diff --git a/index.js b/index.js
index 9ebaf94..b2975fc 100644
--- a/index.js
+++ b/index.js
@@ -14,12 +14,11 @@ app.post('/html', function(req, res) {
   params = req.body;
   res.setHeader('Content-Type', 'text/html');
   res.statusCode = 200;
-  html = utils.getHtml({
+  const project = params.project ? { slug: params.project } : undefined;
+  const html = utils.getHtml({
     baseURI: 'https://www.zooniverse.org',
     content: params.markdown,
-    project: {
-      slug: params.project
-    }
+    project
   })
   res.end('<div>' + html + '</div>');
 });
diff --git a/lib/markdown.js b/lib/markdown.js
deleted file mode 100644
index 94bed40..0000000
--- a/lib/markdown.js
+++ /dev/null
@@ -1,67 +0,0 @@
-var MarkdownIt = require('markdown-it');
-var MarkdownItContainer = require('markdown-it-container');
-var twemoji = require('@twemoji/api');
-
-var markdownIt = new MarkdownIt({ linkify: true, breaks: true });
-
-markdownIt
-  .use(require('markdown-it-emoji'))
-  .use(require('markdown-it-sub'))
-  .use(require('markdown-it-sup'))
-  .use(require('markdown-it-footnote'))
-  .use(MarkdownItContainer, 'partners')
-  .use(MarkdownItContainer, 'attribution');
-
-var host = {
-  production: 'https://www.zooniverse.org',
-  staging: 'http://demo.zooniverse.org/panoptes-front-end'
-}[process.env.NODE_ENV] || 'http://localhost:3735';
-
-function Markdown(input, project) {
-  this.input = input;
-  this.project = project;
-}
-
-Markdown.prototype.customTags = function(input) {
-  var project = this.project;
-
-  return input
-    .replace(/(^|[^\w])(\#([-\w\d]{3,40}))/g, function(fullMatch, boundary, fullTag, tagName) {
-      if(project) {
-        return boundary + '<a href="' + host + '/projects/' + project + '/talk/search?query=' + tagName + '">' + fullTag + '</a>';
-      } else {
-        return boundary + '<a href="' + host + '/talk/search?query=' + tagName + '">' + fullTag + '</a>';
-      }
-    })
-    .replace(/\^S0*(\d+)/g, function(fullMatch, subjectId) {
-      if(project) {
-        return '<a href="' + host + '/projects/' + project + '/subjects/' + subjectId + '">' + project + ' - Subject ' + subjectId + '</a>'
-      } else {
-        return fullMatch;
-      }
-    })
-    .replace(/@([\w-]+)\/([\w-]+)\^S0*(\d+)/g, '<a href="' + host + '/projects/$1/$2/talk/subjects/$3">$1/$2 - Subject $3</a>')
-    .replace(/\^C0*(\d+)/g, '<a href="' + host + '/talk/collections/$1">Collection $1</a>')
-    .replace(/@([-\w\d]+)/g, function(fullMatch, username) {
-      var groups = ['admins', 'moderators', 'researchers', 'scientists', 'team'];
-      if(groups.indexOf(username) < 0) {
-        return '<a href="' + host + '/users/' + username + '">@' + username + '</a>';
-      } else {
-        return '@' + username;
-      }
-    });
-};
-
-Markdown.prototype.emoji = function(input) {
-  return twemoji.parse(input);
-};
-
-Markdown.prototype.render = function(input) {
-  return markdownIt.render(input);
-};
-
-Markdown.prototype.html = function () {
-  return this.emoji(this.customTags(this.render(this.input)));
-};
-
-module.exports = Markdown;
diff --git a/package-lock.json b/package-lock.json
index 0f08f08..9565ca7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,6 @@
       "version": "1.0.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "@twemoji/api": "^14.1.2",
         "body-parser": "^1.20.2",
         "express": "^4.18.2",
         "markdownz": "^9.1.4",
diff --git a/package.json b/package.json
index 67672e7..3498498 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,6 @@
   "author": "The Zooniverse",
   "license": "Apache-2.0",
   "dependencies": {
-    "@twemoji/api": "^14.1.2",
     "body-parser": "^1.20.2",
     "express": "^4.18.2",
     "markdownz": "^9.1.4",