diff --git a/package-lock.json b/package-lock.json
index d401c91f..8a1d19bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "stackedit",
-  "version": "5.7.0",
+  "version": "5.7.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,6 +14,11 @@
         "through": "2.3.8"
       }
     },
+    "abab": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
+      "integrity": "sha1-X6rZwsB/YN12dw9xzwJbYqY8/U4="
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -32,8 +37,7 @@
     "acorn": {
       "version": "5.3.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.3.0.tgz",
-      "integrity": "sha512-Yej+zOJ1Dm/IMZzzj78OntP/r3zHEaKcyNoU2lAaxPtrseM6rF0xwqoz5Q5ysAiED9hTjI2hgtvLXitlCN1/Ug==",
-      "dev": true
+      "integrity": "sha512-Yej+zOJ1Dm/IMZzzj78OntP/r3zHEaKcyNoU2lAaxPtrseM6rF0xwqoz5Q5ysAiED9hTjI2hgtvLXitlCN1/Ug=="
     },
     "acorn-dynamic-import": {
       "version": "2.0.2",
@@ -52,6 +56,14 @@
         }
       }
     },
+    "acorn-globals": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-4.1.0.tgz",
+      "integrity": "sha512-KjZwU26uG3u6eZcfGbTULzFcsoz6pegNKtHPksZPOUsiKo5bUmiBPa38FuHZ/Eun+XYh/JCCkS9AS3Lu4McQOQ==",
+      "requires": {
+        "acorn": "5.3.0"
+      }
+    },
     "acorn-jsx": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
@@ -224,6 +236,11 @@
       "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8=",
       "dev": true
     },
+    "array-equal": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/array-equal/-/array-equal-1.0.0.tgz",
+      "integrity": "sha1-jCpe8kcv2ep0KwTHenUJO6J1fJM="
+    },
     "array-filter": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/array-filter/-/array-filter-0.0.1.tgz",
@@ -349,8 +366,7 @@
     "async-limiter": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
-      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==",
-      "dev": true
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -1381,6 +1397,11 @@
       "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=",
       "dev": true
     },
+    "browser-process-hrtime": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/browser-process-hrtime/-/browser-process-hrtime-0.1.2.tgz",
+      "integrity": "sha1-Ql1opY00R/AqBKqJQYf86K+Le44="
+    },
     "browserify-aes": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.1.1.tgz",
@@ -2320,6 +2341,11 @@
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
       "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
     },
+    "content-type-parser": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/content-type-parser/-/content-type-parser-1.0.2.tgz",
+      "integrity": "sha512-lM4l4CnMEwOLHAHr/P6MEZwZFPJFtAAKgL6pogbXmVZggIqXhdB6RbBtPOTsw2FcXwYhehRGERJmRrjOiIB8pQ=="
+    },
     "convert-source-map": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.5.1.tgz",
@@ -2763,6 +2789,19 @@
         }
       }
     },
+    "cssom": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.2.tgz",
+      "integrity": "sha1-uANhcMefB6kP8vFuIihAJ6JDhIs="
+    },
+    "cssstyle": {
+      "version": "0.2.37",
+      "resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-0.2.37.tgz",
+      "integrity": "sha1-VBCXI0yyUTyDzu06zdwn/yeYfVQ=",
+      "requires": {
+        "cssom": "0.3.2"
+      }
+    },
     "currently-unhandled": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
@@ -2866,8 +2905,7 @@
     "deep-is": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
-      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
-      "dev": true
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ="
     },
     "defaults": {
       "version": "1.0.3",
@@ -3131,6 +3169,14 @@
       "integrity": "sha1-sXrtguirWeUt2cGbF1bg/BhyBMI=",
       "dev": true
     },
+    "domexception": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/domexception/-/domexception-1.0.1.tgz",
+      "integrity": "sha512-raigMkn7CJNNo6Ihro1fzG7wr3fHuYVytzquZKX5n0yizGsTcYgzdIUwj1X9pK0VvjeihV+XiclP+DjwbsSKug==",
+      "requires": {
+        "webidl-conversions": "4.0.2"
+      }
+    },
     "domhandler": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.4.1.tgz",
@@ -3427,6 +3473,31 @@
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
       "dev": true
     },
+    "escodegen": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.9.0.tgz",
+      "integrity": "sha512-v0MYvNQ32bzwoG2OSFzWAkuahDQHK92JBN0pTAALJ4RIxEZe766QJPDR8Hqy7XNUy5K3fnVL76OqYAdc4TZEIw==",
+      "requires": {
+        "esprima": "3.1.3",
+        "estraverse": "4.2.0",
+        "esutils": "2.0.2",
+        "optionator": "0.8.2",
+        "source-map": "0.5.7"
+      },
+      "dependencies": {
+        "esprima": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-3.1.3.tgz",
+          "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM="
+        },
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "optional": true
+        }
+      }
+    },
     "escope": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/escope/-/escope-3.6.0.tgz",
@@ -3658,14 +3729,12 @@
     "estraverse": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.2.0.tgz",
-      "integrity": "sha1-De4/7TH81GlhjOc0IJn8GvoL2xM=",
-      "dev": true
+      "integrity": "sha1-De4/7TH81GlhjOc0IJn8GvoL2xM="
     },
     "esutils": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
-      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
-      "dev": true
+      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs="
     },
     "etag": {
       "version": "1.8.1",
@@ -3948,8 +4017,7 @@
     "fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
-      "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
-      "dev": true
+      "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc="
     },
     "fastparse": {
       "version": "1.1.1",
@@ -6419,6 +6487,14 @@
       "integrity": "sha1-ZouTd26q5V696POtRkswekljYl4=",
       "dev": true
     },
+    "html-encoding-sniffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/html-encoding-sniffer/-/html-encoding-sniffer-1.0.2.tgz",
+      "integrity": "sha512-71lZziiDnsuabfdYiUeWdCVyKuqwWi23L8YeIgV9jSSZHCtb6wB1BKWooH7L3tn4/FuZJMVWyNaIDr4RGmaSYw==",
+      "requires": {
+        "whatwg-encoding": "1.0.3"
+      }
+    },
     "html-entities": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/html-entities/-/html-entities-1.2.1.tgz",
@@ -7250,6 +7326,46 @@
       "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
       "optional": true
     },
+    "jsdom": {
+      "version": "11.6.2",
+      "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-11.6.2.tgz",
+      "integrity": "sha512-pAeZhpbSlUp5yQcS6cBQJwkbzmv4tWFaYxHbFVSxzXefqjvtRA851Z5N2P+TguVG9YeUDcgb8pdeVQRJh0XR3Q==",
+      "requires": {
+        "abab": "1.0.4",
+        "acorn": "5.3.0",
+        "acorn-globals": "4.1.0",
+        "array-equal": "1.0.0",
+        "browser-process-hrtime": "0.1.2",
+        "content-type-parser": "1.0.2",
+        "cssom": "0.3.2",
+        "cssstyle": "0.2.37",
+        "domexception": "1.0.1",
+        "escodegen": "1.9.0",
+        "html-encoding-sniffer": "1.0.2",
+        "left-pad": "1.2.0",
+        "nwmatcher": "1.4.3",
+        "parse5": "4.0.0",
+        "pn": "1.1.0",
+        "request": "2.83.0",
+        "request-promise-native": "1.0.5",
+        "sax": "1.2.4",
+        "symbol-tree": "3.2.2",
+        "tough-cookie": "2.3.3",
+        "w3c-hr-time": "1.0.1",
+        "webidl-conversions": "4.0.2",
+        "whatwg-encoding": "1.0.3",
+        "whatwg-url": "6.4.0",
+        "ws": "4.0.0",
+        "xml-name-validator": "3.0.0"
+      },
+      "dependencies": {
+        "sax": {
+          "version": "1.2.4",
+          "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
+          "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw=="
+        }
+      }
+    },
     "jsesc": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
@@ -7487,11 +7603,15 @@
         }
       }
     },
+    "left-pad": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.2.0.tgz",
+      "integrity": "sha1-0wpzxrggHY99jnlWupYWCHpo4O4="
+    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
       "integrity": "sha1-OwmSTt+fCDwEkP3UwLxEIeBHZO4=",
-      "dev": true,
       "requires": {
         "prelude-ls": "1.1.2",
         "type-check": "0.3.2"
@@ -8991,6 +9111,11 @@
       "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
       "dev": true
     },
+    "nwmatcher": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/nwmatcher/-/nwmatcher-1.4.3.tgz",
+      "integrity": "sha512-IKdSTiDWCarf2JTS5e9e2+5tPZGdkRJ79XjYV0pzK8Q9BpsFyBq1RGKxzs7Q8UBushGw7m6TzVKz6fcY99iSWw=="
+    },
     "oauth-sign": {
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.8.2.tgz",
@@ -9272,7 +9397,6 @@
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
       "integrity": "sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=",
-      "dev": true,
       "requires": {
         "deep-is": "0.1.3",
         "fast-levenshtein": "2.0.6",
@@ -9285,8 +9409,7 @@
         "wordwrap": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
-          "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
-          "dev": true
+          "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
         }
       }
     },
@@ -9600,6 +9723,11 @@
         "pngjs": "3.3.1"
       }
     },
+    "parse5": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-4.0.0.tgz",
+      "integrity": "sha512-VrZ7eOd3T1Fk4XWNXMgiGBK/z0MG48BWG2uQNU4I72fkQuKUTZpl+u9k+CxEG0twMVzSmXEEz12z5Fnw1jIQFA=="
+    },
     "parseurl": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.2.tgz",
@@ -9796,8 +9924,7 @@
     "pn": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/pn/-/pn-1.1.0.tgz",
-      "integrity": "sha512-2qHaIQr2VLRFoxe2nASzsV6ef4yOOH+Fi9FBOVH6cqeSgUnoyySPZkxzLuzd+RYOQTRpROA0ztTMqxROKSb/nA==",
-      "dev": true
+      "integrity": "sha512-2qHaIQr2VLRFoxe2nASzsV6ef4yOOH+Fi9FBOVH6cqeSgUnoyySPZkxzLuzd+RYOQTRpROA0ztTMqxROKSb/nA=="
     },
     "pngjs": {
       "version": "3.3.1",
@@ -10496,8 +10623,7 @@
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
-      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
     },
     "prepend-http": {
       "version": "1.0.4",
@@ -11176,6 +11302,24 @@
         "throttleit": "1.0.0"
       }
     },
+    "request-promise-core": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/request-promise-core/-/request-promise-core-1.1.1.tgz",
+      "integrity": "sha1-Pu4AssWqgyOc+wTFcA2jb4HNCLY=",
+      "requires": {
+        "lodash": "4.17.4"
+      }
+    },
+    "request-promise-native": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/request-promise-native/-/request-promise-native-1.0.5.tgz",
+      "integrity": "sha1-UoF3D2jgyXGeUWP9P6tIIhX0/aU=",
+      "requires": {
+        "request-promise-core": "1.1.1",
+        "stealthy-require": "1.1.1",
+        "tough-cookie": "2.3.3"
+      }
+    },
     "require-directory": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -12841,6 +12985,11 @@
         "readable-stream": "2.3.3"
       }
     },
+    "stealthy-require": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/stealthy-require/-/stealthy-require-1.1.1.tgz",
+      "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks="
+    },
     "stream-browserify": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/stream-browserify/-/stream-browserify-2.0.1.tgz",
@@ -13344,6 +13493,11 @@
         }
       }
     },
+    "symbol-tree": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.2.tgz",
+      "integrity": "sha1-rifbOPZgp64uHDt9G8KQgZuFGeY="
+    },
     "sync-promise": {
       "version": "git+https://github.com/brettz9/sync-promise.git#25845a49a00aa2d2c985a5149b97c86a1fcdc75a"
     },
@@ -13748,6 +13902,14 @@
         "safe-buffer": "5.1.1"
       }
     },
+    "turndown": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/turndown/-/turndown-4.0.1.tgz",
+      "integrity": "sha512-xC83XzYm+yLuQWLBc87s63FLn4+ERdZOxDqlrlvKKWcyL9UFhwtR4hAqmFBKDUQyejRZWU9Fac4vMHomlFboyg==",
+      "requires": {
+        "jsdom": "11.6.2"
+      }
+    },
     "tweetnacl": {
       "version": "0.14.5",
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
@@ -13758,7 +13920,6 @@
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
-      "dev": true,
       "requires": {
         "prelude-ls": "1.1.2"
       }
@@ -13824,8 +13985,7 @@
     "ultron": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
-      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og==",
-      "dev": true
+      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
     },
     "unc-path-regex": {
       "version": "0.1.2",
@@ -14417,6 +14577,14 @@
       "resolved": "https://registry.npmjs.org/vuex/-/vuex-2.5.0.tgz",
       "integrity": "sha512-5oJPOJySBgSgSzoeO+gZB/BbN/XsapgIF6tz34UwJqnGZMQurzIO3B4KIBf862gfc9ya+oduY5sSkq+5/oOilQ=="
     },
+    "w3c-hr-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz",
+      "integrity": "sha1-gqwr/2PZUOqeMYmlimViX+3xkEU=",
+      "requires": {
+        "browser-process-hrtime": "0.1.2"
+      }
+    },
     "watchpack": {
       "version": "0.2.9",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-0.2.9.tgz",
@@ -14767,6 +14935,14 @@
         "tiny-queue": "0.2.1"
       }
     },
+    "whatwg-encoding": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.3.tgz",
+      "integrity": "sha512-jLBwwKUhi8WtBfsMQlL4bUUcT8sMkAtQinscJAe/M4KHCkHuUJAF6vuB0tueNIw4c8ziO6AkRmgY+jL3a0iiPw==",
+      "requires": {
+        "iconv-lite": "0.4.19"
+      }
+    },
     "whatwg-url": {
       "version": "6.4.0",
       "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-6.4.0.tgz",
@@ -14875,7 +15051,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/ws/-/ws-4.0.0.tgz",
       "integrity": "sha512-QYslsH44bH8O7/W2815u5DpnCpXWpEK44FmaHffNwgJI4JMaSZONgPBTOfrxJ29mXKbXak+LsJ2uAkDTYq2ptQ==",
-      "dev": true,
       "requires": {
         "async-limiter": "1.0.0",
         "safe-buffer": "5.1.1",
@@ -14900,6 +15075,11 @@
       "integrity": "sha1-ZGV4SKIP/F31g6Qq2KJ3tFErvE0=",
       "dev": true
     },
+    "xml-name-validator": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
+      "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw=="
+    },
     "xml-parse-from-string": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/xml-parse-from-string/-/xml-parse-from-string-1.0.1.tgz",
diff --git a/package.json b/package.json
index d995009d..449eed41 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "request": "^2.82.0",
     "serve-static": "^1.12.6",
     "tmp": "^0.0.33",
+    "turndown": "^4.0.1",
     "vue": "^2.3.3",
     "vuex": "^2.3.1"
   },
diff --git a/src/libs/cleditCore.js b/src/libs/cleditCore.js
index 23f3edaa..651fe0d1 100644
--- a/src/libs/cleditCore.js
+++ b/src/libs/cleditCore.js
@@ -1,4 +1,13 @@
-var DiffMatchPatch = require('diff-match-patch');
+var htmlSanitizer = require('./htmlSanitizer').default
+var DiffMatchPatch = require('diff-match-patch')
+var TurndownService = require('turndown/lib/turndown.browser.umd')
+
+var turndownService = new TurndownService({
+  headingStyle: 'atx',
+  hr: '----------',
+  bulletListMarker: '-',
+  codeBlockStyle: 'fenced',
+})
 
 function cledit(contentElt, scrollElt, windowParam) {
   scrollElt = scrollElt || contentElt
@@ -293,6 +302,18 @@ function cledit(contentElt, scrollElt, windowParam) {
     var clipboardData = evt.clipboardData
     if (clipboardData) {
       data = clipboardData.getData('text/plain')
+      try {
+        var html = clipboardData.getData('text/html');
+        if (html) {
+          var sanitizedHtml = htmlSanitizer.sanitizeHtml(html)
+            .replace(/ /g, ' '); // Replace non-breaking spaces with classic spaces
+          if (sanitizedHtml && sanitizedHtml.indexOf('<span class="token ') === -1) {
+            data = turndownService.turndown(sanitizedHtml);
+          }
+        }
+      } catch(e) {
+        // Ignore
+      }
     } else {
       clipboardData = editor.$window.clipboardData
       data = clipboardData && clipboardData.getData('Text')