diff --git a/index.html b/index.html
index 03213c2..1723c4d 100644
--- a/index.html
+++ b/index.html
@@ -275,6 +275,7 @@ footer .footer-track { flex: 1; min-width: 0; white-space: nowrap; overflow: hid
   <div id="tagEditorModal">
     <h3>Edit Tags</h3>
     <div class="tag-editor-fields">
+      <label>Filename <input type="text" id="tagFilename" readonly onfocus="this.select()"></label>
       <label>Name <input type="text" id="tagName"></label>
       <label>Artist <input type="text" id="tagArtist"></label>
       <label>Album <input type="text" id="tagAlbum"></label>
@@ -782,6 +783,7 @@ const peakHoldSelect = document.getElementById('peakHoldSelect');
 const crossfadeSelect = document.getElementById('crossfadeSelect');
 const infoBtn = document.getElementById('infoBtn');
 const tagEditorOverlay = document.getElementById('tagEditorOverlay');
+const tagFilename = document.getElementById('tagFilename');
 const tagName = document.getElementById('tagName');
 const tagArtist = document.getElementById('tagArtist');
 const tagAlbum = document.getElementById('tagAlbum');
@@ -1321,6 +1323,7 @@ function openTagEditor() {
   if (idx < 0) { showStatus('No track selected.', 'error'); return; }
   const t = tracks[idx];
   tagEditorOverlay.dataset.idx = idx;
+  tagFilename.value = t.filename || '';
   tagName.value = t.name || '';
   tagArtist.value = t.artist || '';
   tagAlbum.value = t.album || '';