diff --git a/main.ts b/main.ts
index 4035324..7ff1eea 100644
--- a/main.ts
+++ b/main.ts
@@ -1,42 +1,15 @@
 import { BrowserCanvasFactory } from "utils/canvas/canvasFactory";
 import {
-	App,
 	Editor,
 	MarkdownView,
 	Notice,
 	Plugin,
-	PluginSettingTab,
-	Setting,
 	TFile,
 	loadPdfJs,
-	normalizePath,
 } from "obsidian";
 import { v4 as uuidv4 } from "uuid";
-import { FolderSuggest } from "utils/suggest/folderSuggest";
-
-interface PdfPrinterSettings {
-	imageFolder: string;
-	imageQuality: number;
-	imageEmbedFormat: string;
-	preservePdfLink: boolean;
-}
-
-const DEFAULT_SETTINGS: PdfPrinterSettings = {
-	imageFolder: "",
-	imageQuality: 0.5,
-	imageEmbedFormat: "![[${filename}]]",
-	preservePdfLink: false,
-};
-
-type PdfDocumentBuffer = {
-	fileName: string;
-	pages: PdfPage[];
-};
-
-type PdfPage = {
-	pageNumber: number;
-	buffer: ArrayBuffer;
-};
+import { DEFAULT_SETTINGS, PdfPrinterSettingsTab } from "modules/settings";
+import { PdfDocumentBuffer, PdfPage, PdfPrinterSettings } from "modules/types";
 
 export default class PdfPrinterPlugin extends Plugin {
 	settings: PdfPrinterSettings;
@@ -90,8 +63,6 @@ export default class PdfPrinterPlugin extends Plugin {
 		this.addSettingTab(new PdfPrinterSettingsTab(this.app, this));
 	}
 
-	onunload() {}
-
 	async loadSettings() {
 		this.settings = Object.assign(
 			{},
@@ -235,74 +206,3 @@ export default class PdfPrinterPlugin extends Plugin {
 		return Promise.all(writeTasks);
 	}
 }
-
-class PdfPrinterSettingsTab extends PluginSettingTab {
-	plugin: PdfPrinterPlugin;
-
-	constructor(app: App, plugin: PdfPrinterPlugin) {
-		super(app, plugin);
-		this.plugin = plugin;
-	}
-
-	display(): void {
-		const { containerEl } = this;
-		containerEl.empty();
-
-		new Setting(containerEl)
-			.setName("Image quality")
-			.setDesc(
-				"Quality of the printed images. Higher values result in better quality but larger file sizes."
-			)
-			.addSlider((cb) => {
-				cb.setLimits(0, 1, 0.01)
-					.setValue(this.plugin.settings.imageQuality)
-					.setDynamicTooltip()
-					.onChange(async (value) => {
-						this.plugin.settings.imageQuality = value;
-						await this.plugin.saveSettings();
-					});
-			});
-
-		new Setting(this.containerEl)
-			.setName("Printed image folder path")
-			.setDesc("Place printed images from PDFs in this folder.")
-			.addSearch((cb) => {
-				new FolderSuggest(this.app, cb.inputEl);
-				cb.setPlaceholder("Example: folder1/folder2")
-					.setValue(this.plugin.settings.imageFolder)
-					.onChange(async (new_folder) => {
-						this.plugin.settings.imageFolder =
-							normalizePath(new_folder);
-						await this.plugin.saveSettings();
-					});
-			});
-
-		new Setting(this.containerEl)
-			.setName("Show link to original PDF above printed images")
-			.setDesc(
-				"Keep a link to the original PDF above the printed images as a reference."
-			)
-			.addToggle((cb) => {
-				cb.setValue(this.plugin.settings.preservePdfLink).onChange(
-					async (value) => {
-						this.plugin.settings.preservePdfLink = value;
-						await this.plugin.saveSettings();
-					}
-				);
-			});
-
-		new Setting(this.containerEl)
-			.setName("Image embed format")
-			.setDesc(
-				"Format for embedding images in the markdown file. Use ${filename} as a placeholder for the image file name."
-			)
-			.addText((cb) => {
-				cb.setPlaceholder("![[${filename}]]")
-					.setValue(this.plugin.settings.imageEmbedFormat)
-					.onChange(async (value) => {
-						this.plugin.settings.imageEmbedFormat = value;
-						await this.plugin.saveSettings();
-					});
-			});
-	}
-}
diff --git a/modules/settings.ts b/modules/settings.ts
new file mode 100644
index 0000000..7c41d5e
--- /dev/null
+++ b/modules/settings.ts
@@ -0,0 +1,82 @@
+import PdfPrinterPlugin from "main";
+import { PluginSettingTab, App, Setting, normalizePath } from "obsidian";
+import { FolderSuggest } from "utils/suggest/folderSuggest";
+import { PdfPrinterSettings } from "./types";
+
+export const DEFAULT_SETTINGS: PdfPrinterSettings = {
+	imageFolder: "",
+	imageQuality: 0.5,
+	imageEmbedFormat: "![[${filename}]]",
+	preservePdfLink: false,
+};
+
+export class PdfPrinterSettingsTab extends PluginSettingTab {
+	plugin: PdfPrinterPlugin;
+
+	constructor(app: App, plugin: PdfPrinterPlugin) {
+		super(app, plugin);
+		this.plugin = plugin;
+	}
+
+	display(): void {
+		const { containerEl } = this;
+		containerEl.empty();
+
+		new Setting(containerEl)
+			.setName("Image quality")
+			.setDesc(
+				"Quality of the printed images. Higher values result in better quality but larger file sizes."
+			)
+			.addSlider((cb) => {
+				cb.setLimits(0, 1, 0.01)
+					.setValue(this.plugin.settings.imageQuality)
+					.setDynamicTooltip()
+					.onChange(async (value) => {
+						this.plugin.settings.imageQuality = value;
+						await this.plugin.saveSettings();
+					});
+			});
+
+		new Setting(this.containerEl)
+			.setName("Printed image folder path")
+			.setDesc("Place printed images from PDFs in this folder.")
+			.addSearch((cb) => {
+				new FolderSuggest(this.app, cb.inputEl);
+				cb.setPlaceholder("Example: folder1/folder2")
+					.setValue(this.plugin.settings.imageFolder)
+					.onChange(async (new_folder) => {
+						this.plugin.settings.imageFolder =
+							normalizePath(new_folder);
+						await this.plugin.saveSettings();
+					});
+			});
+
+		new Setting(this.containerEl)
+			.setName("Show link to original PDF above printed images")
+			.setDesc(
+				"Keep a link to the original PDF above the printed images as a reference."
+			)
+			.addToggle((cb) => {
+				cb.setValue(this.plugin.settings.preservePdfLink).onChange(
+					async (value) => {
+						this.plugin.settings.preservePdfLink = value;
+						await this.plugin.saveSettings();
+					}
+				);
+			});
+
+		new Setting(this.containerEl)
+			.setName("Image embed format")
+			.setDesc(
+				"Format for embedding images in the markdown file. Use ${filename} as a placeholder for the image file name."
+			)
+			.addText((cb) => {
+				cb.setPlaceholder("![[${filename}]]")
+					.setValue(this.plugin.settings.imageEmbedFormat)
+					.onChange(async (value) => {
+						this.plugin.settings.imageEmbedFormat = value;
+						await this.plugin.saveSettings();
+					});
+			});
+	}
+}
diff --git a/modules/types.ts b/modules/types.ts
new file mode 100644
index 0000000..807e4d2
--- /dev/null
+++ b/modules/types.ts
@@ -0,0 +1,16 @@
+export interface PdfPrinterSettings {
+	imageFolder: string;
+	imageQuality: number;
+	imageEmbedFormat: string;
+	preservePdfLink: boolean;
+}
+
+export type PdfDocumentBuffer = {
+	fileName: string;
+	pages: PdfPage[];
+};
+
+export type PdfPage = {
+	pageNumber: number;
+	buffer: ArrayBuffer;
+};