diff --git a/app/controllers/composer_controller.rb b/app/controllers/composer_controller.rb
deleted file mode 100644
index 7f275027e53..00000000000
--- a/app/controllers/composer_controller.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-# frozen_string_literal: true
-
-class ComposerController < ApplicationController
-
-  requires_login
-
-  def parse_html
-    markdown_text = HtmlToMarkdown.new(params[:html]).to_markdown
-
-    render json: { markdown: markdown_text }
-  end
-end
diff --git a/config/routes.rb b/config/routes.rb
index 7e98e510e4c..5d61ccc630b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -349,7 +349,6 @@ Discourse::Application.routes.draw do
   get "session/otp/:token" => "session#one_time_password", constraints: { token: /[0-9a-f]+/ }
   post "session/otp/:token" => "session#one_time_password", constraints: { token: /[0-9a-f]+/ }
   get "composer_messages" => "composer_messages#index"
-  post "composer/parse_html" => "composer#parse_html"
 
   resources :static
   post "login" => "static#enter"
diff --git a/spec/requests/composer_controller_spec.rb b/spec/requests/composer_controller_spec.rb
deleted file mode 100644
index a6b7d2c663e..00000000000
--- a/spec/requests/composer_controller_spec.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-# frozen_string_literal: true
-
-require 'rails_helper'
-
-RSpec.describe ComposerController do
-  fab!(:user) { Fabricate(:user) }
-
-  describe '#parse_html' do
-
-    it "should not be able access without sign in" do
-      post "/composer/parse_html.json", params: {
-        html: "<strong>hello</strong>"
-      }
-      expect(response.status).to eq(403)
-    end
-
-    it "should convert html tags to markdown text" do
-      sign_in(user)
-
-      post "/composer/parse_html.json", params: {
-        html: "<strong>hello</strong>"
-      }
-
-      expect(response.body).to eq("{\"markdown\":\"**hello**\"}")
-    end
-  end
-end