diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index 0ae31f7..2f342e0 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -1078,7 +1078,7 @@
       <section class="recorder-section">
         <h3 class="recorder-section-heading">Recorded files</h3>
         <div class="recorder-filter-bar">
-          <input id="recorder-filter" type="text" class="status-input recorder-filter-input" placeholder="Filter by filename..." />
+          <input id="recorder-filter" type="text" class="status-input recorder-filter-input" placeholder="Filter by rig, freq, mode or date..." title="Filter recordings by filename — supports partial match (e.g. rig name, frequency, mode, date)" />
           <select id="recorder-sort" class="status-input recorder-sort-select">
             <option value="name-desc">Newest first</option>
             <option value="name-asc">Oldest first</option>