diff --git a/docs/jsdoc-config.js b/docs/jsdoc-config.js
new file mode 100644
index 00000000..890f061f
--- /dev/null
+++ b/docs/jsdoc-config.js
@@ -0,0 +1,83 @@
+/* eslint-env node */
+'use strict';
+
+module.exports = {
+  plugins: ['plugins/markdown'],
+  markdown: {
+    // "The highlighter function should escape the code block's contents and wrap them in <pre><code> tags"
+    highlight (code, language) {
+      function ret () {
+        // Default:
+        return '<pre><code>' + code + ' in this language: ' + language + '</code></pre>';
+      }
+      if (language !== 'js') { // E.g., we have one URL in some tutorial Markdown
+        return ret();
+      }
+
+      // Programmatic ESLint API: https://eslint.org/docs/developer-guide/nodejs-api
+      const {CLIEngine} = require('eslint');
+      const cli = new CLIEngine({
+        useEslintrc: true,
+        rules: {
+          'no-undef': 0, // Many variables in examples will be undefined
+          'padded-blocks': 0 // Can look nicer
+        }
+      });
+
+      // Undo escaping done by node_modules/jsdoc/lib/jsdoc/util/markdown.js
+      code = code
+        .replace(/\s+$/, '')
+        .replace(/&#39;/g, "'")
+        .replace(/(https?):\\\/\\\//g, '$1://')
+        .replace(/\{@[^}\r\n]+\}/g, function (wholeMatch) {
+          return wholeMatch.replace(/&quot;/g, '"');
+        });
+
+      // lint the supplied text and optionally set
+      // a filename that is displayed in the report
+      const report = cli.executeOnText(code + '\n');
+      if (!report.errorCount && !report.warningCount) {
+        return ret();
+      }
+
+      // Although we don't get the file, at least we can report the source code
+      const {messages} = report.results[0];
+      messages.forEach(({message, line, column, severity, ruleId}) => {
+        console.log(`${ruleId}: ${message} (Severity: ${severity}; ${line}:${column})`);
+      });
+      console.log('\n' + code);
+
+      return ret();
+    },
+    tags: []
+  },
+  recurseDepth: 10,
+  source: {
+    exclude: [
+      'node_modules',
+      'dist',
+      'firefox-extension',
+      'opera-widget',
+      'screencasts',
+      'test'
+    ],
+    excludePattern: 'svgedit-config-*|build-html.js|rollup*|external/babel-polyfill|extensions/mathjax|imagelib/jquery.min.js|jspdf/jspdf.min.js|jspdf/underscore-min.js|jquery-ui|jquery.min.js|jquerybbq|js-hotkeys'
+  },
+  sourceType: 'module',
+  tags: {
+    allowUnknownTags: false
+  },
+  templates: {
+    cleverLinks: true,
+    monospaceLinks: false,
+    default: {
+      layoutFile: 'docs/layout.tmpl'
+    }
+  },
+  opts: {
+    recurse: true,
+    verbose: true,
+    destination: 'docs/jsdoc',
+    tutorials: 'docs/tutorials'
+  }
+};
diff --git a/docs/jsdoc-config.json b/docs/jsdoc-config.json
deleted file mode 100644
index 4b2bbd9a..00000000
--- a/docs/jsdoc-config.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "plugins": ["plugins/markdown"],
-  "markdown": {
-    "tags": []
-  },
-  "recurseDepth": 10,
-  "source": {
-    "exclude": [
-      "node_modules",
-      "dist",
-      "firefox-extension",
-      "opera-widget",
-      "screencasts",
-      "test"
-    ],
-    "excludePattern": "svgedit-config-*|build-html.js|rollup*|external/babel-polyfill|extensions/mathjax|imagelib/jquery.min.js|jspdf/jspdf.min.js|jspdf/underscore-min.js|jquery-ui|jquery.min.js|jquerybbq|js-hotkeys"
-  },
-  "sourceType": "module",
-  "tags": {
-    "allowUnknownTags": false
-  },
-  "templates": {
-    "cleverLinks": true,
-    "monospaceLinks": false,
-    "default": {
-      "layoutFile": "docs/layout.tmpl"
-    }
-  },
-  "opts":{
-    "recurse": true,
-    "verbose": true,
-    "destination": "docs/jsdoc",
-    "tutorials": "docs/tutorials"
-  }
-}
diff --git a/docs/tutorials/ConfigOptions.md b/docs/tutorials/ConfigOptions.md
index d89a865a..61d64124 100644
--- a/docs/tutorials/ConfigOptions.md
+++ b/docs/tutorials/ConfigOptions.md
@@ -136,13 +136,13 @@ As a URL parameter, one can pre-load an SVG file in the following manner:
 
 ```js
 // Data URI
-'?source=' + encodeURIComponent('data:image/svg+xml;utf8,' + /*...*/);
+location.href += '?source=' + encodeURIComponent('data:image/svg+xml;utf8,' + svgText);
 
 // Data URI (base 64):
-'?source=' + encodeURIComponent('data:image/svg+xml;base64,' + /* ... */); // data%3Aimage%2Fsvg%2Bxml%3Bbase64%2C ...
+location.href += '?source=' + encodeURIComponent('data:image/svg+xml;base64,' + svgTextAsBase64); // data%3Aimage%2Fsvg%2Bxml%3Bbase64%2C ...
 
 // Local URL:
-'?url=' + encodeURIComponent('images/logo.svg'); // images%2Flogo.svg
+location.href += '?url=' + encodeURIComponent('images/logo.svg'); // images%2Flogo.svg
 ```
 
 **Note:** There is currently a bug that prevents data URIs ending with
diff --git a/docs/tutorials/Events.md b/docs/tutorials/Events.md
index 590dc92e..4536daf8 100644
--- a/docs/tutorials/Events.md
+++ b/docs/tutorials/Events.md
@@ -8,9 +8,9 @@ the SVG file differently:
 ### Example
 ```js
 svgEditor.setCustomHandlers({
- save (win, data) {
-  // Save svg
- }
+  save (win, data) {
+    // Save svg
+  }
 });
 ```
 
diff --git a/docs/tutorials/ExtensionDocs.md b/docs/tutorials/ExtensionDocs.md
index 072c9c83..9e5929c8 100644
--- a/docs/tutorials/ExtensionDocs.md
+++ b/docs/tutorials/ExtensionDocs.md
@@ -76,14 +76,14 @@ export default {
   name: 'helloworld',
   init () {
     return {
-        svgicons: 'extensions/helloworld-icon.xml',
-        buttons: [{...}],
-        mouseDown () {
-            ...
-        },
-        mouseUp (opts) {
-            ...
-        }
+      svgicons: 'extensions/helloworld-icon.xml',
+      buttons: [{ /* ... */ }],
+      mouseDown () {
+        // ...
+      },
+      mouseUp (opts) {
+        // ...
+      }
     };
   }
 };
@@ -149,6 +149,7 @@ const localeStrings = await importSetGlobalDefault(url, {
 });
 
 // Use `localeStrings`
+console.log(localeStrings);
 
 })();
 ```
diff --git a/package-lock.json b/package-lock.json
index 08351d18..7a0ad824 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1131,7 +1131,7 @@
     },
     "async": {
       "version": "0.2.6",
-      "resolved": "http://registry.npmjs.org/async/-/async-0.2.6.tgz",
+      "resolved": "https://registry.npmjs.org/async/-/async-0.2.6.tgz",
       "integrity": "sha1-rT83PZJJrjJIgVZVgryQ4VKrvWg=",
       "dev": true
     },
@@ -1883,7 +1883,7 @@
         },
         "regjsgen": {
           "version": "0.2.0",
-          "resolved": "http://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
           "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
           "dev": true
         },
@@ -3400,6 +3400,12 @@
       "integrity": "sha1-pls+QtC3HPxYXrd0+ZQ8jZuRsMI=",
       "dev": true
     },
+    "entities": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
+      "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
+      "dev": true
+    },
     "errno": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
@@ -5922,9 +5928,8 @@
       "dev": true
     },
     "jsdoc": {
-      "version": "3.5.5",
-      "resolved": "https://registry.npmjs.org/jsdoc/-/jsdoc-3.5.5.tgz",
-      "integrity": "sha512-6PxB65TAU4WO0Wzyr/4/YhlGovXl0EVYfpKbpSroSj0qBxT4/xod/l40Opkm38dRHRdQgdeY836M0uVnJQG7kg==",
+      "version": "git+https://github.com/jsdoc3/jsdoc.git#b21427343c7294bbf1f14c718a390f3e955e37cb",
+      "from": "git+https://github.com/jsdoc3/jsdoc.git#b21427343c7294bbf1f14c718a390f3e955e37cb",
       "dev": true,
       "requires": {
         "babylon": "7.0.0-beta.19",
@@ -5933,6 +5938,8 @@
         "escape-string-regexp": "~1.0.5",
         "js2xmlparser": "~3.0.0",
         "klaw": "~2.0.0",
+        "markdown-it": "~8.3.1",
+        "markdown-it-named-headers": "~0.0.4",
         "marked": "~0.3.6",
         "mkdirp": "~0.5.1",
         "requizzle": "~0.2.1",
@@ -6295,6 +6302,15 @@
         "type-check": "~0.3.2"
       }
     },
+    "linkify-it": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.0.3.tgz",
+      "integrity": "sha1-2UpGSPmxwXnWT6lykSaL22zpQ08=",
+      "dev": true,
+      "requires": {
+        "uc.micro": "^1.0.1"
+      }
+    },
     "linux-platform-info": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/linux-platform-info/-/linux-platform-info-0.0.3.tgz",
@@ -6519,6 +6535,28 @@
       "integrity": "sha512-WWC0ZuMzCyDHYCasEGs4IPvLyTGftYwh6wIEOULOF0HXcqZlhwRzrK0w2VUlxWA98xnvb/jszw4ZSkJ6ADpM6Q==",
       "dev": true
     },
+    "markdown-it": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-8.3.2.tgz",
+      "integrity": "sha512-4J92IhJq1kGoyXddwzzfjr9cEKGexBfFsZooKYMhMLLlWa4+dlSPDUUP7y+xQOCebIj61aLmKlowg//YcdPP1w==",
+      "dev": true,
+      "requires": {
+        "argparse": "^1.0.7",
+        "entities": "~1.1.1",
+        "linkify-it": "^2.0.0",
+        "mdurl": "^1.0.1",
+        "uc.micro": "^1.0.3"
+      }
+    },
+    "markdown-it-named-headers": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/markdown-it-named-headers/-/markdown-it-named-headers-0.0.4.tgz",
+      "integrity": "sha1-gu/CgyQkCmsed7mq5QF3HV81HB8=",
+      "dev": true,
+      "requires": {
+        "string": "^3.0.1"
+      }
+    },
     "markdown-table": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/markdown-table/-/markdown-table-1.1.2.tgz",
@@ -6584,6 +6622,12 @@
         "extend": "3.0.2"
       }
     },
+    "mdurl": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/mdurl/-/mdurl-1.0.1.tgz",
+      "integrity": "sha1-/oWy7HWlkDfyrf7BAP1sYBdhFS4=",
+      "dev": true
+    },
     "meow": {
       "version": "3.7.0",
       "resolved": "http://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
@@ -8882,6 +8926,12 @@
       "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=",
       "dev": true
     },
+    "string": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/string/-/string-3.3.3.tgz",
+      "integrity": "sha1-XqIRzZLSKOGEKUmQpsyXs2anfLA=",
+      "dev": true
+    },
     "string-range": {
       "version": "1.2.2",
       "resolved": "http://registry.npmjs.org/string-range/-/string-range-1.2.2.tgz",
@@ -9190,7 +9240,7 @@
               "dependencies": {
                 "pify": {
                   "version": "2.3.0",
-                  "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+                  "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
                   "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
                   "dev": true
                 }
@@ -9378,7 +9428,7 @@
         },
         "core-js": {
           "version": "1.2.7",
-          "resolved": "http://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
           "integrity": "sha1-ZSKUwUZR2yj6k70tX/KYOk8IxjY=",
           "dev": true
         }
@@ -9505,7 +9555,7 @@
         },
         "core-js": {
           "version": "1.2.7",
-          "resolved": "http://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
           "integrity": "sha1-ZSKUwUZR2yj6k70tX/KYOk8IxjY=",
           "dev": true
         },
@@ -9534,37 +9584,37 @@
     },
     "testcafe-reporter-json": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/testcafe-reporter-json/-/testcafe-reporter-json-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/testcafe-reporter-json/-/testcafe-reporter-json-2.1.0.tgz",
       "integrity": "sha1-gLm1pt/y7h3h+R4mcHBsFHLmQAY=",
       "dev": true
     },
     "testcafe-reporter-list": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/testcafe-reporter-list/-/testcafe-reporter-list-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/testcafe-reporter-list/-/testcafe-reporter-list-2.1.0.tgz",
       "integrity": "sha1-n6ifcbl9Pf5ktDAtXiJ97mmuxrk=",
       "dev": true
     },
     "testcafe-reporter-minimal": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/testcafe-reporter-minimal/-/testcafe-reporter-minimal-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/testcafe-reporter-minimal/-/testcafe-reporter-minimal-2.1.0.tgz",
       "integrity": "sha1-Z28DVHY0FDxurzq1KGgnOkvr9CE=",
       "dev": true
     },
     "testcafe-reporter-spec": {
       "version": "2.1.1",
-      "resolved": "http://registry.npmjs.org/testcafe-reporter-spec/-/testcafe-reporter-spec-2.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/testcafe-reporter-spec/-/testcafe-reporter-spec-2.1.1.tgz",
       "integrity": "sha1-gVb87Q9RMkhlWa1WC8gGdkaSdew=",
       "dev": true
     },
     "testcafe-reporter-xunit": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/testcafe-reporter-xunit/-/testcafe-reporter-xunit-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/testcafe-reporter-xunit/-/testcafe-reporter-xunit-2.1.0.tgz",
       "integrity": "sha1-5tZsVyzhWvJmcGrw/WELKoQd1EM=",
       "dev": true
     },
     "text-encoding": {
       "version": "0.6.4",
-      "resolved": "http://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",
+      "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",
       "integrity": "sha1-45mpgiV6J22uQou5KEXLcb3CbRk=",
       "dev": true
     },
@@ -9815,6 +9865,12 @@
       "integrity": "sha512-Gr4p6nFNaoufRIY4NMdpQRNmgxVIGMs4Fcu/ujdYk3nAZqk7supzBE9idmvfZIlH/Cuj//dvi+019qEue9lV0w==",
       "dev": true
     },
+    "uc.micro": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.5.tgz",
+      "integrity": "sha512-JoLI4g5zv5qNyT09f4YAvEZIIV1oOjqnewYg5D38dkQljIzpPT296dbIGvKro3digYI1bkb7W6EP1y4uDlmzLg==",
+      "dev": true
+    },
     "ultron": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
diff --git a/package.json b/package.json
index 6695b489..8facc69e 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "build-config": "rollup -c rollup-config.config.js",
     "types-doc": "node jsdoc-check-overly-generic-types.js",
     "open-es-allext": "opn http://localhost:8000/editor/svg-editor-es.html?extensions=ext-arrows.js,ext-closepath.js,ext-foreignobject.js,ext-helloworld.js,ext-mathjax.js,ext-php_savefile.js,ext-server_moinsave.js,ext-server_opensave.js,ext-webappfind.js,ext-xdomain-messaging.js",
-    "build-doc": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.json editor",
+    "build-doc": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
     "build-html": "node build-html.js",
     "compress-images": "imageoptim 'chrome-app/*.png' && imageoptim 'editor/extensions/*.png' && imageoptim 'editor/spinbtn/*.png' && imageoptim 'editor/jgraduate/images/*.{png,gif}' && imageoptim 'editor/images/*.png'",
     "copy-deps": "cp node_modules/load-stylesheets/dist/index-es.js editor/external/load-stylesheets/index-es.js && cp node_modules/@babel/polyfill/dist/polyfill.min.js editor/external/@babel/polyfill/polyfill.min.js && cp node_modules/@babel/polyfill/dist/polyfill.js editor/external/@babel/polyfill/polyfill.js && cp node_modules/jamilih/dist/jml-es.js editor/external/jamilih/jml-es.js && cp node_modules/query-result/esm/index.js editor/external/query-result/esm/index.js && cp node_modules/qr-manipulation/dist/index-es.js editor/external/qr-manipulation/dist/index-es.js",
@@ -91,7 +91,7 @@
     "find-in-files": "^0.5.0",
     "imageoptim-cli": "^2.0.3",
     "jamilih": "^0.43.0",
-    "jsdoc": "^3.5.5",
+    "jsdoc": "https://github.com/jsdoc3/jsdoc#b21427343c7294bbf1f14c718a390f3e955e37cb",
     "load-stylesheets": "^0.7.0",
     "node-static": "^0.7.11",
     "opn-cli": "^3.1.0",