diff --git a/repo/font-chooser/mod.js b/repo/font-chooser/mod.js
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+++ b/repo/font-chooser/mod.js
@@ -0,0 +1,95 @@
+/*
+ * font chooser
+ * (c) 2020 torchatlas (https://bit.ly/torchatlas)
+ * under the MIT license
+ */
+
+'use strict';
+
+module.exports = {
+	id: 'e0d8d148-45e7-4d79-8313-e7b2ad8abe16',
+	tags: ['extension'],
+	name: 'font chooser',
+	desc: 'customize fonts. for each option, type in the name of the font you would like to use, or leave it blank to not change anything.',
+	version: '0.1.0',
+	author: 'torchatlas',
+	options: [
+		{
+			key: 'sansSerif',
+			label: 'Sans Serif and UI',
+			type: 'input',
+			value: '',
+		},
+		{
+			key: 'serif',
+			label: 'Serif',
+			type: 'input',
+			value: ''
+		},
+		{
+			key: 'mono',
+			label: 'Monospace',
+			type: 'input',
+			value: ''
+		},
+		{
+			key: 'code',
+			label: 'Code',
+			type: 'input',
+			value: ''
+		}
+	],
+	hacks: {
+		'renderer/preload.js'(store, __exports) {
+			document.addEventListener('readystatechange', (event) => {
+
+				if (document.readyState !== 'complete') return false;
+
+				if (store().sansSerif != '') {
+					document.documentElement.style.setProperty(
+						'--theme_dark--font_sans',
+						store().sansSerif
+					);
+					document.documentElement.style.setProperty(
+						'--theme_light--font_sans',
+						store().sansSerif
+					);	
+				}
+
+				if (store().serif != '') {
+					document.documentElement.style.setProperty(
+						'--theme_dark--font_serif',
+						store().serif
+					);
+					document.documentElement.style.setProperty(
+						'--theme_light--font_serif',
+						store().serif
+					);	
+				}
+
+				if (store().mono != '') {
+					document.documentElement.style.setProperty(
+						'--theme_dark--font_mono',
+						store().mono
+					);
+					document.documentElement.style.setProperty(
+						'--theme_light--font_mono',
+						store().mono
+					);	
+				}
+
+				if (store().code != '') {
+					document.documentElement.style.setProperty(
+						'--theme_dark--font_code',
+						store().code
+					);
+					document.documentElement.style.setProperty(
+						'--theme_light--font_code',
+						store().code
+					);	
+				}
+
+			});
+		}
+	}
+}
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