diff --git a/pikit-web/index.html b/pikit-web/index.html
index 507cbe4..cfcb1f9 100644
--- a/pikit-web/index.html
+++ b/pikit-web/index.html
@@ -118,10 +118,10 @@
           </button>
         </div>
         <div class="control-actions wrap gap">
-          <button id="diagRefreshBtn" class="ghost">Refresh</button>
-          <button id="diagClearBtn" class="ghost">Clear</button>
-          <button id="diagCopyBtn" class="ghost">Copy</button>
-          <button id="diagDownloadBtn" class="ghost">Download</button>
+          <button id="diagRefreshBtn" class="ghost" title="Refresh diagnostics log">Refresh</button>
+          <button id="diagClearBtn" class="ghost" title="Clear diagnostics log">Clear</button>
+          <button id="diagCopyBtn" class="ghost" title="Copy diagnostics to clipboard">Copy</button>
+          <button id="diagDownloadBtn" class="ghost" title="Download diagnostics as text">Download</button>
           <span id="diagStatusModal" class="hint quiet"></span>
         </div>
         <pre id="diagLogBox" class="log-box" aria-live="polite"></pre>
@@ -276,6 +276,7 @@
               type="text"
               id="svcName"
               placeholder="Service name"
+              title="Service name"
               maxlength="32"
             />
             <p class="hint quiet">Service name: max 32 characters.</p>
@@ -285,11 +286,13 @@
               placeholder="Port (e.g. 8080)"
               min="1"
               max="65535"
+              title="Service port"
             />
             <input
               type="text"
               id="svcPath"
               placeholder="Optional path (e.g. /admin)"
+              title="Optional path (e.g. /admin)"
             />
             <div class="control-row split">
               <label class="checkbox-row">
@@ -308,11 +311,13 @@
               id="svcNotice"
               rows="3"
               placeholder="Optional notice (shown on card)"
+              title="Optional notice shown on the service card"
             ></textarea>
             <input
               type="text"
               id="svcNoticeLink"
               placeholder="Optional link for more info"
+              title="Optional link for more info"
             />
             <div class="control-actions">
               <button id="svcAddBtn" title="Add service and open port on LAN">