# How to highlight and annotate ChatGPT answers > Highlight ChatGPT answers in yellow, green, blue or pink with Kortex, add a note to each, and find every highlight again in one place in your Library. https://www.kortex-notebooklm.com/tutorials/how-to-highlight-and-annotate-chatgpt-answers 1. [Tutorials](/tutorials) 2. How to highlight and annotate ChatGPT answers # How to highlight and annotate ChatGPT answers 2 minutes 5 steps Updated November 10, 2026 ## Quick answer Install Kortex, then select words in a ChatGPT answer and click Highlight in the small bar. Kortex marks them in a colour and keeps the mark when you reload the page. Click a highlight to recolour it, copy it or remove it. Every highlight, with its note, is listed in the Library's Highlights view. ## Watch it first How to highlight and annotate ChatGPT answers Read the transcript Here's how to highlight ChatGPT answers with Kortex, add a note to each, and find them all again in your Library. Open the chat in ChatGPT, and select words in an answer. A small bar appears above them, with Pin, Highlight and Remember. Click Highlight. Kortex marks the words in a colour: yellow, green, blue or pink. The mark stays on the page. Reload the page, and it comes back. Click any highlight on the page. A small menu lets you recolour it, copy it, open it in the Library, or remove it. To add a note, open the Library from the side panel's Chats tab, and click Highlights. Open a highlight's menu, and choose Add a note. The note stays with the highlight, and shows beside it. The Highlights view lists every passage you marked, with its chat and your note. Filter by colour, site or chat. Your highlights are kept on your computer, in your Library. ## What you need - The [Kortex extension](https://chromewebstore.google.com/detail/kortex/hdapplggdhndkblofffknpmnnnnbncbn) in Chrome, Edge or Brave, and signed in - Saving turned on: you clicked Keep my chats in my Library when Kortex asked - A ChatGPT chat with an answer to mark up ## On this page 1. [Select the words you want to mark](#step-1) 2. [Click Highlight](#step-2) 3. [Change, copy or remove a highlight](#step-3) 4. [Add a note to a highlight](#step-4) 5. [Find all your highlights in one place](#step-5) 6. [If it doesn’t work](#trouble) 7. [Questions](#faq) 1. ## Select the words you want to mark Open the chat in ChatGPT and select words in an answer. A small bar appears above them with **Pin**, **Highlight** and **Remember**. [![Selected words in an AI's answer with a small bar above them. The bar has three buttons: Pin, Highlight and Remember.](/images/library/selection.webp)](/images/library/selection.webp) Select text in any answer to pin, highlight or remember it. 2. ## Click Highlight **Highlight** marks the words in a colour: yellow, green, blue or pink. The mark stays on the page. Reload the page and it comes back. 3. ## Change, copy or remove a highlight Click any highlight on the page. A small menu lets you recolour it, copy it, open it in the Library or remove it. 4. ## Add a note to a highlight Open the Library from the side panel's **Chats** tab and click **Highlights**. Open a highlight's ⋯ menu and choose to add or edit a note. The note stays with the highlight and shows beside it. [![A saved Gemini chat open in the Library reader with one line highlighted in yellow, beside the Library's list of views that includes Highlights.](/images/library/all-chats.webp)](/images/library/all-chats.webp) All chats lists every saved chat by day. Open one to read it in full beside the list. 5. ## Find all your highlights in one place The **Highlights** view lists every passage you marked on an AI site, with its chat and your note. Filter by colour, site or chat. A highlight's menu also copies the passage, opens its chat on the site, or removes it. ## If it doesn’t work The Highlight button does not appear Select words inside an AI's answer. Reload the page once if the bar still does not show. Kortex works on ChatGPT, Claude, Gemini, Perplexity and Grok. A highlight is not on the page after I reload Give the page a few seconds to finish loading. Then open the Library's Highlights view to check the highlight was kept. It lists the chat it belongs to, and you can open the chat from there. I marked the wrong words Click the highlight on the page and choose to remove it from the small menu. Then select the right words and click Highlight again. ## Questions people ask Something we missed? [Ask us](#contact). ### Which colours can I use? Yellow, green, blue and pink. You can change a highlight's colour later by clicking it and choosing a new one. ### Does this work on Claude and Gemini too? Yes. Highlights work on ChatGPT, Claude, Gemini, Perplexity and Grok. The Highlights view lists them all together, filtered by site if you like. ### Where are my highlights kept? On your computer, in your Library. ChatGPT itself is not changed. Nothing is sent anywhere unless you send it. ### Can I highlight sources in Gemini Notebook as well? Yes, that is a separate tool. See [how to highlight and annotate NotebookLM (Gemini Notebook) sources](/tutorials/how-to-highlight-and-annotate-notebooklm-sources). ## Keep going [Chat Library Keep your AI chats on your computer and search them, next to your YouTube videos and notebooks.](/features#organize) [Kortex docs The full reference for this feature, with every option.](/docs/chat-library) ### More tutorials - [How to highlight and annotate sources in NotebookLM](/tutorials/how-to-highlight-and-annotate-notebooklm-sources) - [How to pin important ChatGPT messages](/tutorials/how-to-pin-important-chatgpt-messages) - [How to add notes to ChatGPT conversations](/tutorials/how-to-add-notes-to-chatgpt-conversations) - [How to add YouTube videos and playlists to NotebookLM](/tutorials/how-to-add-youtube-videos-to-notebooklm) [All tutorials](/tutorials) ## Do it on your own notebooks. Install the Kortex extension and follow these steps on a notebook you already have. [Add to Chrome](https://chromewebstore.google.com/detail/kortex/hdapplggdhndkblofffknpmnnnnbncbn) 100,000+ users, rated 4.5 on the Chrome Web Store.