      "requires": {
+        "benchmark": "2.1.3",
+        "karma": "1.3.0",
+        "lodash": "4.17.4",
+        "platform": "1.3.3"
+      },
+      "dependencies": {
+        "accepts": {
+          "version": "1.1.4",
+          "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.1.4.tgz",
+          "integrity": "sha1-1xyW99QdD+2iw4zRToonwEFY30o=",
+          "dev": true,
+          "requires": {
+            "mime-types": "2.0.14",
+            "negotiator": "0.4.9"
+          }
+        },
+        "after": {
+          "version": "0.8.1",
+          "resolved": "https://registry.npmjs.org/after/-/after-0.8.1.tgz",
+          "integrity": "sha1-q11PuIP1loFtNRX495HAr0ht1ic=",
+          "dev": true
+        },
+        "arraybuffer.slice": {
+          "version": "0.0.6",
+          "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz",
+          "integrity": "sha1-8zshWfBTKj8xB6JywMz70a0peco=",
+          "dev": true
+        },
+        "base64-arraybuffer": {
+          "version": "0.1.2",
+          "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.2.tgz",
+          "integrity": "sha1-R030qfLaJOBd8xWMOx2zw81GoVQ=",
+          "dev": true
+        },
+        "base64id": {
+          "version": "0.1.0",
+          "resolved": "https://registry.npmjs.org/base64id/-/base64id-0.1.0.tgz",
+          "integrity": "sha1-As4P3u4M709ACA4ec+g08LG/zj8=",
+          "dev": true
+        },
+        "colors": {
+          "version": "1.1.2",
+          "resolved": "https://registry.npmjs.org/colors/-/colors-1.1.2.tgz",
+          "integrity": "sha1-FopHAXVran9RoSzgyXv6KMCE7WM=",
+          "dev": true
+        },
+        "component-emitter": {
+          "version": "1.1.2",
+          "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.1.2.tgz",
+          "integrity": "sha1-KWWU8nU9qmOZbSrwjRWpURbJrsM=",
+          "dev": true
+        },
+        "debug": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
+          "dev": true,
+          "requires": {
+            "ms": "0.7.1"
+          }
+        },
+        "engine.io": {
+          "version": "1.6.10",
+          "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-1.6.10.tgz",
+          "integrity": "sha1-+H2E4b0h0aLsf43u8MYgVKzfsno=",
+          "dev": true,
+          "requires": {
+            "accepts": "1.1.4",
+            "base64id": "0.1.0",
+            "debug": "2.2.0",
+            "engine.io-parser": "1.2.4",
+            "ws": "1.0.1"
+          }
+        },
+        "engine.io-client": {
+          "version": "1.6.9",
+          "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-1.6.9.tgz",
+          "integrity": "sha1-HWrUgEilCDyVCWlDsp0279shJAE=",
+          "dev": true,
+          "requires": {
+            "component-emitter": "1.1.2",
+            "component-inherit": "0.0.3",
+            "debug": "2.2.0",
+            "engine.io-parser": "1.2.4",
+            "has-cors": "1.1.0",
+            "indexof": "0.0.1",
+            "parsejson": "0.0.1",
+            "parseqs": "0.0.2",
+            "parseuri": "0.0.4",
+            "ws": "1.0.1",
+            "xmlhttprequest-ssl": "1.5.1",
+            "yeast": "0.1.2"
+          }
+        },
+        "engine.io-parser": {
+          "version": "1.2.4",
+          "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-1.2.4.tgz",
+          "integrity": "sha1-4Il7C/FOeS1M0qWVBVORnFaUjEI=",
+          "dev": true,
+          "requires": {
+            "after": "0.8.1",
+            "arraybuffer.slice": "0.0.6",
+            "base64-arraybuffer": "0.1.2",
+            "blob": "0.0.4",
+            "has-binary": "0.1.6",
+            "utf8": "2.1.0"
+          },
+          "dependencies": {
+            "has-binary": {
+              "version": "0.1.6",
+              "resolved": "https://registry.npmjs.org/has-binary/-/has-binary-0.1.6.tgz",
+              "integrity": "sha1-JTJvOc+k9hath4eJTjryz7x7bhA=",
+              "dev": true,
+              "requires": {
+                "isarray": "0.0.1"
+              }
+            }
+          }
+        },
+        "karma": {
+          "version": "1.3.0",
+          "resolved": "https://registry.npmjs.org/karma/-/karma-1.3.0.tgz",
+          "integrity": "sha1-srlOj0mfrdAGnVT5rvSk1I7FzB8=",
+          "dev": true,
+          "requires": {
+            "bluebird": "3.5.1",
+            "body-parser": "1.18.2",
+            "chokidar": "1.7.0",
+            "colors": "1.1.2",
+            "combine-lists": "1.0.1",
+            "connect": "3.6.6",
+            "core-js": "2.5.3",
+            "di": "0.0.1",
+            "dom-serialize": "2.2.1",
+            "expand-braces": "0.1.2",
+            "glob": "7.1.2",
+            "graceful-fs": "4.1.11",
+            "http-proxy": "1.16.2",
+            "isbinaryfile": "3.0.2",
+            "lodash": "3.10.1",
+            "log4js": "0.6.38",
+            "mime": "1.6.0",
+            "minimatch": "3.0.4",
+            "optimist": "0.6.1",
+            "qjobs": "1.2.0",
+            "range-parser": "1.2.0",
+            "rimraf": "2.6.2",
+            "socket.io": "1.4.7",
+            "source-map": "0.5.7",
+            "tmp": "0.0.28",
+            "useragent": "2.3.0"
+          },
+          "dependencies": {
+            "lodash": {
+              "version": "3.10.1",
+              "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+              "integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y=",
+              "dev": true
+            }
+          }
+        },
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        },
+        "log4js": {
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+          "dev": true,
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+          "dev": true,
+          "requires": {
+            "options": "0.0.6",
+            "ultron": "1.0.2"
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+        "xmlhttprequest-ssl": {
+          "version": "1.5.1",
+          "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.1.tgz",
+          "integrity": "sha1-O3dB/qSoZnWXbpCNKW1ERZYfqmc=",
+          "dev": true
+        }
+      }
+    },
+    "karma-benchmark-json-reporter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/karma-benchmark-json-reporter/-/karma-benchmark-json-reporter-1.0.1.tgz",
+      "integrity": "sha512-mbt+5HJFN2nhfBIeT0x9yoq07T1Qx4Dlmqlc92TBYY73UNHty/9npG/wd9Er7M1baCrwG8RtO4DBeSJRQKeSeQ==",
+      "dev": true
+    },
+    "karma-benchmarkjs-reporter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/karma-benchmarkjs-reporter/-/karma-benchmarkjs-reporter-1.0.0.tgz",
+      "integrity": "sha1-2Y0AMpQsbil0bZr+/C2rFinttk4=",
+      "dev": true,
+      "requires": {
+        "chalk": "1.1.3",
+        "lodash": "4.17.5",
+        "strip-ansi": "3.0.1"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "2.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+          "dev": true
+        },
+        "chalk": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "2.2.1",
+            "escape-string-regexp": "1.0.5",
+            "has-ansi": "2.0.0",
+            "strip-ansi": "3.0.1",
+            "supports-color": "2.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+          "dev": true
+        }
+      }
+    },
     "karma-browserify": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/karma-browserify/-/karma-browserify-5.2.0.tgz",
@@ -8657,6 +9100,12 @@
         "wordwrap": "1.0.0"
       }
     },
+    "options": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/options/-/options-0.0.6.tgz",
+      "integrity": "sha1-7CLTEoBrtT5zF3Pnza788cZDEo8=",
+      "dev": true
+    },
     "ora": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/ora/-/ora-1.4.0.tgz",
@@ -8883,6 +9332,15 @@
       "integrity": "sha512-VrZ7eOd3T1Fk4XWNXMgiGBK/z0MG48BWG2uQNU4I72fkQuKUTZpl+u9k+CxEG0twMVzSmXEEz12z5Fnw1jIQFA==",
       "dev": true
     },
+    "parsejson": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/parsejson/-/parsejson-0.0.1.tgz",
+      "integrity": "sha1-mxDGwNglq1ieaFFTgm3go7oni8w=",
+      "dev": true,
+      "requires": {
+        "better-assert": "1.0.2"
+      }
+    },
     "parseqs": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.5.tgz",
@@ -9068,6 +9526,12 @@
         "uniq": "1.0.1"
       }
     },
+    "platform": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/platform/-/platform-1.3.3.tgz",
+      "integrity": "sha1-ZGx3ARiZhwtqCQPnXpl+jlHadGE=",
+      "dev": true
+    },
     "plur": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/plur/-/plur-2.1.2.tgz",
@@ -11968,6 +12432,12 @@
         "tmp": "0.0.33"
       }
     },
+    "utf8": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.0.tgz",
+      "integrity": "sha1-DP7FyAUtRKI+OqqQgQToB1+V39U=",
+      "dev": true
+    },
     "util": {
       "version": "0.10.3",
       "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
diff --git a/package.json b/package.json
index ad339fda044..c790854628a 100644
--- a/package.json
+++ b/package.json
@@ -44,6 +44,7 @@
     "start-image_viewer": "node devtools/image_viewer/server.js",
     "start": "npm run start-test_dashboard",
     "baseline": "node tasks/baseline.js",
+    "bench": "karma start bench/karma.conf.js",
     "preversion": "check-node-version --node 8 --npm 5 && npm-link-check && npm ls --prod",
     "version": "npm run build && git add -A dist src build",
     "postversion": "node -e \"console.log('Version bumped and committed. If ok, run: git push && git push --tags')\""
@@ -131,6 +132,9 @@
     "jsdom": "^11.6.2",
     "karma": "^2.0.0",
     "karma-browserify": "^5.2.0",
+    "karma-benchmark": "^0.7.1",
+    "karma-benchmark-json-reporter": "^1.0.1",
+    "karma-benchmarkjs-reporter": "^1.0.0",
     "karma-chrome-launcher": "^2.0.0",
     "karma-coverage": "^1.0.0",
     "karma-firefox-launcher": "^1.0.1",