diff --git a/lib/models/note.js b/lib/models/note.js
index 7f19f751..70ee6c52 100644
--- a/lib/models/note.js
+++ b/lib/models/note.js
@@ -13,7 +13,8 @@ var async = require('async')
 var moment = require('moment')
 var DiffMatchPatch = require('@hackmd/diff-match-patch')
 var dmp = new DiffMatchPatch()
-var S = require('string')
+
+const {stripTags} = require('../../utils/string')
 
 // core
 var config = require('../config')
@@ -338,7 +339,7 @@ module.exports = function (sequelize, DataTypes) {
       title = meta.title
     } else {
       var h1s = $('h1')
-      if (h1s.length > 0 && h1s.first().text().split('\n').length === 1) { title = S(h1s.first().text()).stripTags().s }
+      if (h1s.length > 0 && h1s.first().text().split('\n').length === 1) { title = stripTags(h1s.first().text()) }
     }
     if (!title) title = 'Untitled'
     return title
@@ -368,7 +369,7 @@ module.exports = function (sequelize, DataTypes) {
         if (/^tags/gmi.test($(value).text())) {
           var codes = $(value).find('code')
           for (let i = 0; i < codes.length; i++) {
-            var text = S($(codes[i]).text().trim()).stripTags().s
+            var text = stripTags($(codes[i]).text().trim())
             if (text) rawtags.push(text)
           }
         }
diff --git a/package.json b/package.json
index f92fede3..7d36f60d 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "CodiMD",
+  "name": "codimd",
   "version": "1.3.1",
   "description": "Realtime collaborative markdown notes on all platforms.",
   "main": "app.js",
@@ -19,7 +19,7 @@
     "@hackmd/codemirror": "^5.41.2",
     "@hackmd/diff-match-patch": "^1.1.1",
     "@hackmd/idle-js": "^1.0.1",
-    "@hackmd/imgur": "^0.4.0",
+    "@hackmd/imgur": "^0.4.1",
     "@hackmd/js-sequence-diagrams": "^0.0.1-alpha.2",
     "@passport-next/passport-openid": "^1.0.0",
     "archiver": "^2.1.1",
@@ -117,7 +117,6 @@
     "spin.js": "^2.3.2",
     "sqlite3": "^4.0.1",
     "store": "^2.0.12",
-    "string": "^3.3.3",
     "tedious": "^1.14.0",
     "toobusy-js": "^0.5.1",
     "turndown": "^5.0.1",
@@ -184,7 +183,7 @@
     "html-webpack-plugin": "4.0.0-beta.2",
     "imports-loader": "^0.8.0",
     "jsonlint": "^1.6.2",
-    "less": "^2.7.1",
+    "less": "^3.9.0",
     "less-loader": "^4.1.0",
     "mini-css-extract-plugin": "^0.4.1",
     "mocha": "^5.2.0",
diff --git a/public/js/cover.js b/public/js/cover.js
index 79fb3a2a..3324e556 100644
--- a/public/js/cover.js
+++ b/public/js/cover.js
@@ -30,7 +30,7 @@ import {
 
 import { saveAs } from 'file-saver'
 import List from 'list.js'
-import S from 'string'
+import unescapeHTML from 'lodash/unescape'
 
 const options = {
   valueNames: ['id', 'text', 'timestamp', 'fromNow', 'time', 'tags', 'pinned'],
@@ -397,7 +397,7 @@ function buildTagsFilter (tags) {
   for (let i = 0; i < tags.length; i++) {
     tags[i] = {
       id: i,
-      text: S(tags[i]).unescapeHTML().s
+      text: unescapeHTML(tags[i])
     }
   }
   filtertags = tags
diff --git a/public/js/extra.js b/public/js/extra.js
index b80290d1..a8430c68 100644
--- a/public/js/extra.js
+++ b/public/js/extra.js
@@ -13,9 +13,13 @@ require('prismjs/components/prism-gherkin')
 import Prism from 'prismjs'
 import hljs from 'highlight.js'
 import PDFObject from 'pdfobject'
-import S from 'string'
 import { saveAs } from 'file-saver'
 
+import escapeHTML from 'lodash/escape'
+import unescapeHTML from 'lodash/unescape'
+
+import {stripTags} from '../../utils/string'
+
 require('./lib/common/login')
 require('../vendor/md-toc')
 var Viz = require('viz.js')
@@ -157,7 +161,7 @@ export function renderTags (view) {
 
 function slugifyWithUTF8 (text) {
   // remove html tags and trim spaces
-  let newText = S(text).trim().stripTags().s
+  let newText = stripTags(text.toString().trim())
   // replace all spaces in between to dashes
   newText = newText.replace(/\s+/g, '-')
   // slugify string to make it valid for attribute
@@ -492,22 +496,22 @@ export function finishView (view) {
                 value: code
               }
             } else if (reallang === 'haskell' || reallang === 'go' || reallang === 'typescript' || reallang === 'jsx' || reallang === 'gherkin') {
-              code = S(code).unescapeHTML().s
+              code = unescapeHTML(code)
               result = {
                 value: Prism.highlight(code, Prism.languages[reallang])
               }
             } else if (reallang === 'tiddlywiki' || reallang === 'mediawiki') {
-              code = S(code).unescapeHTML().s
+              code = unescapeHTML(code)
               result = {
                 value: Prism.highlight(code, Prism.languages.wiki)
               }
             } else if (reallang === 'cmake') {
-              code = S(code).unescapeHTML().s
+              code = unescapeHTML(code)
               result = {
                 value: Prism.highlight(code, Prism.languages.makefile)
               }
             } else {
-              code = S(code).unescapeHTML().s
+              code = unescapeHTML(code)
               const languages = hljs.listLanguages()
               if (!languages.includes(reallang)) {
                 result = hljs.highlightAuto(code)
@@ -902,7 +906,7 @@ export function scrollToHash () {
 
 function highlightRender (code, lang) {
   if (!lang || /no(-?)highlight|plain|text/.test(lang)) { return }
-  code = S(code).escapeHTML().s
+  code = escapeHTML(code)
   if (lang === 'sequence') {
     return `<div class="sequence-diagram raw">${code}</div>`
   } else if (lang === 'flow') {
diff --git a/public/js/history.js b/public/js/history.js
index d9beedf4..b085a19a 100644
--- a/public/js/history.js
+++ b/public/js/history.js
@@ -2,9 +2,10 @@
 /* global serverurl, moment */
 
 import store from 'store'
-import S from 'string'
 import LZString from 'lz-string'
 
+import escapeHTML from 'lodash/escape'
+
 import wurl from 'wurl'
 
 import {
@@ -276,8 +277,8 @@ function parseToHistory (list, notehistory, callback) {
       notehistory[i].fromNow = timestamp.fromNow()
       notehistory[i].time = timestamp.format('llll')
             // prevent XSS
-      notehistory[i].text = S(notehistory[i].text).escapeHTML().s
-      notehistory[i].tags = (notehistory[i].tags && notehistory[i].tags.length > 0) ? S(notehistory[i].tags).escapeHTML().s.split(',') : []
+      notehistory[i].text = escapeHTML(notehistory[i].text)
+      notehistory[i].tags = (notehistory[i].tags && notehistory[i].tags.length > 0) ? escapeHTML(notehistory[i].tags).split(',') : []
             // add to list
       if (notehistory[i].id && list.get('id', notehistory[i].id).length === 0) { list.add(notehistory[i]) }
     }
diff --git a/utils/string.js b/utils/string.js
new file mode 100644
index 00000000..53894d04
--- /dev/null
+++ b/utils/string.js
@@ -0,0 +1,7 @@
+'use strict'
+
+function stripTags(s) {
+  return s.replace(RegExp(`</?[^<>]*>`, 'gi'), '')
+}
+
+exports.stripTags = stripTags
diff --git a/yarn.lock b/yarn.lock
index 92f46ded..94955170 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -33,10 +33,10 @@
   resolved "https://registry.yarnpkg.com/@hackmd/idle-js/-/idle-js-1.0.1.tgz#89079a76d9c7bda87029660a708e72fbb2be3605"
   integrity sha512-yuv9BBdA5rk4TpmSrsdNgkLIyRt73hWyBEs7PhWhIozFcNv66JfUzXqA0eT3ToXX0163aVnbpHeJZRvcYy5Seg==
 
-"@hackmd/imgur@^0.4.0":
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/@hackmd/imgur/-/imgur-0.4.0.tgz#e5716f6a7a12e8011ceb57f46369fcc958623e19"
-  integrity sha512-519G+fXIDu1LUwPU32nerot4wuP2pSDEBysOj9nX6IYL5qom/lo6vmp3bp0bg7SbtHWvmjZEDOermCrlqR18xw==
+"@hackmd/imgur@^0.4.1":
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/@hackmd/imgur/-/imgur-0.4.1.tgz#9d51dafc4fd0baf36a8fb7a8a5c23f2f660d3ad2"
+  integrity sha512-zvAt/4drM+nZG/yM12hJ7/DtkPffw/fzvr8oDp6twg5a04/HBoGha28vYrZP4fV/a5ZAAnRzxRRbeADxRfsGfA==
   dependencies:
     glob "^7.1.3"
     request "^2.88.0"
@@ -1976,7 +1976,7 @@ cliui@^4.0.0:
     strip-ansi "^4.0.0"
     wrap-ansi "^2.0.0"
 
-clone@^2.1.1:
+clone@^2.1.1, clone@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
   integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
@@ -5414,19 +5414,21 @@ less-loader@^4.1.0:
     loader-utils "^1.1.0"
     pify "^3.0.0"
 
-less@^2.7.1:
-  version "2.7.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-2.7.3.tgz#cc1260f51c900a9ec0d91fb6998139e02507b63b"
-  integrity sha512-KPdIJKWcEAb02TuJtaLrhue0krtRLoRoo7x6BNJIBelO00t/CCdJQUnHW5V34OnHMWzIktSalJxRO+FvytQlCQ==
+less@^3.9.0:
+  version "3.9.0"
+  resolved "https://registry.yarnpkg.com/less/-/less-3.9.0.tgz#b7511c43f37cf57dc87dffd9883ec121289b1474"
+  integrity sha512-31CmtPEZraNUtuUREYjSqRkeETFdyEHSEPAGq4erDlUXtda7pzNmctdljdIagSb589d/qXGWiiP31R5JVf+v0w==
+  dependencies:
+    clone "^2.1.2"
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"
     image-size "~0.5.0"
-    mime "^1.2.11"
+    mime "^1.4.1"
     mkdirp "^0.5.0"
     promise "^7.1.1"
-    request "2.81.0"
-    source-map "^0.5.3"
+    request "^2.83.0"
+    source-map "~0.6.0"
 
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
@@ -5982,7 +5984,7 @@ mime@1.4.1:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
   integrity sha512-KI1+qOZu5DcW6wayYHSzR/tXKCDC5Om4s1z2QJjDULzLcmf3DvzS7oluY4HCTrc+9FiKmWUgeNLg7W3uIQvxtQ==
 
-mime@^1.2.11:
+mime@^1.4.1:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
   integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
@@ -8046,7 +8048,7 @@ request-promise-native@^1.0.5:
     stealthy-require "^1.1.1"
     tough-cookie "^2.3.3"
 
-request@2.81.0, request@2.x, request@^2.61.0, request@^2.81.0, request@^2.86.0, request@^2.87.0, request@^2.88.0:
+request@2.x, request@^2.61.0, request@^2.81.0, request@^2.83.0, request@^2.86.0, request@^2.87.0, request@^2.88.0:
   version "2.88.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
   integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==
@@ -8829,11 +8831,6 @@ string-width@^3.0.0:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^5.1.0"
 
-string@^3.3.3:
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/string/-/string-3.3.3.tgz#5ea211cd92d228e184294990a6cc97b366a77cb0"
-  integrity sha1-XqIRzZLSKOGEKUmQpsyXs2anfLA=
-
 string_decoder@^1.0.0, string_decoder@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.2.0.tgz#fe86e738b19544afe70469243b2a1ee9240eae8d"