diff --git a/main.ts b/main.ts
index 2d07212..0261989 100644
--- a/main.ts
+++ b/main.ts
@@ -1,134 +1,13 @@
-import { App, Editor, MarkdownView, Modal, Notice, Plugin, PluginSettingTab, Setting } from 'obsidian';
+import { Plugin } from 'obsidian';
 
-// Remember to rename these classes and interfaces!
+const UNSAFE_CHAR_REGEX = /[*?<>"]/g;
 
-interface MyPluginSettings {
-	mySetting: string;
-}
-
-const DEFAULT_SETTINGS: MyPluginSettings = {
-	mySetting: 'default'
-}
-
-export default class MyPlugin extends Plugin {
-	settings: MyPluginSettings;
-
-	async onload() {
-		await this.loadSettings();
-
-		// This creates an icon in the left ribbon.
-		const ribbonIconEl = this.addRibbonIcon('dice', 'Sample Plugin', (evt: MouseEvent) => {
-			// Called when the user clicks the icon.
-			new Notice('This is a notice!');
-		});
-		// Perform additional things with the ribbon
-		ribbonIconEl.addClass('my-plugin-ribbon-class');
-
-		// This adds a status bar item to the bottom of the app. Does not work on mobile apps.
-		const statusBarItemEl = this.addStatusBarItem();
-		statusBarItemEl.setText('Status Bar Text');
-
-		// This adds a simple command that can be triggered anywhere
-		this.addCommand({
-			id: 'open-sample-modal-simple',
-			name: 'Open sample modal (simple)',
-			callback: () => {
-				new SampleModal(this.app).open();
-			}
-		});
-		// This adds an editor command that can perform some operation on the current editor instance
-		this.addCommand({
-			id: 'sample-editor-command',
-			name: 'Sample editor command',
-			editorCallback: (editor: Editor, view: MarkdownView) => {
-				console.log(editor.getSelection());
-				editor.replaceSelection('Sample Editor Command');
-			}
-		});
-		// This adds a complex command that can check whether the current state of the app allows execution of the command
-		this.addCommand({
-			id: 'open-sample-modal-complex',
-			name: 'Open sample modal (complex)',
-			checkCallback: (checking: boolean) => {
-				// Conditions to check
-				const markdownView = this.app.workspace.getActiveViewOfType(MarkdownView);
-				if (markdownView) {
-					// If checking is true, we're simply "checking" if the command can be run.
-					// If checking is false, then we want to actually perform the operation.
-					if (!checking) {
-						new SampleModal(this.app).open();
-					}
-
-					// This command will only show up in Command Palette when the check function returns true
-					return true;
-				}
-			}
-		});
-
-		// This adds a settings tab so the user can configure various aspects of the plugin
-		this.addSettingTab(new SampleSettingTab(this.app, this));
-
-		// If the plugin hooks up any global DOM events (on parts of the app that doesn't belong to this plugin)
-		// Using this function will automatically remove the event listener when this plugin is disabled.
-		this.registerDomEvent(document, 'click', (evt: MouseEvent) => {
-			console.log('click', evt);
-		});
-
-		// When registering intervals, this function will automatically clear the interval when the plugin is disabled.
-		this.registerInterval(window.setInterval(() => console.log('setInterval'), 5 * 60 * 1000));
-	}
-
-	onunload() {
-
-	}
-
-	async loadSettings() {
-		this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
-	}
-
-	async saveSettings() {
-		await this.saveData(this.settings);
-	}
-}
-
-class SampleModal extends Modal {
-	constructor(app: App) {
-		super(app);
-	}
-
-	onOpen() {
-		const {contentEl} = this;
-		contentEl.setText('Woah!');
-	}
-
-	onClose() {
-		const {contentEl} = this;
-		contentEl.empty();
-	}
-}
-
-class SampleSettingTab extends PluginSettingTab {
-	plugin: MyPlugin;
-
-	constructor(app: App, plugin: MyPlugin) {
-		super(app, plugin);
-		this.plugin = plugin;
-	}
-
-	display(): void {
-		const {containerEl} = this;
-
-		containerEl.empty();
-
-		new Setting(containerEl)
-			.setName('Setting #1')
-			.setDesc('It\'s a secret')
-			.addText(text => text
-				.setPlaceholder('Enter your secret')
-				.setValue(this.plugin.settings.mySetting)
-				.onChange(async (value) => {
-					this.plugin.settings.mySetting = value;
-					await this.plugin.saveSettings();
-				}));
-	}
+export default class SafeFilenames extends Plugin {
+    async onload() {
+        this.registerEvent(this.app.vault.on('rename', (file, oldPath) => {
+            if (UNSAFE_CHAR_REGEX.test(file.path)) {
+                this.app.fileManager.renameFile(file, file.path.replaceAll(UNSAFE_CHAR_REGEX, ''));
+            }
+        }));
+    }
 }
diff --git a/manifest.json b/manifest.json
index dfa940e..1c80431 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,11 +1,10 @@
 {
-	"id": "sample-plugin",
-	"name": "Sample Plugin",
+	"id": "safe-filenames",
+	"name": "Safe Filenames",
 	"version": "1.0.0",
 	"minAppVersion": "0.15.0",
-	"description": "Demonstrates some of the capabilities of the Obsidian API.",
-	"author": "Obsidian",
-	"authorUrl": "https://obsidian.md",
-	"fundingUrl": "https://obsidian.md/pricing",
+	"description": "Prevents renaming files with characters that can't be synced cross-platform.",
+	"author": "xenofem",
+	"authorUrl": "https://xeno.science",
 	"isDesktopOnly": false
 }
diff --git a/package.json b/package.json
index 6a00766..0319f4e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
-	"name": "obsidian-sample-plugin",
+	"name": "obsidian-safe-filenames",
 	"version": "1.0.0",
-	"description": "This is a sample plugin for Obsidian (https://obsidian.md)",
+	"description": "Obsidian plugin to prevent renaming files with unsafe characters",
 	"main": "main.js",
 	"scripts": {
 		"dev": "node esbuild.config.mjs",
@@ -9,7 +9,7 @@
 		"version": "node version-bump.mjs && git add manifest.json versions.json"
 	},
 	"keywords": [],
-	"author": "",
+	"author": "xenofem",
 	"license": "MIT",
 	"devDependencies": {
 		"@types/node": "^16.11.6",
diff --git a/styles.css b/styles.css
deleted file mode 100644
index 71cc60f..0000000
--- a/styles.css
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
-
-This CSS file will be included with your plugin, and
-available in the app when your plugin is enabled.
-
-If your plugin does not need CSS, delete this file.
-
-*/