diff --git a/options/options.html b/options/options.html
index 3618a20..ddc5ee0 100644
--- a/options/options.html
+++ b/options/options.html
@@ -154,6 +154,11 @@
                             <input type="checkbox" id="token-reduction"> Aggressive token reduction
                         </label>
                     </div>
+                    <div class="field">
+                        <label class="checkbox">
+                            <input type="checkbox" id="show-debug-tab"> Show debug information
+                        </label>
+                    </div>
                     <div class="field">
                         <label class="label" for="max_tokens">Max tokens</label>
                         <div class="control">
@@ -220,11 +225,6 @@
                             <input class="input" type="number" step="0.01" id="tfs">
                         </div>
                     </div>
-                    <div class="field">
-                        <label class="checkbox">
-                            <input type="checkbox" id="show-debug-tab"> Advanced Options
-                        </label>
-                    </div>
                 </div>
             </div>
 
@@ -290,7 +290,10 @@
                     <span>Debug</span>
                 </h2>
                 <pre id="payload-display"></pre>
-                <div id="diff-display" class="mt-4"></div>
+                <div id="diff-container" class="mt-4 is-hidden">
+                    <label class="label">Prompt diff</label>
+                    <div id="diff-display" class="box content is-family-monospace"></div>
+                </div>
             </div>
         </div>
     </section>
diff --git a/options/options.js b/options/options.js
index 3402dcf..d881d6a 100644
--- a/options/options.js
+++ b/options/options.js
@@ -70,6 +70,7 @@ document.addEventListener('DOMContentLoaded', async () => {
     await applyTheme(themeSelect.value);
     const payloadDisplay = document.getElementById('payload-display');
     const diffDisplay = document.getElementById('diff-display');
+    const diffContainer = document.getElementById('diff-container');
 
     let lastFullText = defaults.lastFullText || '';
     let lastPromptText = defaults.lastPromptText || '';
@@ -83,7 +84,16 @@ document.addEventListener('DOMContentLoaded', async () => {
         dmp.Diff_EditCost = 4;
         const diffs = dmp.diff_main(lastFullText, lastPromptText);
         dmp.diff_cleanupEfficiency(diffs);
-        diffDisplay.innerHTML = dmp.diff_prettyHtml(diffs);
+        const hasDiff = diffs.some(d => d[0] !== 0);
+        if (hasDiff) {
+            diffDisplay.innerHTML = dmp.diff_prettyHtml(diffs);
+            diffContainer.classList.remove('is-hidden');
+        } else {
+            diffDisplay.innerHTML = '';
+            diffContainer.classList.add('is-hidden');
+        }
+    } else {
+        diffContainer.classList.add('is-hidden');
     }
     themeSelect.addEventListener('change', async () => {
         markDirty();
@@ -751,9 +761,17 @@ document.addEventListener('DOMContentLoaded', async () => {
                         dmp.Diff_EditCost = 4;
                         const diffs = dmp.diff_main(lastFullText, lastPromptText);
                         dmp.diff_cleanupEfficiency(diffs);
-                        diffDisplay.innerHTML = dmp.diff_prettyHtml(diffs);
+                        const hasDiff = diffs.some(d => d[0] !== 0);
+                        if (hasDiff) {
+                            diffDisplay.innerHTML = dmp.diff_prettyHtml(diffs);
+                            diffContainer.classList.remove('is-hidden');
+                        } else {
+                            diffDisplay.innerHTML = '';
+                            diffContainer.classList.add('is-hidden');
+                        }
                     } else {
                         diffDisplay.innerHTML = '';
+                        diffContainer.classList.add('is-hidden');
                     }
                 }
             }