diff --git a/README.md b/README.md
index 0af0dd3..8d8060c 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,11 @@
 # GitHub Stories
 
-View stories on your GitHub dashboard.
+View stories on your GitHub dashboard and open a lightweight chat panel on any GitHub page.
 
 No uploads required. Just [install](#how-to-install) and visit [github.com](https://github.com).
 
+The chat button appears in the lower-right corner on `github.com/*` pages. Open it to write page-specific notes, then hide it again without leaving GitHub.
+
 ![GitHub Stories Demo](./github-stories.gif)
 
 ## How to Install
diff --git a/content-script.js b/content-script.js
index 78cdb14..230b0aa 100644
--- a/content-script.js
+++ b/content-script.js
@@ -31,6 +31,100 @@ const UPDATE_PROGRESS_BAR_VALUE =
   time / (AUTOMATIC_SCROLL_DELAY / PROGRESS_BAR_UPDATE_DELAY - 5);
 let storyViewOpen = false;
 
+initGithubChat();
+
+function initGithubChat() {
+  if (window.top !== window || document.getElementById('github-chat-root')) {
+    return;
+  }
+
+  const chatRoot = document.createElement('div');
+  chatRoot.id = 'github-chat-root';
+  chatRoot.innerHTML = `
+    <button class="github-chat-toggle" type="button" aria-expanded="false" aria-controls="github-chat-panel">
+      Chat
+    </button>
+    <section id="github-chat-panel" class="github-chat-panel hidden" aria-label="GitHub chat">
+      <header class="github-chat-header">
+        <strong>GitHub Chat</strong>
+        <button class="github-chat-close" type="button" aria-label="Close GitHub chat">×</button>
+      </header>
+      <div class="github-chat-messages" role="log" aria-live="polite"></div>
+      <form class="github-chat-form">
+        <input class="github-chat-input" type="text" placeholder="Message about this GitHub page..." autocomplete="off" />
+        <button class="github-chat-send" type="submit">Send</button>
+      </form>
+    </section>
+  `;
+
+  document.documentElement.appendChild(chatRoot);
+
+  const toggle = chatRoot.querySelector('.github-chat-toggle');
+  const panel = chatRoot.querySelector('.github-chat-panel');
+  const close = chatRoot.querySelector('.github-chat-close');
+  const form = chatRoot.querySelector('.github-chat-form');
+  const input = chatRoot.querySelector('.github-chat-input');
+  const messages = chatRoot.querySelector('.github-chat-messages');
+
+  const pageKey = `github-chat:${location.pathname}`;
+  const savedMessages = loadChatMessages(pageKey);
+  renderChatMessages(messages, savedMessages);
+
+  toggle.addEventListener('click', () => {
+    const isHidden = panel.classList.toggle('hidden');
+    toggle.setAttribute('aria-expanded', String(!isHidden));
+    if (!isHidden) input.focus();
+  });
+
+  close.addEventListener('click', () => {
+    panel.classList.add('hidden');
+    toggle.setAttribute('aria-expanded', 'false');
+    toggle.focus();
+  });
+
+  form.addEventListener('submit', (event) => {
+    event.preventDefault();
+    const text = input.value.trim();
+    if (!text) return;
+
+    const nextMessages = [
+      ...loadChatMessages(pageKey),
+      { text, createdAt: new Date().toISOString() },
+    ];
+    saveChatMessages(pageKey, nextMessages);
+    renderChatMessages(messages, nextMessages);
+    input.value = '';
+  });
+}
+
+function loadChatMessages(pageKey) {
+  try {
+    return JSON.parse(localStorage.getItem(pageKey) || '[]');
+  } catch (error) {
+    return [];
+  }
+}
+
+function saveChatMessages(pageKey, messages) {
+  localStorage.setItem(pageKey, JSON.stringify(messages.slice(-50)));
+}
+
+function renderChatMessages(container, messages) {
+  if (messages.length === 0) {
+    container.innerHTML = '<p class="github-chat-empty">No messages yet.</p>';
+    return;
+  }
+
+  container.innerHTML = '';
+  messages.forEach((message) => {
+    const item = document.createElement('div');
+    item.className = 'github-chat-message';
+    item.innerText = message.text;
+    container.appendChild(item);
+  });
+  container.scrollTop = container.scrollHeight;
+}
+
 function getActionFullText(element){
   let fullText = '';
 
diff --git a/manifest.json b/manifest.json
index db0a183..e12f406 100644
--- a/manifest.json
+++ b/manifest.json
@@ -17,8 +17,7 @@
   "content_scripts": [
     {
       "matches": [
-        "https://github.com/",
-        "https://github.com/orgs/*"
+        "https://github.com/*"
       ],
       "js": [
         "content-script.js"
diff --git a/story-list.css b/story-list.css
index e33df07..e36fc47 100644
--- a/story-list.css
+++ b/story-list.css
@@ -53,3 +53,101 @@ img.user-story-img {
   border-radius: 50%;
   width: 56px;
 }
+
+#github-chat-root {
+  position: fixed;
+  right: 24px;
+  bottom: 24px;
+  z-index: 99999;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
+}
+
+.github-chat-toggle {
+  background: #2da44e;
+  border: 0;
+  border-radius: 999px;
+  box-shadow: 0 8px 24px rgba(27, 31, 36, 0.24);
+  color: #ffffff;
+  cursor: pointer;
+  font-weight: 600;
+  min-height: 44px;
+  padding: 0 18px;
+}
+
+.github-chat-panel {
+  background: #ffffff;
+  border: 1px solid #d0d7de;
+  border-radius: 8px;
+  bottom: 56px;
+  box-shadow: 0 16px 48px rgba(27, 31, 36, 0.2);
+  color: #24292f;
+  display: flex;
+  flex-direction: column;
+  height: min(440px, calc(100vh - 120px));
+  overflow: hidden;
+  position: absolute;
+  right: 0;
+  width: min(360px, calc(100vw - 32px));
+}
+
+.github-chat-header {
+  align-items: center;
+  border-bottom: 1px solid #d0d7de;
+  display: flex;
+  justify-content: space-between;
+  padding: 12px 14px;
+}
+
+.github-chat-close {
+  background: transparent;
+  border: 0;
+  color: #57606a;
+  cursor: pointer;
+  font-size: 22px;
+  line-height: 1;
+}
+
+.github-chat-messages {
+  flex: 1;
+  overflow-y: auto;
+  padding: 14px;
+}
+
+.github-chat-empty {
+  color: #57606a;
+  margin: 0;
+}
+
+.github-chat-message {
+  background: #f6f8fa;
+  border: 1px solid #d8dee4;
+  border-radius: 8px;
+  margin-bottom: 8px;
+  padding: 8px 10px;
+  white-space: pre-wrap;
+}
+
+.github-chat-form {
+  border-top: 1px solid #d0d7de;
+  display: flex;
+  gap: 8px;
+  padding: 10px;
+}
+
+.github-chat-input {
+  border: 1px solid #d0d7de;
+  border-radius: 6px;
+  flex: 1;
+  min-width: 0;
+  padding: 8px;
+}
+
+.github-chat-send {
+  background: #0969da;
+  border: 0;
+  border-radius: 6px;
+  color: #ffffff;
+  cursor: pointer;
+  font-weight: 600;
+  padding: 0 12px;
+}