How-to tutorials for AI chats and NotebookLM.
Kortex helps with your ChatGPT, Claude, Gemini, Perplexity and Grok chats, and with Gemini Notebook (formerly NotebookLM). Each tutorial starts with the answer, then shows the steps. Most take a few minutes.
Save AI chats
- Save AI chats How to keep your ChatGPT chat history if chats are deleted Worried your ChatGPT chat history will disappear? Kortex saves a copy of each chat on your computer, and a chat deleted on ChatGPT stays in your Library. 2 minutes
- Save AI chats How to recover deleted ChatGPT chats (what is possible) OpenAI says a deleted ChatGPT chat cannot be restored. Here is how to check if it is only archived, locked or missing, and what to do if it is truly gone. 10 minutes
- Save AI chats How to save ChatGPT conversations on your computer Save every ChatGPT conversation on your own computer with Kortex. Say yes once and new chats save themselves. Search, read and download any chat. 2 minutes
Search AI chats
- Search AI chats How to search all your AI chats in one place AI chat history search for ChatGPT, Claude, Gemini, Perplexity and Grok. Kortex saves every chat on your computer, then finds any of them in one search. 3 minutes
- Search AI chats How to search ChatGPT conversations and chat history Search your saved ChatGPT conversations by words, meaning or date with the Kortex Library. Find old chats in seconds, even a half-remembered one. 2 minutes
- Search AI chats How to search Claude chats and find an old conversation Search your saved Claude chats by words, meaning or date with the Kortex Library. Find an old Claude conversation fast, beside your ChatGPT chats. 2 minutes
Export AI chats
- Export AI chats How to export a ChatGPT conversation to Markdown Export a ChatGPT conversation to a Markdown file with Kortex. Click Download as Markdown on a saved chat, or keep a Markdown copy of every chat in a folder. 1 minute
- Export AI chats How to export a ChatGPT conversation to PDF Export any ChatGPT conversation to a PDF file with Kortex. Open the saved chat, click the menu and choose Download as PDF. The file saves on your computer. 1 minute
- Export AI chats How to export a Claude conversation to PDF Export a Claude conversation to PDF or Markdown with Kortex. Open the saved chat, choose Download as PDF from its menu, and the file saves on your computer. 1 minute
- Export AI chats How to export a Gemini chat to PDF, Markdown or Google Docs Export a Gemini chat with Kortex: download it as PDF or Markdown, or open it in a new Google Doc. Kortex saves your Gemini chats on your computer first. 2 minutes
- Export AI chats How to export a Perplexity thread to PDF or Markdown Export a Perplexity thread to PDF or Markdown with Kortex. Keep a Perplexity tab open so Kortex saves it, then download the thread from the Library. 2 minutes
- Export AI chats How to export ChatGPT chat history (full data export) Export your ChatGPT chat history from Settings, Data controls. ChatGPT emails a link to a ZIP file. See how long it takes and what to do if it's late. 5 minutes, plus waiting for the email
- Export AI chats How to export Claude chat history (Claude's built-in export) Export your Claude chat history with Claude's own data export: Settings, Privacy, Export data. See what you get, how long the link lasts and the limits. 3 minutes
- Export AI chats How to export Gemini chat to Google Docs Export a Gemini response to Google Docs with Share & export, then Export to Docs. Also covers Gmail, Sheets tables, and downloading all your Gemini data. 2 minutes
- Export AI chats How to save ChatGPT chats to Notion Send a ChatGPT chat to a Notion page with Kortex. Click Save to Notion on a saved chat; the page gets the messages, your note, pins and highlights. 3 minutes
- Export AI chats How to save ChatGPT chats to Obsidian as Markdown files Keep every ChatGPT chat as a Markdown file in your Obsidian vault with Kortex. Choose a folder once and Kortex updates each file when the chat changes. 3 minutes
Organize AI chats
- Organize AI chats How to organize ChatGPT chats into folders Sort your ChatGPT chats into folders with the Kortex Chat Library. Make a folder, file chats by drag and drop, and keep Claude and Gemini chats beside them. 3 minutes
- Organize AI chats How to tag ChatGPT conversations Add tags to your ChatGPT conversations with Kortex, then filter your Library by tag. One tag works on chats from ChatGPT, Claude, Gemini and Perplexity. 2 minutes
Manage AI chats
- Manage AI chats ChatGPT custom instructions: how to set them up Set ChatGPT custom instructions in Settings, Personalization. See the character limits, how to turn them off, and what they do and do not change. 3 minutes
- Manage AI chats ChatGPT temporary chat: how to start one and what it does Start a ChatGPT temporary chat that stays out of your history. See what Personalized and Unpersonalized mean, how to save one, and how long it's kept. 1 minute
- Manage AI chats How to archive ChatGPT chats and find them again Archive a ChatGPT chat to clear your sidebar without deleting it. See how to find archived chats, unarchive them, or archive every chat at once. 1 minute
- Manage AI chats How to continue a ChatGPT conversation in a new chat Chat too long or full? Start a new ChatGPT chat and carry over the key facts. Use a summary, a Project, or Kortex to bring the old chat's context along. 5 minutes
- Manage AI chats How to delete ChatGPT history (one chat or all chats) Delete one ChatGPT chat or your whole history from the sidebar or Settings. See what deleting removes, how long it takes, and why it can't be undone. 2 minutes
- Manage AI chats How to delete Claude chats: one, many or all at once Delete a Claude chat on the web, iPhone or Android, or delete many at once. See what happens to your data, memory and projects, and how to keep a copy first. 2 minutes
- Manage AI chats How to delete Gemini history: one chat, a day or all time Delete Gemini history on the web: one chat, a day, a custom range or all time. See what stays, and how to set auto-delete or turn off Keep Activity. 3 minutes
- Manage AI chats How to delete Perplexity history: one thread, many or all Delete Perplexity history from the History page: one session, several, or all of them. Also how to clear memories, delete a Project and remove uploaded files. 3 minutes
- Manage AI chats How to search Gemini chat history and find an old chat Search your Gemini chat history with the Search option in the side panel, or ask Gemini about past chats by topic or time. Steps and what you need first. 2 minutes
- Manage AI chats How to share a ChatGPT conversation with a link Share a ChatGPT conversation with a link in a few clicks. See what the other person can see, how to update or delete the link, and what stays private. 2 minutes
- Manage AI chats How to share a Claude chat: public link or invite by email Share a Claude chat with a public link or invite people by email. See what viewers can see, how to update the chat later and how to stop sharing. 2 minutes
- Manage AI chats How to turn off ChatGPT memory (and delete saved memories) Turn off ChatGPT memory in Settings, Personalization. See what ChatGPT remembers, delete saved memories, and what turning memory off doesn't delete. 3 minutes
- Manage AI chats How to upload a PDF to ChatGPT and ask questions about it Upload a PDF to ChatGPT with the plus button, then ask for a summary or answers. See file size limits, upload caps, and what to do if the upload fails. 2 minutes
- Manage AI chats How to use ChatGPT Projects to keep chats and files together Learn how to use ChatGPT Projects: create one, add files and instructions, move old chats in, and choose a memory setting. Includes file limits by plan. 5 minutes
- Manage AI chats How to use Claude memory: turn it on or off Turn Claude memory on or off, see what Claude remembers, edit or delete topics, and switch memory off for one chat. Steps from Anthropic's help center. 3 minutes
- Manage AI chats How to use Claude Projects, step by step Set up a Claude Project in minutes: create it, add files and instructions, then chat inside it. Includes memory, moving chats, starring and archiving. 5 minutes
- Manage AI chats How to use Perplexity Spaces (now called Projects) Perplexity Spaces are now Projects. Create one, add instructions and files, share it and keep your searches together. Steps from Perplexity's help center. 5 minutes
- Manage AI chats Where is Gemini chat history? How to find your past chats Find your Gemini chat history in the side panel under Recent, or in Gemini Apps Activity. Steps for the web, plus why chats can go missing. 2 minutes
Move between AIs
- Move between AIs How to move a ChatGPT conversation to Claude Move a ChatGPT conversation to Claude with Kortex. Continue in another AI builds a handoff pack, you edit it, and Claude opens with it in the chat box. 3 minutes
- Move between AIs How to reference another chat in ChatGPT Bring an old chat into a new ChatGPT message with Kortex. Type ;ref, pick a chat from ChatGPT, Claude, Gemini or Perplexity, and it goes in with a link back. 1 minute
- Move between AIs How to switch from ChatGPT to Claude: what to bring over Switch from ChatGPT to Claude and bring your memory, custom instructions, key chats and prompts. A plain checklist with the steps for each part. 20 minutes
- Move between AIs How to transfer ChatGPT memory to Claude (with Kortex) Kortex cannot import ChatGPT's built-in memory. It keeps your own facts in Kortex Memory, and ;me puts them into Claude or Gemini. Here is how it works. 5 minutes
Highlights and notes
- Highlights and notes How to add notes to ChatGPT conversations Add a note to any ChatGPT conversation with Kortex. Type it in the Kortex tab, and read every note again in your Library, next to chats from Claude and Gemini. 1 minute
- Highlights and notes 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. 2 minutes
- Highlights and notes How to pin important ChatGPT messages Pin the ChatGPT answers you want to keep with Kortex. Select the words, click Pin, and find every pin again in your Library, with ChatGPT, Claude and Gemini. 1 minute
- Highlights and notes How to highlight and annotate sources in NotebookLM Color-code NotebookLM (Gemini Notebook) sources and add a private note to each with the Kortex Workspace. 2 minutes
Prompts
- Prompts How to save and reuse ChatGPT prompts (Kortex) Save a ChatGPT prompt once with Kortex, then reuse it by typing ; and a shortcut. The same prompts work in Claude, Gemini and other AI chat boxes. 3 minutes
- Prompts How to save and reuse NotebookLM prompts (Gemini Notebook) Save prompts once with Kortex, then insert them in NotebookLM (Gemini Notebook), ChatGPT or Claude by typing ;shortcut or pressing Cmd/Ctrl+Shift+P. 3 minutes
- Prompts How to use prompt variables in ChatGPT Add blanks like {{topic}} to a saved prompt with Kortex, fill them in each time, and use the prompt in ChatGPT, Claude or Gemini with a ; shortcut. 4 minutes
- Prompts How to write a good ChatGPT prompt: 5 simple rules Write a good ChatGPT prompt with OpenAI's own advice: be clear and specific, give context, name the tone, split big tasks, and refine step by step. 5 minutes
Import to Gemini Notebook
- Import to Gemini Notebook How to save a ChatGPT chat to NotebookLM (Gemini Notebook) Save any ChatGPT conversation to a NotebookLM (Gemini Notebook) notebook in a few clicks with the Kortex extension. Works on Claude, Gemini and Perplexity too. 1 minute
- Import to Gemini Notebook How to send highlighted text to NotebookLM (Gemini Notebook) Select text on any web page, right-click, and save it to a NotebookLM (Gemini Notebook) notebook with the Kortex extension. The link and date come with it. 1 minute
- Import to Gemini Notebook How to save a full web page as a PDF for NotebookLM Save a whole web page as a PDF with the Kortex extension's Capture as PDF, then add the file to a NotebookLM (Gemini Notebook) notebook as a source. 2 minutes
- Import to Gemini Notebook How to import a Reddit post into NotebookLM Save a Reddit post to a NotebookLM (Gemini Notebook) notebook with the Kortex extension. Its title, author and text become a source you can query. 1 minute
- Import to Gemini Notebook How to add YouTube videos and playlists to NotebookLM Add a YouTube video, playlist, channel or search results to a NotebookLM (Gemini Notebook) notebook in one click with the Kortex extension. 1 minute
- Import to Gemini Notebook How to sync Google Docs in NotebookLM (Gemini Notebook) Refresh every Google Doc source in a NotebookLM (Gemini Notebook) notebook with one click using Sync Google Docs in the Kortex extension. 1 minute
- Import to Gemini Notebook How to bulk import links into NotebookLM (Gemini Notebook) Add many links or all your open tabs to a NotebookLM (Gemini Notebook) notebook at once with Bulk Import in the Kortex extension. 3 minutes
Organize Gemini Notebook
- Organize Gemini Notebook How to organize NotebookLM notebooks into folders Group your NotebookLM (Gemini Notebook) notebooks into color-coded, nested collections with the Kortex extension. Takes a few minutes in the Workspace. 3 minutes
- Organize Gemini Notebook How to tag and label sources in NotebookLM (Gemini Notebook) Add tags to single NotebookLM (Gemini Notebook) sources, tag many at once and filter by tag with the Kortex extension. 2 minutes
- Organize Gemini Notebook How to search across all your NotebookLM notebooks Search every NotebookLM (Gemini Notebook) notebook, source, tag and note from one box with the Kortex extension, using Ctrl+K in the Kortex Workspace. 1 minute
- Organize Gemini Notebook How to merge NotebookLM (Gemini Notebook) notebooks Merge several NotebookLM (Gemini Notebook) notebooks into one new notebook with the Kortex extension. 2 minutes
- Organize Gemini Notebook How to save a notebook template in NotebookLM Save a NotebookLM (Gemini Notebook) notebook's tags and collections as a template with Kortex, then apply the same setup to any other notebook in a click. 3 minutes
- Organize Gemini Notebook How to see all your NotebookLM notebooks in one place Open the Kortex Workspace to see every NotebookLM (Gemini Notebook) notebook in one table, then search, filter, tag and file them. 3 minutes
Export from Gemini Notebook
- Export from Gemini Notebook How to export a NotebookLM (Gemini Notebook) notebook to PDF Export the sources, chat and notes of a NotebookLM (Gemini Notebook) notebook to PDF with the Kortex extension. Markdown, text and ZIP work the same way. 2 minutes
- Export from Gemini Notebook How to export NotebookLM Studio notes, slides and mind maps Download NotebookLM (Gemini Notebook) Studio briefings, slides, mind maps, infographics and Audio Overviews as files with the Kortex extension. 2 minutes
Audio and podcasts
- Audio and podcasts How to download a NotebookLM Audio Overview Generate an Audio Overview from the Kortex Workspace with your own style, depth and instructions, then listen or download it as an .mp4. 3 minutes
- Audio and podcasts How to listen to NotebookLM Audio Overviews as a podcast Turn NotebookLM (Gemini Notebook) Audio Overviews into a private podcast feed with Kortex, then add the feed address to a podcast app and listen anywhere. 5 minutes
Automation
AI assistants and MCP
- AI assistants and MCP How to connect Claude to NotebookLM with Kortex MCP Connect Claude, ChatGPT, Cursor or Codex to your NotebookLM (Gemini Notebook) notebooks with Kortex MCP, using sign-in or an API key. 5 minutes
- AI assistants and MCP How to let Claude search your ChatGPT history Let Claude search your saved ChatGPT chats with Kortex MCP. Make a Just my chats key, add it to Claude, and ask. Your chats stay on your computer. 5 minutes
Setup
- Setup How to use NotebookLM with multiple Google accounts Switch between the Google accounts you use with NotebookLM (Gemini Notebook) using the Kortex extension, from the Workspace sidebar or the side panel. 1 minute
- Setup How to open and pin the Kortex side panel in Chrome Open the Kortex side panel beside any page, pin the toolbar icon so it stays in reach, and use its cards and tabs to import pages and find your notebooks. 1 minute
- Setup How to sync Kortex tags and prompts across computers Sync Kortex prompts, tags, notes and templates between computers with your Kortex account: sign in on both and they appear. 5 minutes
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