diff --git a/package-lock.json b/package-lock.json
index 7a037ce..c3a0468 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -998,6 +998,20 @@
       "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
       "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ=="
     },
+    "@types/prop-types": {
+      "version": "15.7.3",
+      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.3.tgz",
+      "integrity": "sha512-KfRL3PuHmqQLOG+2tGpRO26Ctg+Cq1E01D2DMriKEATHgWLfeNDmq9e29Q9WIky0dQ3NPkd1mzYH8Lm936Z9qw=="
+    },
+    "@types/react": {
+      "version": "17.0.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-17.0.0.tgz",
+      "integrity": "sha512-aj/L7RIMsRlWML3YB6KZiXB3fV2t41+5RBGYF8z+tAKU43Px8C3cYUZsDvf1/+Bm4FK21QWBrDutu8ZJ/70qOw==",
+      "requires": {
+        "@types/prop-types": "*",
+        "csstype": "^3.0.2"
+      }
+    },
     "JSONStream": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.5.tgz",
@@ -1693,6 +1707,11 @@
         "randomfill": "^1.0.3"
       }
     },
+    "csstype": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.0.5.tgz",
+      "integrity": "sha512-uVDi8LpBUKQj6sdxNaTetL6FpeCqTjOvAQuQUa/qAqq8oOd4ivkbhgnqayl0dnPal8Tb/yB1tF+gOvCBiicaiQ=="
+    },
     "dash-ast": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/dash-ast/-/dash-ast-1.0.0.tgz",
@@ -1771,6 +1790,14 @@
         }
       }
     },
+    "discord-markdown": {
+      "version": "git+https://git.sr.ht/~cadence/nodejs-discord-markdown#e5d0a953764cd8e8e0f7ea84c93a882fe16f6e3d",
+      "from": "git+https://git.sr.ht/~cadence/nodejs-discord-markdown#e5d0a953764cd8e8e0f7ea84c93a882fe16f6e3d",
+      "requires": {
+        "highlight.js": "^10.3.2",
+        "simple-markdown": "^0.7.2"
+      }
+    },
     "doctypes": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/doctypes/-/doctypes-1.1.0.tgz",
@@ -3126,6 +3153,14 @@
       "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.1.tgz",
       "integrity": "sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q=="
     },
+    "simple-markdown": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/simple-markdown/-/simple-markdown-0.7.2.tgz",
+      "integrity": "sha512-XfCvqqzMyzRj4L7eIxJgGaQ2Gaxr20GhTFMB+1yuY8q3xffjzmOg4Q5tC0kcaJPV42NNUHCQDaRK6jzi3/RhrA==",
+      "requires": {
+        "@types/react": ">=16.0.0"
+      }
+    },
     "source-map": {
       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
diff --git a/package.json b/package.json
index 4dfc834..8c1d24a 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "@babel/preset-env": "^7.11.0",
     "browserify": "^17.0.0",
     "chalk": "^4.1.0",
+    "discord-markdown": "git+https://git.sr.ht/~cadence/nodejs-discord-markdown#e5d0a953764cd8e8e0f7ea84c93a882fe16f6e3d",
     "dompurify": "^2.2.0",
     "highlight.js": "^10.3.2",
     "http-server": "^0.12.3",
diff --git a/src/js/chat-input.js b/src/js/chat-input.js
index 23d06fe..63921fd 100644
--- a/src/js/chat-input.js
+++ b/src/js/chat-input.js
@@ -2,13 +2,16 @@ const {q} = require("./basic.js")
 const {store} = require("./store/store.js")
 const lsm = require("./lsm.js")
 const {chat} = require("./chat.js")
+const {toHTML} = require("discord-markdown")
 
 const input = q("#c-chat-textarea")
 
 class TypingManager {
 	constructor() {
-		this.time = 20000 // how long to appear to type for
-		this.margin = 5000 // how long before the end of the timeout to send the request again
+		/** How long to appear to type for. */
+		this.time = 20000
+		/** How long before the end of the timeout to send the request again. */
+		this.margin = 5000
 		/** The room that we're typing in. We can semantically only type in one room at a time. */
 		this.typingRoom = null
 		this.timeout = null
@@ -95,5 +98,12 @@ function fixHeight() {
 function send(body) {
 	if (!store.activeRoom.exists()) return
 	if (!body.trim().length) return
-	return store.activeRoom.value().timeline.send(body)
+	const content = {
+		msgtype: "m.text",
+		format: "org.matrix.custom.html",
+		body,
+		formatted_body: toHTML(body),
+		"chat.carbon.input_body": body
+	}
+	return store.activeRoom.value().timeline.send("m.room.message", content)
 }
diff --git a/src/js/timeline.js b/src/js/timeline.js
index a4c74fa..63f7a04 100644
--- a/src/js/timeline.js
+++ b/src/js/timeline.js
@@ -324,17 +324,13 @@ class Timeline extends Subscribable {
 		this.broadcast("afterScrollbackLoad")
 	}
 
-	send(body) {
+	send(type, content) {
 		const tx = getTxnId()
 		const id = `pending$${tx}`
 		this.pending.add(id)
-		const content = {
-			msgtype: "m.text",
-			body,
-			"chat.carbon.message.pending_id": id
-		}
+		content["chat.carbon.message.pending_id"] = id
 		const fakeEvent = {
-			type: "m.room.message",
+			type,
 			origin_server_ts: Date.now(),
 			event_id: id,
 			sender: lsm.get("mx_user_id"),