diff --git a/src/lib/MarkdownViewer.svelte b/src/lib/MarkdownViewer.svelte
index 3df725e..ea9be16 100644
--- a/src/lib/MarkdownViewer.svelte
+++ b/src/lib/MarkdownViewer.svelte
@@ -103,7 +103,7 @@ import { t } from './utils/i18n.js';
 
 	// derived from tab manager
 	let currentFile = $derived(tabManager.activeTab?.path ?? '');
-	let isMarkdown = $derived(['md', 'markdown', 'mdown', 'mkd'].includes(currentFile.split('.').pop()?.toLowerCase() || ''));
+	let isMarkdown = $derived(['md', 'markdown', 'mdown', 'mkd', 'txt'].includes(currentFile.split('.').pop()?.toLowerCase() || ''));
 	let editorLanguage = $derived(getLanguage(currentFile));
 	let htmlContent = $derived(tabManager.activeTab?.content ?? '');
 	let sanitizedHtml = $derived(DOMPurify.sanitize(htmlContent));
@@ -453,7 +453,7 @@ import { t } from './utils/i18n.js';
 			if (!activeId) return;
 
 			const ext = filePath.split('.').pop()?.toLowerCase();
-			const isMarkdown = ['md', 'markdown', 'mdown', 'mkd'].includes(ext || '');
+			const isMarkdown = ['md', 'markdown', 'mdown', 'mkd', 'txt'].includes(ext || '');
 			const tab = tabManager.tabs.find((t) => t.id === activeId);
 
 			if (isMarkdown) {
@@ -1510,7 +1510,7 @@ import { t } from './utils/i18n.js';
 			if (!rawHref) return;
 
 			if (rawHref.startsWith('#')) return;
-			const isMarkdown = ['.md', '.markdown', '.mdown', '.mkd'].some((ext) => {
+			const isMarkdown = ['.md', '.markdown', '.mdown', '.mkd', '.txt'].some((ext) => {
 				const urlNoHash = rawHref.split('#')[0].split('?')[0];
 				return urlNoHash.toLowerCase().endsWith(ext);
 			});
diff --git a/src/lib/components/TitleBar.svelte b/src/lib/components/TitleBar.svelte
index ed4c670..249b9d9 100644
--- a/src/lib/components/TitleBar.svelte
+++ b/src/lib/components/TitleBar.svelte
@@ -190,22 +190,22 @@
 			if (currentFile) list.push('open_loc');
 
 			const ext = currentFile ? currentFile.split('.').pop()?.toLowerCase() || '' : 'md';
-			const isMarkdown = ['md', 'markdown', 'mdown', 'mkd'].includes(ext);
+			const isMarkdown = ['md', 'markdown', 'mdown', 'mkd', 'txt'].includes(ext);
 
 			if (isMarkdown) {
 				list.push('toc');
 				list.push('fullWidth');
-				if (!tabManager.activeTab?.isSplit) {
-					if (!isEditing && currentFile) {
-						list.push('live');
-					}
-					list.push('edit');
+				if (!tabManager.activeTab?.isSplit && !isEditing && currentFile) {
+					list.push('live');
 				}
 				if (tabManager.activeTab?.isSplit) {
 					list.push('sync');
 				}
 				list.push('split');
 			}
+			if (isMarkdown && !tabManager.activeTab?.isSplit) {
+				list.push('edit');
+			}
 			list.push('zen');
 			list.push('tabs');
 		}