diff --git a/packages/backend/package.json b/packages/backend/package.json
index d9c830baf..23f2ca723 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -67,7 +67,7 @@
 		"koa-send": "5.0.1",
 		"koa-slow": "2.1.0",
 		"koa-views": "7.0.2",
-		"mfm-js": "0.22.1",
+		"mfm-js": "0.23.3",
 		"mime-types": "2.1.35",
 		"mocha": "10.2.0",
 		"multer": "1.4.5-lts.1",
diff --git a/packages/client/package.json b/packages/client/package.json
index d9a994d4a..fe7356f90 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -34,7 +34,7 @@
 		"json5": "2.2.1",
 		"katex": "0.16.0",
 		"matter-js": "0.18.0",
-		"mfm-js": "0.22.1",
+		"mfm-js": "0.23.3",
 		"photoswipe": "5.2.8",
 		"prismjs": "1.28.0",
 		"punycode": "2.1.1",
diff --git a/packages/client/src/components/mfm.ts b/packages/client/src/components/mfm.ts
index 64fe5bdb5..68f447add 100644
--- a/packages/client/src/components/mfm.ts
+++ b/packages/client/src/components/mfm.ts
@@ -10,7 +10,6 @@ import MkSearch from '@/components/mfm-search.vue';
 import MkSparkle from '@/components/sparkle.vue';
 import MkA from '@/components/global/a.vue';
 import { host } from '@/config';
-import { MFM_TAGS } from '@/scripts/mfm-tags';
 
 export default defineComponent({
 	props: {
@@ -37,12 +36,16 @@ export default defineComponent({
 			type: Boolean,
 			default: true,
 		},
+		rootScale: {
+			type: Number,
+			default: 1
+		}
 	},
 
 	render() {
 		if (this.text == null || this.text === '') return;
 
-		const ast = (this.plain ? mfm.parsePlain : mfm.parse)(this.text, { fnNameList: MFM_TAGS });
+		const ast = (this.plain ? mfm.parseSimple : mfm.parse)(this.text);
 
 		const validTime = (t: string | true) => {
 			if (typeof t !== 'string') return null;
@@ -50,7 +53,7 @@ export default defineComponent({
 			return t.match(/^[0-9.]+s$/) ? t : null;
 		};
 
-		const genEl = (ast: mfm.MfmNode[]) => ast.map((token): VNode | VNode[] => {
+		const genEl = (ast: mfm.MfmNode[], scale: Number) => ast.map((token): VNode | VNode[] => {
 			switch (token.type) {
 				case 'text': {
 					const text = token.props.text.replace(/(\r\n|\n|\r)/g, '\n');
@@ -69,17 +72,17 @@ export default defineComponent({
 				}
 
 				case 'bold': {
-					return h('b', genEl(token.children));
+					return h('b', genEl(token.children, scale));
 				}
 
 				case 'strike': {
-					return h('del', genEl(token.children));
+					return h('del', genEl(token.children, scale));
 				}
 
 				case 'italic': {
 					return h('i', {
 						style: 'font-style: oblique;',
-					}, genEl(token.children));
+					}, genEl(token.children, scale));
 				}
 
 				case 'fn': {
@@ -139,18 +142,18 @@ export default defineComponent({
 						}
 						case 'x2': {
 							return h('span', {
-								class: 'mfm-x2',
-							}, genEl(token.children));
+								class: 'mfm-x2'
+							}, genEl(token.children, scale * 2));
 						}
 						case 'x3': {
 							return h('span', {
-								class: 'mfm-x3',
-							}, genEl(token.children));
+								class: 'mfm-x3'
+							}, genEl(token.children, scale * 3));
 						}
 						case 'x4': {
 							return h('span', {
-								class: 'mfm-x4',
-							}, genEl(token.children));
+								class: 'mfm-x4'
+							}, genEl(token.children, scale * 4));
 						}
 						case 'font': {
 							const family =
@@ -167,7 +170,7 @@ export default defineComponent({
 						case 'blur': {
 							return h('span', {
 								class: '_mfm_blur_',
-							}, genEl(token.children));
+							}, genEl(token.children, scale));
 						}
 						case 'rainbow': {
 							const speed = validTime(token.props.args.speed) || '1s';
@@ -176,35 +179,60 @@ export default defineComponent({
 						}
 						case 'sparkle': {
 							if (!this.$store.state.animatedMfm) {
-								return genEl(token.children);
+								return genEl(token.children, scale);
 							}
-							return h(MkSparkle, {}, genEl(token.children));
+							return h(MkSparkle, {}, genEl(token.children, scale));
 						}
 						case 'rotate': {
 							const degrees = (typeof token.props.args.deg === 'string' ? parseInt(token.props.args.deg) : null) || '90';
 							style = `transform: rotate(${degrees}deg); transform-origin: center center;`;
 							break;
 						}
+						case 'position': {
+							const x = parseFloat(token.props.args.x ?? '0');
+							const y = parseFloat(token.props.args.y ?? '0');
+							style = `transform: translateX(${x}em) translateY(${y}em);`;
+							break;
+						}
+						case 'scale': {
+							const x = Math.min(parseFloat(token.props.args.x ?? '1'), 5);
+							const y = Math.min(parseFloat(token.props.args.y ?? '1'), 5);
+							style = `transform: scale(${x}, ${y});`;
+							scale = scale * Math.max(x, y);
+							break;
+						}
+						case 'fg': {
+							let color = token.props.args.color;
+							if (!/^[0-9a-f]{3,6}$/i.test(color)) color = 'f00';
+							style = `color: #${color};`;
+							break;
+						}
+						case 'bg': {
+							let color = token.props.args.color;
+							if (!/^[0-9a-f]{3,6}$/i.test(color)) color = 'f00';
+							style = `background-color: #${color};`;
+							break;
+						}
 					}
 					if (style == null) {
-						return h('span', {}, ['$[', token.props.name, ' ', ...genEl(token.children), ']']);
+						return h('span', {}, ['$[', token.props.name, ' ', ...genEl(token.children, scale), ']']);
 					} else {
 						return h('span', {
 							style: 'display: inline-block;' + style,
-						}, genEl(token.children));
+						}, genEl(token.children, scale));
 					}
 				}
 
 				case 'small': {
 					return h('small', {
 						class: '_mfm_small_'
-					}, genEl(token.children));
+					}, genEl(token.children, scale));
 				}
 
 				case 'center': {
 					return h('div', {
 						style: 'text-align:center;',
-					}, genEl(token.children));
+					}, genEl(token.children, scale));
 				}
 
 				case 'url': {
@@ -220,7 +248,7 @@ export default defineComponent({
 						key: Math.random(),
 						url: token.props.url,
 						rel: 'nofollow noopener',
-					}, genEl(token.children));
+					}, genEl(token.children, scale));
 				}
 
 				case 'mention': {
@@ -258,7 +286,7 @@ export default defineComponent({
 				case 'quote': {
 					return h(this.nowrap ? 'span' : 'div', {
 						class: 'quote',
-					}, genEl(token.children));
+					}, genEl(token.children, scale));
 				}
 
 				case 'emojiCode': {
@@ -311,6 +339,6 @@ export default defineComponent({
 		}).flat();
 
 		// Parse ast to DOM
-		return h('span', genEl(ast));
+		return h('span', genEl(ast, this.rootScale ?? 1));
 	},
 });
diff --git a/packages/client/src/scripts/mfm-tags.ts b/packages/client/src/scripts/mfm-tags.ts
index 18e8d7038..84415f400 100644
--- a/packages/client/src/scripts/mfm-tags.ts
+++ b/packages/client/src/scripts/mfm-tags.ts
@@ -1 +1 @@
-export const MFM_TAGS = ['tada', 'jelly', 'twitch', 'shake', 'spin', 'jump', 'bounce', 'flip', 'x2', 'x3', 'x4', 'font', 'blur', 'rainbow', 'sparkle', 'rotate'];
+export const MFM_TAGS = ['tada', 'jelly', 'twitch', 'shake', 'spin', 'jump', 'bounce', 'flip', 'x2', 'x3', 'x4', 'font', 'blur', 'rainbow', 'sparkle', 'rotate', 'position', 'scale', 'fg', 'bg'];
diff --git a/yarn.lock b/yarn.lock
index 1786f0c51..e4e95a074 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3750,7 +3750,7 @@ __metadata:
     koa-send: 5.0.1
     koa-slow: 2.1.0
     koa-views: 7.0.2
-    mfm-js: 0.22.1
+    mfm-js: 0.23.3
     mime-types: 2.1.35
     mocha: 10.2.0
     multer: 1.4.5-lts.1
@@ -4720,7 +4720,7 @@ __metadata:
     json5: 2.2.1
     katex: 0.16.0
     matter-js: 0.18.0
-    mfm-js: 0.22.1
+    mfm-js: 0.23.3
     photoswipe: 5.2.8
     prismjs: 1.28.0
     punycode: 2.1.1
@@ -11671,12 +11671,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"mfm-js@npm:0.22.1":
-  version: 0.22.1
-  resolution: "mfm-js@npm:0.22.1"
+"mfm-js@npm:0.23.3":
+  version: 0.23.3
+  resolution: "mfm-js@npm:0.23.3"
   dependencies:
-    twemoji-parser: 14.0.x
-  checksum: 6d9756c7bd8abf6462fb6403de4656f607a83839eb6b66a05b10eddcd201b5f78f5fe3d0df029936546143fd9cbf112e8369287aed32026e50bb03ce89b4c4f8
+    twemoji-parser: 14.0.0
+  checksum: 7079f80a53a9afc8599333f3256fb18a6bf7c01102a2f8f2be657843726a34835e2af34e26bc5b27e45b217fb2f120c0d3006e9fab2a972c845e9f7361e3cc1b
   languageName: node
   linkType: hard
 
@@ -16723,7 +16723,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"twemoji-parser@npm:14.0.0, twemoji-parser@npm:14.0.x":
+"twemoji-parser@npm:14.0.0":
   version: 14.0.0
   resolution: "twemoji-parser@npm:14.0.0"
   checksum: 8eede69cf71f94735de7b6fddf5dfbfe3cb2e01baefc3201360984ccc97cfc659f206c8f73bd1405a2282779af3b79a8c9bed3864c672e15e2dc6f8ce4810452