diff --git a/src/renderer/components/Toolbar/AnalysisToolbar.tsx b/src/renderer/components/Toolbar/AnalysisToolbar.tsx
index 5863dac..2b44b57 100644
--- a/src/renderer/components/Toolbar/AnalysisToolbar.tsx
+++ b/src/renderer/components/Toolbar/AnalysisToolbar.tsx
@@ -340,8 +340,11 @@ export function AnalysisToolbar(): JSX.Element {
           </span>
         )}
         {activeFilePath && (
-          <span className="toolbar-filename">
-            {activeFilePath.split('/').pop()?.replace(/\.md$/, '')}
+          <span className="toolbar-filename" title={activeFilePath.split('/').pop()?.replace(/\.md$/, '')}>
+            {(() => {
+              const name = activeFilePath.split('/').pop()?.replace(/\.md$/, '') ?? ''
+              return name.length > 30 ? name.slice(0, 30) + '…' : name
+            })()}
           </span>
         )}
       </div>
diff --git a/src/renderer/components/Toolbar/Toolbar.css b/src/renderer/components/Toolbar/Toolbar.css
index 78ba1e0..45ce45d 100644
--- a/src/renderer/components/Toolbar/Toolbar.css
+++ b/src/renderer/components/Toolbar/Toolbar.css
@@ -22,6 +22,7 @@
   align-items: center;
   gap: 10px;
   overflow: hidden;
+  flex-shrink: 0;
 }
 
 .toolbar-btn {
@@ -93,7 +94,7 @@
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
-  max-width: 260px;
+  width: 180px;
 }
 
 .toolbar-fontsize {