diff --git a/package-lock.json b/package-lock.json
index 4c34fa6d4..e42a7093e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
         "@hackmd/imgur": "~0.5.0",
         "@hackmd/lz-string": "~1.4.4",
         "@hackmd/meta-marked": "~0.5.0",
-        "@hackmd/pandoc.js": "^0.1.9",
+        "@hackmd/pandoc.js": "^0.2.0",
         "@passport-next/passport-openid": "~1.0.0",
         "archiver": "~3.1.1",
         "async": "^3.2.4",
@@ -3110,9 +3110,9 @@
       }
     },
     "node_modules/@hackmd/pandoc.js": {
-      "version": "0.1.9",
-      "resolved": "https://registry.npmjs.org/@hackmd/pandoc.js/-/pandoc.js-0.1.9.tgz",
-      "integrity": "sha512-Z8i8vpFOP34v9rRm0vURTmDSqTW8JcXlI1TIiW3AKuJ3+nygTYc/wkaPATRLvusv1JkPrD+m4cIv4aPO9GkULw==",
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@hackmd/pandoc.js/-/pandoc.js-0.2.0.tgz",
+      "integrity": "sha512-UKd53fTzYJNXAuQD/S6NVcDdBjGDqAsZU9D8aM44SvU4vDYXy8wDjVTVXAlnTsByWzmRVgyRfriOpKnpvir8sw==",
       "hasInstallScript": true,
       "dependencies": {
         "extract-zip": "^1.6.7",
@@ -13742,26 +13742,34 @@
     },
     "node_modules/fsevents/node_modules/abbrev": {
       "version": "1.1.1",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/ansi-regex": {
       "version": "2.1.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/aproba": {
       "version": "1.2.0",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/are-we-there-yet": {
       "version": "1.1.5",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "delegates": "^1.0.0",
         "readable-stream": "^2.0.6"
@@ -13769,13 +13777,17 @@
     },
     "node_modules/fsevents/node_modules/balanced-match": {
       "version": "1.0.0",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/brace-expansion": {
       "version": "1.1.11",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -13783,57 +13795,75 @@
     },
     "node_modules/fsevents/node_modules/chownr": {
       "version": "1.1.3",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/code-point-at": {
       "version": "1.1.0",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/concat-map": {
       "version": "0.0.1",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/console-control-strings": {
       "version": "1.1.0",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/core-util-is": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/debug": {
       "version": "3.2.6",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "ms": "^2.1.1"
       }
     },
     "node_modules/fsevents/node_modules/deep-extend": {
       "version": "0.6.0",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=4.0.0"
       }
     },
     "node_modules/fsevents/node_modules/delegates": {
       "version": "1.0.0",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/detect-libc": {
       "version": "1.0.3",
+      "dev": true,
       "inBundle": true,
       "license": "Apache-2.0",
+      "optional": true,
       "bin": {
         "detect-libc": "bin/detect-libc.js"
       },
@@ -13843,21 +13873,27 @@
     },
     "node_modules/fsevents/node_modules/fs-minipass": {
       "version": "1.2.7",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "minipass": "^2.6.0"
       }
     },
     "node_modules/fsevents/node_modules/fs.realpath": {
       "version": "1.0.0",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/gauge": {
       "version": "2.7.4",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "aproba": "^1.0.3",
         "console-control-strings": "^1.0.0",
@@ -13871,8 +13907,10 @@
     },
     "node_modules/fsevents/node_modules/glob": {
       "version": "7.1.6",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "fs.realpath": "^1.0.0",
         "inflight": "^1.0.4",
@@ -13890,13 +13928,17 @@
     },
     "node_modules/fsevents/node_modules/has-unicode": {
       "version": "2.0.1",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/iconv-lite": {
       "version": "0.4.24",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "safer-buffer": ">= 2.1.2 < 3"
       },
@@ -13906,16 +13948,20 @@
     },
     "node_modules/fsevents/node_modules/ignore-walk": {
       "version": "3.0.3",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "minimatch": "^3.0.4"
       }
     },
     "node_modules/fsevents/node_modules/inflight": {
       "version": "1.0.6",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "once": "^1.3.0",
         "wrappy": "1"
@@ -13923,21 +13969,27 @@
     },
     "node_modules/fsevents/node_modules/inherits": {
       "version": "2.0.4",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/ini": {
       "version": "1.3.5",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "engines": {
         "node": "*"
       }
     },
     "node_modules/fsevents/node_modules/is-fullwidth-code-point": {
       "version": "1.0.0",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "number-is-nan": "^1.0.0"
       },
@@ -13947,13 +13999,17 @@
     },
     "node_modules/fsevents/node_modules/isarray": {
       "version": "1.0.0",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/minimatch": {
       "version": "3.0.4",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
@@ -13963,13 +14019,17 @@
     },
     "node_modules/fsevents/node_modules/minimist": {
       "version": "0.0.8",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/minipass": {
       "version": "2.9.0",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "safe-buffer": "^5.1.2",
         "yallist": "^3.0.0"
@@ -13977,16 +14037,20 @@
     },
     "node_modules/fsevents/node_modules/minizlib": {
       "version": "1.3.3",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "minipass": "^2.9.0"
       }
     },
     "node_modules/fsevents/node_modules/mkdirp": {
       "version": "0.5.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "minimist": "0.0.8"
       },
@@ -13996,13 +14060,17 @@
     },
     "node_modules/fsevents/node_modules/ms": {
       "version": "2.1.2",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/needle": {
       "version": "2.4.0",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "debug": "^3.2.6",
         "iconv-lite": "^0.4.4",
@@ -14017,8 +14085,10 @@
     },
     "node_modules/fsevents/node_modules/node-pre-gyp": {
       "version": "0.14.0",
+      "dev": true,
       "inBundle": true,
       "license": "BSD-3-Clause",
+      "optional": true,
       "dependencies": {
         "detect-libc": "^1.0.2",
         "mkdirp": "^0.5.1",
@@ -14037,8 +14107,10 @@
     },
     "node_modules/fsevents/node_modules/nopt": {
       "version": "4.0.1",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "abbrev": "1",
         "osenv": "^0.1.4"
@@ -14049,21 +14121,27 @@
     },
     "node_modules/fsevents/node_modules/npm-bundled": {
       "version": "1.1.1",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "npm-normalize-package-bin": "^1.0.1"
       }
     },
     "node_modules/fsevents/node_modules/npm-normalize-package-bin": {
       "version": "1.0.1",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/npm-packlist": {
       "version": "1.4.7",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "ignore-walk": "^3.0.1",
         "npm-bundled": "^1.0.1"
@@ -14071,8 +14149,10 @@
     },
     "node_modules/fsevents/node_modules/npmlog": {
       "version": "4.1.2",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "are-we-there-yet": "~1.1.2",
         "console-control-strings": "~1.1.0",
@@ -14082,48 +14162,60 @@
     },
     "node_modules/fsevents/node_modules/number-is-nan": {
       "version": "1.0.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/object-assign": {
       "version": "4.1.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/once": {
       "version": "1.4.0",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "wrappy": "1"
       }
     },
     "node_modules/fsevents/node_modules/os-homedir": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/os-tmpdir": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/osenv": {
       "version": "0.1.5",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "os-homedir": "^1.0.0",
         "os-tmpdir": "^1.0.0"
@@ -14131,21 +14223,27 @@
     },
     "node_modules/fsevents/node_modules/path-is-absolute": {
       "version": "1.0.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/process-nextick-args": {
       "version": "2.0.1",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/rc": {
       "version": "1.2.8",
+      "dev": true,
       "inBundle": true,
       "license": "(BSD-2-Clause OR MIT OR Apache-2.0)",
+      "optional": true,
       "dependencies": {
         "deep-extend": "^0.6.0",
         "ini": "~1.3.0",
@@ -14158,13 +14256,17 @@
     },
     "node_modules/fsevents/node_modules/rc/node_modules/minimist": {
       "version": "1.2.0",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/readable-stream": {
       "version": "2.3.6",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "core-util-is": "~1.0.0",
         "inherits": "~2.0.3",
@@ -14177,8 +14279,10 @@
     },
     "node_modules/fsevents/node_modules/rimraf": {
       "version": "2.7.1",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "glob": "^7.1.3"
       },
@@ -14188,49 +14292,65 @@
     },
     "node_modules/fsevents/node_modules/safe-buffer": {
       "version": "5.1.2",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/safer-buffer": {
       "version": "2.1.2",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/sax": {
       "version": "1.2.4",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/semver": {
       "version": "5.7.1",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "bin": {
         "semver": "bin/semver"
       }
     },
     "node_modules/fsevents/node_modules/set-blocking": {
       "version": "2.0.0",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/signal-exit": {
       "version": "3.0.2",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/string_decoder": {
       "version": "1.1.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "safe-buffer": "~5.1.0"
       }
     },
     "node_modules/fsevents/node_modules/string-width": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "code-point-at": "^1.0.0",
         "is-fullwidth-code-point": "^1.0.0",
@@ -14242,8 +14362,10 @@
     },
     "node_modules/fsevents/node_modules/strip-ansi": {
       "version": "3.0.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "ansi-regex": "^2.0.0"
       },
@@ -14253,16 +14375,20 @@
     },
     "node_modules/fsevents/node_modules/strip-json-comments": {
       "version": "2.0.1",
+      "dev": true,
       "inBundle": true,
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/fsevents/node_modules/tar": {
       "version": "4.4.13",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "chownr": "^1.1.1",
         "fs-minipass": "^1.2.5",
@@ -14278,26 +14404,34 @@
     },
     "node_modules/fsevents/node_modules/util-deprecate": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
-      "license": "MIT"
+      "license": "MIT",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/wide-align": {
       "version": "1.1.3",
+      "dev": true,
       "inBundle": true,
       "license": "ISC",
+      "optional": true,
       "dependencies": {
         "string-width": "^1.0.2 || 2"
       }
     },
     "node_modules/fsevents/node_modules/wrappy": {
       "version": "1.0.2",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/fsevents/node_modules/yallist": {
       "version": "3.1.1",
+      "dev": true,
       "inBundle": true,
-      "license": "ISC"
+      "license": "ISC",
+      "optional": true
     },
     "node_modules/function-bind": {
       "version": "1.1.2",
@@ -32679,9 +32813,9 @@
       }
     },
     "@hackmd/pandoc.js": {
-      "version": "0.1.9",
-      "resolved": "https://registry.npmjs.org/@hackmd/pandoc.js/-/pandoc.js-0.1.9.tgz",
-      "integrity": "sha512-Z8i8vpFOP34v9rRm0vURTmDSqTW8JcXlI1TIiW3AKuJ3+nygTYc/wkaPATRLvusv1JkPrD+m4cIv4aPO9GkULw==",
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@hackmd/pandoc.js/-/pandoc.js-0.2.0.tgz",
+      "integrity": "sha512-UKd53fTzYJNXAuQD/S6NVcDdBjGDqAsZU9D8aM44SvU4vDYXy8wDjVTVXAlnTsByWzmRVgyRfriOpKnpvir8sw==",
       "requires": {
         "extract-zip": "^1.6.7",
         "fs-extra": "^8.1.0",
@@ -41461,19 +41595,27 @@
       "dependencies": {
         "abbrev": {
           "version": "1.1.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "are-we-there-yet": {
           "version": "1.1.5",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "delegates": "^1.0.0",
             "readable-stream": "^2.0.6"
@@ -41481,11 +41623,15 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -41493,57 +41639,81 @@
         },
         "chownr": {
           "version": "1.1.3",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "debug": {
           "version": "3.2.6",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "ms": "^2.1.1"
           }
         },
         "deep-extend": {
           "version": "0.6.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "delegates": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "detect-libc": {
           "version": "1.0.3",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "fs-minipass": {
           "version": "1.2.7",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "minipass": "^2.6.0"
           }
         },
         "fs.realpath": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "gauge": {
           "version": "2.7.4",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "aproba": "^1.0.3",
             "console-control-strings": "^1.0.0",
@@ -41558,6 +41728,8 @@
         "glob": {
           "version": "7.1.6",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "^1.0.0",
             "inflight": "^1.0.4",
@@ -41569,11 +41741,15 @@
         },
         "has-unicode": {
           "version": "2.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "iconv-lite": {
           "version": "0.4.24",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "safer-buffer": ">= 2.1.2 < 3"
           }
@@ -41581,6 +41757,8 @@
         "ignore-walk": {
           "version": "3.0.3",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "minimatch": "^3.0.4"
           }
@@ -41588,6 +41766,8 @@
         "inflight": {
           "version": "1.0.6",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "once": "^1.3.0",
             "wrappy": "1"
@@ -41595,37 +41775,51 @@
         },
         "inherits": {
           "version": "2.0.4",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
         },
         "isarray": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.9.0",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -41634,6 +41828,8 @@
         "minizlib": {
           "version": "1.3.3",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "minipass": "^2.9.0"
           }
@@ -41641,17 +41837,23 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
         },
         "ms": {
           "version": "2.1.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "needle": {
           "version": "2.4.0",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "debug": "^3.2.6",
             "iconv-lite": "^0.4.4",
@@ -41661,6 +41863,8 @@
         "node-pre-gyp": {
           "version": "0.14.0",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "detect-libc": "^1.0.2",
             "mkdirp": "^0.5.1",
@@ -41677,6 +41881,8 @@
         "nopt": {
           "version": "4.0.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "abbrev": "1",
             "osenv": "^0.1.4"
@@ -41685,17 +41891,23 @@
         "npm-bundled": {
           "version": "1.1.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "npm-normalize-package-bin": "^1.0.1"
           }
         },
         "npm-normalize-package-bin": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "npm-packlist": {
           "version": "1.4.7",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "ignore-walk": "^3.0.1",
             "npm-bundled": "^1.0.1"
@@ -41704,6 +41916,8 @@
         "npmlog": {
           "version": "4.1.2",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "are-we-there-yet": "~1.1.2",
             "console-control-strings": "~1.1.0",
@@ -41713,30 +41927,42 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
         },
         "os-homedir": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "os-tmpdir": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "osenv": {
           "version": "0.1.5",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "os-homedir": "^1.0.0",
             "os-tmpdir": "^1.0.0"
@@ -41744,15 +41970,21 @@
         },
         "path-is-absolute": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "process-nextick-args": {
           "version": "2.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "rc": {
           "version": "1.2.8",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "deep-extend": "^0.6.0",
             "ini": "~1.3.0",
@@ -41762,13 +41994,17 @@
           "dependencies": {
             "minimist": {
               "version": "1.2.0",
-              "bundled": true
+              "bundled": true,
+              "dev": true,
+              "optional": true
             }
           }
         },
         "readable-stream": {
           "version": "2.3.6",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.3",
@@ -41782,37 +42018,53 @@
         "rimraf": {
           "version": "2.7.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "glob": "^7.1.3"
           }
         },
         "safe-buffer": {
           "version": "5.1.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "sax": {
           "version": "1.2.4",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "semver": {
           "version": "5.7.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "set-blocking": {
           "version": "2.0.0",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "signal-exit": {
           "version": "3.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "string_decoder": {
           "version": "1.1.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "~5.1.0"
           }
@@ -41820,6 +42072,8 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -41829,17 +42083,23 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
         },
         "strip-json-comments": {
           "version": "2.0.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "tar": {
           "version": "4.4.13",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "chownr": "^1.1.1",
             "fs-minipass": "^1.2.5",
@@ -41852,22 +42112,30 @@
         },
         "util-deprecate": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "wide-align": {
           "version": "1.1.3",
           "bundled": true,
+          "dev": true,
+          "optional": true,
           "requires": {
             "string-width": "^1.0.2 || 2"
           }
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.1.1",
-          "bundled": true
+          "bundled": true,
+          "dev": true,
+          "optional": true
         }
       }
     },
diff --git a/package.json b/package.json
index e7772cbe3..2c034efb7 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@hackmd/imgur": "~0.5.0",
     "@hackmd/lz-string": "~1.4.4",
     "@hackmd/meta-marked": "~0.5.0",
-    "@hackmd/pandoc.js": "^0.1.9",
+    "@hackmd/pandoc.js": "^0.2.0",
     "@passport-next/passport-openid": "~1.0.0",
     "archiver": "~3.1.1",
     "async": "^3.2.4",