# NotebookLM Ultra Exporter — Glossary guides > Plain-language definitions of NotebookLM (Gemini Notebook) terms and the file formats used to export from it, from Audio Overview to APKG, GIFT, QTI and OPML. Section index: https://nlmexporter.com/guides/glossary Pages in this section: 38 --- # What is Gemini Notebook? Source: https://nlmexporter.com/guides/glossary#gemini-notebook Section: Glossary Last verified: November 2026 Gemini Notebook is the name Google gave NotebookLM on July 16, 2026. It is the same source-grounded research assistant: you add documents, links and videos to a notebook, and it answers questions, cites passages and generates study and presentation material from them. ## Good to know - Existing NotebookLM notebooks continued to work under the new name. - Many guides, extensions and searches still use the name NotebookLM. ## Where it matters - [Is NotebookLM now Gemini Notebook?](https://nlmexporter.com/guides/questions/is-notebooklm-now-gemini-notebook) - [What it exports natively](https://nlmexporter.com/guides/questions/what-can-gemini-notebook-export-natively) ## Related guides - [Is NotebookLM now called Gemini Notebook?](https://nlmexporter.com/guides/questions/is-notebooklm-now-gemini-notebook) - [What can Gemini Notebook export without an extension?](https://nlmexporter.com/guides/questions/what-can-gemini-notebook-export-natively) - [What is a notebook in NotebookLM?](https://nlmexporter.com/guides/glossary#notebook) - [What is a source in NotebookLM?](https://nlmexporter.com/guides/glossary#source) - [What is source grounding?](https://nlmexporter.com/guides/glossary#source-grounding) - [What is a citation in NotebookLM?](https://nlmexporter.com/guides/glossary#citation) --- # What is a notebook in NotebookLM? Source: https://nlmexporter.com/guides/glossary#notebook Section: Glossary Last verified: November 2026 A notebook is one workspace in NotebookLM: a set of sources, the chat about them, your saved notes and the Studio items generated from them. Answers in a notebook draw only on that notebook sources, so one notebook per project or course keeps answers on topic. ## Good to know - A notebook belongs to one Google account and can be shared. - There is no built-in export of a whole notebook. ## Where it matters - [Back up a notebook](https://nlmexporter.com/guides/export/notebook-to-zip-backup) - [Organize notebooks](https://nlmexporter.com/guides/questions/how-to-organize-notebooklm-notebooks-into-folders) ## Related guides - [Back up a whole NotebookLM notebook as a ZIP archive](https://nlmexporter.com/guides/export/notebook-to-zip-backup) - [How do I organize NotebookLM notebooks into folders?](https://nlmexporter.com/guides/questions/how-to-organize-notebooklm-notebooks-into-folders) - [What is a source in NotebookLM?](https://nlmexporter.com/guides/glossary#source) - [What is source grounding?](https://nlmexporter.com/guides/glossary#source-grounding) - [What is a citation in NotebookLM?](https://nlmexporter.com/guides/glossary#citation) - [What is the Studio panel in NotebookLM?](https://nlmexporter.com/guides/glossary#studio-panel) --- # What is a source in NotebookLM? Source: https://nlmexporter.com/guides/glossary#source Section: Glossary Last verified: November 2026 A source is one item of material in a NotebookLM notebook: a PDF, a web page, a YouTube video, a Google Doc, an audio file or pasted text. NotebookLM extracts its text and answers only from the sources that are ticked. Each notebook has a maximum number of sources set by Google. ## Good to know - A source is a copy taken when it was added; it does not follow later changes to a web page. - Sources that fail to process cannot be used in answers. ## Where it matters - [The source limit](https://nlmexporter.com/guides/questions/what-is-the-notebooklm-source-limit) - [Add many sources](https://nlmexporter.com/guides/import/bulk-urls-to-notebooklm) ## Related guides - [What is the NotebookLM source limit?](https://nlmexporter.com/guides/questions/what-is-the-notebooklm-source-limit) - [Bulk import a list of URLs into NotebookLM](https://nlmexporter.com/guides/import/bulk-urls-to-notebooklm) - [What is source grounding?](https://nlmexporter.com/guides/glossary#source-grounding) - [What is a citation in NotebookLM?](https://nlmexporter.com/guides/glossary#citation) - [What is the Studio panel in NotebookLM?](https://nlmexporter.com/guides/glossary#studio-panel) - [What is an Audio Overview?](https://nlmexporter.com/guides/glossary#audio-overview) --- # What is source grounding? Source: https://nlmexporter.com/guides/glossary#source-grounding Section: Glossary Last verified: November 2026 Source grounding means an AI answers from documents you supplied rather than from its general training. NotebookLM is grounded in the sources of the notebook and shows which passage each statement came from. Grounding reduces invented facts but does not prevent misreading a source. ## Good to know - Grounded answers are only as complete as the sources. - Asking the model to say what is not covered makes gaps visible. ## Where it matters - [Prompts written for grounded answers](https://nlmexporter.com/guides/prompts) - [Audit a claim](https://nlmexporter.com/guides/prompts/claim-and-evidence-audit-prompt) ## Related guides - [NotebookLM prompt: audit a claim against the evidence](https://nlmexporter.com/guides/prompts/claim-and-evidence-audit-prompt) - [What is a citation in NotebookLM?](https://nlmexporter.com/guides/glossary#citation) - [What is the Studio panel in NotebookLM?](https://nlmexporter.com/guides/glossary#studio-panel) - [What is an Audio Overview?](https://nlmexporter.com/guides/glossary#audio-overview) - [What is a Video Overview?](https://nlmexporter.com/guides/glossary#video-overview) - [What is a NotebookLM mind map?](https://nlmexporter.com/guides/glossary#notebooklm-mind-map) --- # What is a citation in NotebookLM? Source: https://nlmexporter.com/guides/glossary#citation Section: Glossary Last verified: November 2026 A citation in NotebookLM is the numbered marker after a statement that links to the passage in a source supporting it. Clicking it opens that passage. It is a pointer into your own sources, not a formatted bibliographic reference, and it is lost when you copy text out of the app. ## Good to know - Exports can keep the markers or convert them to footnotes. - A reference list is produced separately from the source list. ## Where it matters - [Keep citations when exporting](https://nlmexporter.com/guides/questions/how-to-keep-citations-when-copying-from-notebooklm) - [Citations to footnotes](https://nlmexporter.com/guides/features/citations-to-footnotes) ## Related guides - [How do I keep citations when copying from NotebookLM?](https://nlmexporter.com/guides/questions/how-to-keep-citations-when-copying-from-notebooklm) - [Turn NotebookLM citations into footnotes](https://nlmexporter.com/guides/features/citations-to-footnotes) - [What is the Studio panel in NotebookLM?](https://nlmexporter.com/guides/glossary#studio-panel) - [What is an Audio Overview?](https://nlmexporter.com/guides/glossary#audio-overview) - [What is a Video Overview?](https://nlmexporter.com/guides/glossary#video-overview) - [What is a NotebookLM mind map?](https://nlmexporter.com/guides/glossary#notebooklm-mind-map) --- # What is the Studio panel in NotebookLM? Source: https://nlmexporter.com/guides/glossary#studio-panel Section: Glossary Last verified: November 2026 The Studio panel is the area of a NotebookLM notebook where generated outputs live: Audio and Video Overviews, slide decks, mind maps, reports, flashcards, quizzes, infographics and data tables, together with your saved notes. Each item is generated from the selected sources. ## Good to know - Generation counts against daily limits set by your Google plan. - Each item type has its own, limited, download options. ## Where it matters - [Export every Studio item type](https://nlmexporter.com/guides/export) - [Batch generation](https://nlmexporter.com/guides/features/studio-batch-generation) ## Related guides - [Studio batch generation and packs](https://nlmexporter.com/guides/features/studio-batch-generation) - [What is an Audio Overview?](https://nlmexporter.com/guides/glossary#audio-overview) - [What is a Video Overview?](https://nlmexporter.com/guides/glossary#video-overview) - [What is a NotebookLM mind map?](https://nlmexporter.com/guides/glossary#notebooklm-mind-map) - [What is a data table in NotebookLM?](https://nlmexporter.com/guides/glossary#data-table) - [What is a briefing doc in NotebookLM?](https://nlmexporter.com/guides/glossary#briefing-doc) --- # What is an Audio Overview? Source: https://nlmexporter.com/guides/glossary#audio-overview Section: Glossary Last verified: November 2026 An Audio Overview is a podcast-style conversation between AI hosts that NotebookLM generates from your sources. It summarises and discusses the material, usually in several minutes of audio, and can be steered with instructions about audience and focus. It plays in the notebook and can be downloaded as a file. ## Good to know - It is generated speech, not a recording of people. - It can contain errors; treat it as an introduction, not a reference. ## Where it matters - [Download an Audio Overview](https://nlmexporter.com/guides/export/audio-overview-download) - [Private podcast feed](https://nlmexporter.com/guides/export/audio-overview-to-private-podcast) ## Related guides - [Download a NotebookLM Audio Overview as an audio file](https://nlmexporter.com/guides/export/audio-overview-download) - [Listen to NotebookLM Audio Overviews as a private podcast](https://nlmexporter.com/guides/export/audio-overview-to-private-podcast) - [What is a Video Overview?](https://nlmexporter.com/guides/glossary#video-overview) - [What is a NotebookLM mind map?](https://nlmexporter.com/guides/glossary#notebooklm-mind-map) - [What is a data table in NotebookLM?](https://nlmexporter.com/guides/glossary#data-table) - [What is a briefing doc in NotebookLM?](https://nlmexporter.com/guides/glossary#briefing-doc) --- # What is a Video Overview? Source: https://nlmexporter.com/guides/glossary#video-overview Section: Glossary Last verified: November 2026 A Video Overview is a narrated explainer video NotebookLM generates from your sources, combining generated slides with a voice-over. It suits introductions and summaries. It is delivered as a video file; the visuals are generated images and cannot be edited as slides. ## Good to know - To edit the content, generate a slide deck and convert it instead. - Generation is limited per day by your Google plan. ## Where it matters - [Download as MP4](https://nlmexporter.com/guides/export/video-overview-to-mp4) - [Speaker script from slides](https://nlmexporter.com/guides/export/slides-to-speaker-script) ## Related guides - [Export NotebookLM Video Overviews to MP4](https://nlmexporter.com/guides/export/video-overview-to-mp4) - [Export NotebookLM slides to a speaker script](https://nlmexporter.com/guides/export/slides-to-speaker-script) - [What is a NotebookLM mind map?](https://nlmexporter.com/guides/glossary#notebooklm-mind-map) - [What is a data table in NotebookLM?](https://nlmexporter.com/guides/glossary#data-table) - [What is a briefing doc in NotebookLM?](https://nlmexporter.com/guides/glossary#briefing-doc) - [What is a study guide in NotebookLM?](https://nlmexporter.com/guides/glossary#study-guide) --- # What is a NotebookLM mind map? Source: https://nlmexporter.com/guides/glossary#notebooklm-mind-map Section: Glossary Last verified: November 2026 A NotebookLM mind map is an interactive tree of topics generated from your sources. Clicking a node expands its sub-topics or asks the chat about it. It is read-only inside NotebookLM, which can only save a picture of the currently expanded view. ## Good to know - The full tree, including collapsed branches, can be exported with an extension. - Exported maps can be edited in mind-map apps. ## Where it matters - [Export a mind map](https://nlmexporter.com/guides/questions/how-to-export-a-notebooklm-mind-map) - [Mind map to OPML](https://nlmexporter.com/guides/export/mind-map-to-opml) ## Related guides - [How do I export a NotebookLM mind map?](https://nlmexporter.com/guides/questions/how-to-export-a-notebooklm-mind-map) - [Export NotebookLM mind maps to OPML](https://nlmexporter.com/guides/export/mind-map-to-opml) - [What is a data table in NotebookLM?](https://nlmexporter.com/guides/glossary#data-table) - [What is a briefing doc in NotebookLM?](https://nlmexporter.com/guides/glossary#briefing-doc) - [What is a study guide in NotebookLM?](https://nlmexporter.com/guides/glossary#study-guide) - [What is a text source in NotebookLM?](https://nlmexporter.com/guides/glossary#text-source) --- # What is a data table in NotebookLM? Source: https://nlmexporter.com/guides/glossary#data-table Section: Glossary Last verified: November 2026 A data table is a structured table NotebookLM generates in Studio to compare information across sources, with rows such as studies or products and columns such as method, price or finding. It can be sent to Google Sheets, and with an extension exported as CSV, TSV, Markdown or LaTeX. ## Good to know - Cells are generated text; check numbers and units against the sources. - Describe the columns you want when generating. ## Where it matters - [Table to Excel](https://nlmexporter.com/guides/export/data-tables-to-excel) - [Evidence matrix prompt](https://nlmexporter.com/guides/prompts/research-evidence-matrix-prompt) ## Related guides - [Export NotebookLM data tables to Excel](https://nlmexporter.com/guides/export/data-tables-to-excel) - [NotebookLM prompt: research evidence matrix](https://nlmexporter.com/guides/prompts/research-evidence-matrix-prompt) - [What is a briefing doc in NotebookLM?](https://nlmexporter.com/guides/glossary#briefing-doc) - [What is a study guide in NotebookLM?](https://nlmexporter.com/guides/glossary#study-guide) - [What is a text source in NotebookLM?](https://nlmexporter.com/guides/glossary#text-source) - [What is Gemini Notebook?](https://nlmexporter.com/guides/glossary#gemini-notebook) --- # What is a briefing doc in NotebookLM? Source: https://nlmexporter.com/guides/glossary#briefing-doc Section: Glossary Last verified: November 2026 A briefing doc is a report type in NotebookLM that summarises your sources for a decision-maker: an executive summary, the key themes, important quotes with context and actionable insights. It is generated in Studio and saved as a report. ## Good to know - Other report types include study guides, FAQs and blog-style posts. - Reports can be sent to Google Docs or exported as files. ## Where it matters - [Report to Word](https://nlmexporter.com/guides/export/reports-to-word) - [Report to PDF](https://nlmexporter.com/guides/export/reports-to-pdf) ## Related guides - [Export NotebookLM reports to Word](https://nlmexporter.com/guides/export/reports-to-word) - [Export NotebookLM reports to PDF](https://nlmexporter.com/guides/export/reports-to-pdf) - [What is a study guide in NotebookLM?](https://nlmexporter.com/guides/glossary#study-guide) - [What is a text source in NotebookLM?](https://nlmexporter.com/guides/glossary#text-source) - [What is Gemini Notebook?](https://nlmexporter.com/guides/glossary#gemini-notebook) - [What is a notebook in NotebookLM?](https://nlmexporter.com/guides/glossary#notebook) --- # What is a study guide in NotebookLM? Source: https://nlmexporter.com/guides/glossary#study-guide Section: Glossary Last verified: November 2026 A study guide is a report type in NotebookLM built for revision: key concepts, short-answer practice questions, essay prompts and a glossary of important terms, all drawn from your sources. It complements flashcards and quizzes, which test the same material interactively. ## Good to know - Generate it per unit rather than per course for more specific questions. - Export it to PDF to print or annotate. ## Where it matters - [Study guide prompt](https://nlmexporter.com/guides/prompts/study-guide-from-sources-prompt) - [Exam preparation workflow](https://nlmexporter.com/guides/use-cases/notebooklm-for-exam-preparation) ## Related guides - [NotebookLM prompt: study guide from your sources](https://nlmexporter.com/guides/prompts/study-guide-from-sources-prompt) - [How to prepare for an exam with NotebookLM](https://nlmexporter.com/guides/use-cases/notebooklm-for-exam-preparation) - [What is a text source in NotebookLM?](https://nlmexporter.com/guides/glossary#text-source) - [What is Gemini Notebook?](https://nlmexporter.com/guides/glossary#gemini-notebook) - [What is a notebook in NotebookLM?](https://nlmexporter.com/guides/glossary#notebook) - [What is a source in NotebookLM?](https://nlmexporter.com/guides/glossary#source) --- # What is a text source in NotebookLM? Source: https://nlmexporter.com/guides/glossary#text-source Section: Glossary Last verified: November 2026 A text source is a source created from text you supply, by pasting it or sending it from an extension, instead of from a file or link. It is how content NotebookLM cannot fetch itself, such as a page behind a login or an AI chat, gets into a notebook. ## Good to know - It counts as one source and has the same size limit. - Give it a clear title; it has no URL to identify it. ## Where it matters - [Link vs text source](https://nlmexporter.com/guides/compare/link-source-vs-text-source) - [Add pasted text](https://nlmexporter.com/guides/import/pasted-text-to-notebooklm) ## Related guides - [Link source vs text source in NotebookLM](https://nlmexporter.com/guides/compare/link-source-vs-text-source) - [Add long pasted text to NotebookLM as sources](https://nlmexporter.com/guides/import/pasted-text-to-notebooklm) - [What is Gemini Notebook?](https://nlmexporter.com/guides/glossary#gemini-notebook) - [What is a notebook in NotebookLM?](https://nlmexporter.com/guides/glossary#notebook) - [What is a source in NotebookLM?](https://nlmexporter.com/guides/glossary#source) - [What is source grounding?](https://nlmexporter.com/guides/glossary#source-grounding) --- # What is an APKG file? Source: https://nlmexporter.com/guides/glossary#apkg Section: Glossary Last verified: November 2026 An APKG file is an Anki deck package. It contains cards, their note types and deck settings in one file that Anki desktop, AnkiMobile and AnkiDroid open directly, with no field mapping. It is the simplest way to hand someone a ready-made flashcard deck. ## Good to know - It is a compressed archive containing a small database. - Importing the same package twice updates rather than duplicates matching cards. ## Where it matters - [Flashcards to Anki .apkg](https://nlmexporter.com/guides/export/flashcards-to-anki-apkg) - [Anki text vs APKG](https://nlmexporter.com/guides/compare/anki-tsv-vs-apkg) ## Related guides - [Export NotebookLM flashcards to an Anki deck](https://nlmexporter.com/guides/export/flashcards-to-anki-apkg) - [Anki text file vs APKG: which NotebookLM flashcard export?](https://nlmexporter.com/guides/compare/anki-tsv-vs-apkg) - [What is an Anki text (TSV) import file?](https://nlmexporter.com/guides/glossary#anki-tsv) - [What is the GIFT format?](https://nlmexporter.com/guides/glossary#gift-format) - [What is Moodle XML?](https://nlmexporter.com/guides/glossary#moodle-xml) - [What is QTI?](https://nlmexporter.com/guides/glossary#qti) --- # What is an Anki text (TSV) import file? Source: https://nlmexporter.com/guides/glossary#anki-tsv Section: Glossary Last verified: November 2026 An Anki text file is a plain text file with one card per line and a tab between the front and the back. Anki imports it through File, Import, where you choose the deck, the note type and which column fills which field. It is the most portable way to load cards. ## Good to know - It can be opened and edited in a spreadsheet. - Line breaks and tabs inside a card must be escaped, which exporters handle. ## Where it matters - [Flashcards to Anki](https://nlmexporter.com/guides/export/flashcards-to-anki) - [NotebookLM to Anki](https://nlmexporter.com/guides/integrations/notebooklm-to-anki) ## Related guides - [Export NotebookLM flashcards to Anki](https://nlmexporter.com/guides/export/flashcards-to-anki) - [NotebookLM to Anki: flashcards and quizzes as decks](https://nlmexporter.com/guides/integrations/notebooklm-to-anki) - [What is the GIFT format?](https://nlmexporter.com/guides/glossary#gift-format) - [What is Moodle XML?](https://nlmexporter.com/guides/glossary#moodle-xml) - [What is QTI?](https://nlmexporter.com/guides/glossary#qti) - [What is the Aiken format?](https://nlmexporter.com/guides/glossary#aiken-format) --- # What is the GIFT format? Source: https://nlmexporter.com/guides/glossary#gift-format Section: Glossary Last verified: November 2026 GIFT is a plain-text format for quiz questions created for Moodle. Each question is written as text with the answers in curly braces, where an equals sign marks the correct answer and a tilde marks a wrong one. It is easy to read, edit and import into a Moodle question bank. ## Good to know - Special characters such as braces and colons must be escaped. - It supports multiple choice, true or false, short answer and matching. ## Where it matters - [Quiz to Moodle GIFT](https://nlmexporter.com/guides/export/quiz-to-moodle-gift) - [GIFT vs Moodle XML](https://nlmexporter.com/guides/compare/moodle-gift-vs-moodle-xml) ## Related guides - [Export NotebookLM quizzes to Moodle GIFT](https://nlmexporter.com/guides/export/quiz-to-moodle-gift) - [Moodle GIFT vs Moodle XML for NotebookLM quizzes](https://nlmexporter.com/guides/compare/moodle-gift-vs-moodle-xml) - [What is Moodle XML?](https://nlmexporter.com/guides/glossary#moodle-xml) - [What is QTI?](https://nlmexporter.com/guides/glossary#qti) - [What is the Aiken format?](https://nlmexporter.com/guides/glossary#aiken-format) - [What is an APKG file?](https://nlmexporter.com/guides/glossary#apkg) --- # What is Moodle XML? Source: https://nlmexporter.com/guides/glossary#moodle-xml Section: Glossary Last verified: November 2026 Moodle XML is the detailed question format native to Moodle. It stores each question with its type, answers, grades, feedback and formatting in XML, so it preserves more than GIFT. It is imported from the question bank and is specific to Moodle. ## Good to know - Files are verbose and not meant for hand editing. - It handles formatted text and special characters reliably. ## Where it matters - [Quiz to Moodle XML](https://nlmexporter.com/guides/export/quiz-to-moodle-xml) - [NotebookLM to Moodle](https://nlmexporter.com/guides/integrations/notebooklm-to-moodle) ## Related guides - [Export NotebookLM quizzes to Moodle XML](https://nlmexporter.com/guides/export/quiz-to-moodle-xml) - [NotebookLM to Moodle: quiz questions into the question bank](https://nlmexporter.com/guides/integrations/notebooklm-to-moodle) - [What is QTI?](https://nlmexporter.com/guides/glossary#qti) - [What is the Aiken format?](https://nlmexporter.com/guides/glossary#aiken-format) - [What is an APKG file?](https://nlmexporter.com/guides/glossary#apkg) - [What is an Anki text (TSV) import file?](https://nlmexporter.com/guides/glossary#anki-tsv) --- # What is QTI? Source: https://nlmexporter.com/guides/glossary#qti Section: Glossary Last verified: November 2026 QTI, Question and Test Interoperability, is a standard for exchanging quiz questions between learning platforms. A QTI export is a ZIP package of XML files that Canvas and other systems import as a quiz or question bank. Platforms support different QTI versions, so a test import is advisable. ## Good to know - Canvas imports QTI through its course import tool. - Not every question setting survives a transfer between platforms. ## Where it matters - [Quiz to Canvas QTI](https://nlmexporter.com/guides/export/quiz-to-canvas-qti) - [NotebookLM to Canvas](https://nlmexporter.com/guides/integrations/notebooklm-to-canvas) ## Related guides - [Export NotebookLM quizzes to Canvas (QTI)](https://nlmexporter.com/guides/export/quiz-to-canvas-qti) - [NotebookLM to Canvas: quizzes as a QTI package](https://nlmexporter.com/guides/integrations/notebooklm-to-canvas) - [What is the Aiken format?](https://nlmexporter.com/guides/glossary#aiken-format) - [What is an APKG file?](https://nlmexporter.com/guides/glossary#apkg) - [What is an Anki text (TSV) import file?](https://nlmexporter.com/guides/glossary#anki-tsv) - [What is the GIFT format?](https://nlmexporter.com/guides/glossary#gift-format) --- # What is the Aiken format? Source: https://nlmexporter.com/guides/glossary#aiken-format Section: Glossary Last verified: November 2026 Aiken is the simplest text format for multiple-choice questions. Each question is a line of text, followed by lettered options and a final line naming the answer, such as ANSWER: B. Moodle and several other platforms import it, and it can be written in any text editor. ## Good to know - It supports multiple choice only. - It has no place for feedback or explanations. ## Where it matters - [Quiz to Aiken](https://nlmexporter.com/guides/export/quiz-to-aiken) - [Create quizzes for a class](https://nlmexporter.com/guides/use-cases/notebooklm-for-quiz-creation) ## Related guides - [Export NotebookLM quizzes to Aiken format](https://nlmexporter.com/guides/export/quiz-to-aiken) - [How to create quizzes for your class with NotebookLM](https://nlmexporter.com/guides/use-cases/notebooklm-for-quiz-creation) - [What is an APKG file?](https://nlmexporter.com/guides/glossary#apkg) - [What is an Anki text (TSV) import file?](https://nlmexporter.com/guides/glossary#anki-tsv) - [What is the GIFT format?](https://nlmexporter.com/guides/glossary#gift-format) - [What is Moodle XML?](https://nlmexporter.com/guides/glossary#moodle-xml) --- # What is Markdown? Source: https://nlmexporter.com/guides/glossary#markdown Section: Glossary Last verified: November 2026 Markdown is a plain-text way of writing formatted documents: a hash sign for a heading, asterisks for emphasis, hyphens for a list. The file stays readable as text and is rendered as formatted content by notes apps, wikis and code platforms such as Obsidian, Notion and GitHub. ## Good to know - It has no page layout; the displaying app decides the look. - Tables, code blocks and equations use widely supported extensions. ## Where it matters - [Notes to Markdown](https://nlmexporter.com/guides/export/notes-to-markdown) - [Markdown vs Word](https://nlmexporter.com/guides/compare/markdown-vs-word) ## Related guides - [Export NotebookLM notes to Markdown](https://nlmexporter.com/guides/export/notes-to-markdown) - [Markdown vs Word for NotebookLM notes](https://nlmexporter.com/guides/compare/markdown-vs-word) - [What is LaTeX?](https://nlmexporter.com/guides/glossary#latex) - [What is a DOCX file?](https://nlmexporter.com/guides/glossary#docx) - [What is a PPTX file?](https://nlmexporter.com/guides/glossary#pptx) - [What is a CSV file?](https://nlmexporter.com/guides/glossary#csv) --- # What is LaTeX? Source: https://nlmexporter.com/guides/glossary#latex Section: Glossary Last verified: November 2026 LaTeX is a typesetting system used for academic papers and theses, especially in mathematics and science. You write text with commands in a .tex file and compile it to PDF. It excels at equations, references and consistent structure, and is used online through Overleaf. ## Good to know - A .tex export is source text, not a finished PDF. - References are usually managed with a BibTeX file. ## Where it matters - [Notes to LaTeX](https://nlmexporter.com/guides/export/notes-to-latex) - [NotebookLM to Overleaf](https://nlmexporter.com/guides/integrations/notebooklm-to-overleaf) ## Related guides - [Export NotebookLM notes to LaTeX](https://nlmexporter.com/guides/export/notes-to-latex) - [NotebookLM to Overleaf: LaTeX source for papers](https://nlmexporter.com/guides/integrations/notebooklm-to-overleaf) - [What is a DOCX file?](https://nlmexporter.com/guides/glossary#docx) - [What is a PPTX file?](https://nlmexporter.com/guides/glossary#pptx) - [What is a CSV file?](https://nlmexporter.com/guides/glossary#csv) - [What is a TSV file?](https://nlmexporter.com/guides/glossary#tsv) --- # What is a DOCX file? Source: https://nlmexporter.com/guides/glossary#docx Section: Glossary Last verified: November 2026 DOCX is the document format of Microsoft Word. It stores text, styles, tables, images, footnotes and comments, and opens in Word, Google Docs, Pages and LibreOffice. It is the standard format when a document will be edited or reviewed by other people. ## Good to know - It keeps real footnotes and a generated table of contents. - Appearance can vary slightly between apps and installed fonts. ## Where it matters - [Notes to Word](https://nlmexporter.com/guides/export/notes-to-word) - [Word vs PDF](https://nlmexporter.com/guides/compare/word-vs-pdf) ## Related guides - [Export NotebookLM notes to Word](https://nlmexporter.com/guides/export/notes-to-word) - [Word vs PDF for NotebookLM reports](https://nlmexporter.com/guides/compare/word-vs-pdf) - [What is a PPTX file?](https://nlmexporter.com/guides/glossary#pptx) - [What is a CSV file?](https://nlmexporter.com/guides/glossary#csv) - [What is a TSV file?](https://nlmexporter.com/guides/glossary#tsv) - [What is a JSON export?](https://nlmexporter.com/guides/glossary#json) --- # What is a PPTX file? Source: https://nlmexporter.com/guides/glossary#pptx Section: Glossary Last verified: November 2026 PPTX is the presentation format of Microsoft PowerPoint, also opened by Google Slides and Keynote. A slide can hold editable text boxes or just a picture. NotebookLM decks download as picture-only slides, which is why their text cannot be edited without a rebuild. ## Good to know - Speaker notes are stored per slide. - Themes apply only to real text and shapes, not to image slides. ## Where it matters - [Slides to PowerPoint](https://nlmexporter.com/guides/export/slides-to-powerpoint) - [Image vs editable PPTX](https://nlmexporter.com/guides/compare/image-pptx-vs-editable-pptx) ## Related guides - [Export NotebookLM slides to PowerPoint](https://nlmexporter.com/guides/export/slides-to-powerpoint) - [Image PowerPoint vs editable PowerPoint from NotebookLM](https://nlmexporter.com/guides/compare/image-pptx-vs-editable-pptx) - [What is a CSV file?](https://nlmexporter.com/guides/glossary#csv) - [What is a TSV file?](https://nlmexporter.com/guides/glossary#tsv) - [What is a JSON export?](https://nlmexporter.com/guides/glossary#json) - [What is an EPUB file?](https://nlmexporter.com/guides/glossary#epub) --- # What is a CSV file? Source: https://nlmexporter.com/guides/glossary#csv Section: Glossary Last verified: November 2026 CSV, comma-separated values, is a plain-text table format with one row per line and commas between columns. Nearly every spreadsheet, database and import tool reads it. It carries values only: no formulas, formatting or multiple sheets. ## Good to know - Cells containing commas are wrapped in quotation marks. - Use UTF-8 encoding to keep accented characters. ## Where it matters - [Data tables to CSV](https://nlmexporter.com/guides/export/data-tables-to-csv) - [CSV vs TSV](https://nlmexporter.com/guides/compare/csv-vs-tsv) ## Related guides - [Export NotebookLM data tables to CSV](https://nlmexporter.com/guides/export/data-tables-to-csv) - [CSV vs TSV for NotebookLM data tables](https://nlmexporter.com/guides/compare/csv-vs-tsv) - [What is a TSV file?](https://nlmexporter.com/guides/glossary#tsv) - [What is a JSON export?](https://nlmexporter.com/guides/glossary#json) - [What is an EPUB file?](https://nlmexporter.com/guides/glossary#epub) - [What is Markdown?](https://nlmexporter.com/guides/glossary#markdown) --- # What is a TSV file? Source: https://nlmexporter.com/guides/glossary#tsv Section: Glossary Last verified: November 2026 TSV, tab-separated values, is a plain-text table format like CSV but with tab characters between columns. Because ordinary text rarely contains tabs, it is more robust for cells with long sentences, and it pastes straight into spreadsheet columns. ## Good to know - Excel opens it directly. - Anki text import uses the same idea. ## Where it matters - [Data tables to Excel](https://nlmexporter.com/guides/export/data-tables-to-excel) - [CSV vs TSV](https://nlmexporter.com/guides/compare/csv-vs-tsv) ## Related guides - [Export NotebookLM data tables to Excel](https://nlmexporter.com/guides/export/data-tables-to-excel) - [CSV vs TSV for NotebookLM data tables](https://nlmexporter.com/guides/compare/csv-vs-tsv) - [What is a JSON export?](https://nlmexporter.com/guides/glossary#json) - [What is an EPUB file?](https://nlmexporter.com/guides/glossary#epub) - [What is Markdown?](https://nlmexporter.com/guides/glossary#markdown) - [What is LaTeX?](https://nlmexporter.com/guides/glossary#latex) --- # What is a JSON export? Source: https://nlmexporter.com/guides/glossary#json Section: Glossary Last verified: November 2026 JSON is a structured text format that programs read easily. A JSON export of a chat, quiz, flashcard deck or mind map keeps every field, such as question, options, answer and explanation, labelled separately, which makes it the right choice for scripts, automation and custom tools. ## Good to know - It is not meant for reading as a document. - It preserves structure that document formats flatten. ## Where it matters - [Chat history to JSON](https://nlmexporter.com/guides/export/chat-history-to-json) - [Quiz to JSON](https://nlmexporter.com/guides/export/quiz-to-json) ## Related guides - [Export NotebookLM chat history to JSON](https://nlmexporter.com/guides/export/chat-history-to-json) - [Export NotebookLM quizzes to JSON](https://nlmexporter.com/guides/export/quiz-to-json) - [What is an EPUB file?](https://nlmexporter.com/guides/glossary#epub) - [What is Markdown?](https://nlmexporter.com/guides/glossary#markdown) - [What is LaTeX?](https://nlmexporter.com/guides/glossary#latex) - [What is a DOCX file?](https://nlmexporter.com/guides/glossary#docx) --- # What is an EPUB file? Source: https://nlmexporter.com/guides/glossary#epub Section: Glossary Last verified: November 2026 EPUB is the standard e-book format. It packages a book as chapters of reflowable text, so it adapts to any screen size. NotebookLM does not accept EPUB directly; the book has to be converted to text or PDF, ideally one source per chapter. ## Good to know - Copy-protected e-books cannot be converted. - Chapter-level sources give more precise citations than one large file. ## Where it matters - [Import an EPUB book](https://nlmexporter.com/guides/import/epub-book-to-notebooklm) - [Supported file types](https://nlmexporter.com/guides/questions/what-file-types-does-notebooklm-support) ## Related guides - [Import an EPUB book into NotebookLM by chapter](https://nlmexporter.com/guides/import/epub-book-to-notebooklm) - [What file types does NotebookLM support as sources?](https://nlmexporter.com/guides/questions/what-file-types-does-notebooklm-support) - [What is Markdown?](https://nlmexporter.com/guides/glossary#markdown) - [What is LaTeX?](https://nlmexporter.com/guides/glossary#latex) - [What is a DOCX file?](https://nlmexporter.com/guides/glossary#docx) - [What is a PPTX file?](https://nlmexporter.com/guides/glossary#pptx) --- # What is OPML? Source: https://nlmexporter.com/guides/glossary#opml Section: Glossary Last verified: November 2026 OPML, Outline Processor Markup Language, is an XML format for outlines: nested lists of items. Outliners such as Workflowy and OmniOutliner and many mind-map apps import it, which makes it a common bridge for moving a hierarchy from one tool to another. ## Good to know - It carries structure and text, not colours or positions. - It is also used to exchange lists of RSS feeds. ## Where it matters - [Mind map to OPML](https://nlmexporter.com/guides/export/mind-map-to-opml) - [OPML vs FreeMind](https://nlmexporter.com/guides/compare/opml-vs-freemind) ## Related guides - [Export NotebookLM mind maps to OPML](https://nlmexporter.com/guides/export/mind-map-to-opml) - [OPML vs FreeMind for NotebookLM mind maps](https://nlmexporter.com/guides/compare/opml-vs-freemind) - [What is a FreeMind (.mm) file?](https://nlmexporter.com/guides/glossary#freemind-mm) - [What is an SVG file?](https://nlmexporter.com/guides/glossary#svg) - [What is BibTeX?](https://nlmexporter.com/guides/glossary#bibtex) - [What is an RIS file?](https://nlmexporter.com/guides/glossary#ris) --- # What is a FreeMind (.mm) file? Source: https://nlmexporter.com/guides/glossary#freemind-mm Section: Glossary Last verified: November 2026 A .mm file is the mind-map format of the open-source FreeMind program. Because it is simple and documented, it became an exchange format that Freeplane, XMind, MindNode, MindMeister and other mind-map apps can import. ## Good to know - It stores the node tree and basic attributes. - Styling is interpreted differently by each app. ## Where it matters - [Mind map to FreeMind](https://nlmexporter.com/guides/export/mind-map-to-freemind) - [NotebookLM to Freeplane](https://nlmexporter.com/guides/integrations/notebooklm-to-freeplane) ## Related guides - [Export NotebookLM mind maps to FreeMind](https://nlmexporter.com/guides/export/mind-map-to-freemind) - [NotebookLM to Freeplane and FreeMind: open the .mm file directly](https://nlmexporter.com/guides/integrations/notebooklm-to-freeplane) - [What is an SVG file?](https://nlmexporter.com/guides/glossary#svg) - [What is OPML?](https://nlmexporter.com/guides/glossary#opml) - [What is BibTeX?](https://nlmexporter.com/guides/glossary#bibtex) - [What is an RIS file?](https://nlmexporter.com/guides/glossary#ris) --- # What is an SVG file? Source: https://nlmexporter.com/guides/glossary#svg Section: Glossary Last verified: November 2026 SVG, Scalable Vector Graphics, is an image format that describes shapes and text mathematically instead of as pixels. It stays sharp at any size and can be edited in design tools. It suits diagrams such as mind maps, though some office and chat apps do not display it. ## Good to know - Browsers open SVG files directly. - Text inside remains selectable. ## Where it matters - [Mind map to SVG](https://nlmexporter.com/guides/export/mind-map-to-svg) - [PNG vs SVG](https://nlmexporter.com/guides/compare/png-vs-svg-mind-map) ## Related guides - [Export NotebookLM mind maps to SVG](https://nlmexporter.com/guides/export/mind-map-to-svg) - [PNG vs SVG for a NotebookLM mind map image](https://nlmexporter.com/guides/compare/png-vs-svg-mind-map) - [What is OPML?](https://nlmexporter.com/guides/glossary#opml) - [What is a FreeMind (.mm) file?](https://nlmexporter.com/guides/glossary#freemind-mm) - [What is BibTeX?](https://nlmexporter.com/guides/glossary#bibtex) - [What is an RIS file?](https://nlmexporter.com/guides/glossary#ris) --- # What is BibTeX? Source: https://nlmexporter.com/guides/glossary#bibtex Section: Glossary Last verified: November 2026 BibTeX is the reference format used with LaTeX. A .bib file lists entries, each with a type, a citation key and fields such as title, author and year. LaTeX documents cite the keys, and reference managers such as Zotero and JabRef import and export the format. ## Good to know - Entries exported from NotebookLM sources lack authors and dates. - Citation keys must be unique within a file. ## Where it matters - [Bibliography to BibTeX](https://nlmexporter.com/guides/export/bibliography-to-bibtex) - [BibTeX vs RIS](https://nlmexporter.com/guides/compare/bibtex-vs-ris) ## Related guides - [Export NotebookLM sources to BibTeX](https://nlmexporter.com/guides/export/bibliography-to-bibtex) - [BibTeX vs RIS for NotebookLM sources](https://nlmexporter.com/guides/compare/bibtex-vs-ris) - [What is an RIS file?](https://nlmexporter.com/guides/glossary#ris) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) --- # What is an RIS file? Source: https://nlmexporter.com/guides/glossary#ris Section: Glossary Last verified: November 2026 RIS is a tagged text format for exchanging references between programs. Each line starts with a two-letter tag, such as TI for title or UR for URL. Zotero, Mendeley, EndNote and most library databases import and export it. ## Good to know - It is the safest choice when you are unsure what the recipient uses. - It carries reference data, not formatted citations. ## Where it matters - [Bibliography to RIS](https://nlmexporter.com/guides/export/bibliography-to-ris) - [NotebookLM to EndNote](https://nlmexporter.com/guides/integrations/notebooklm-to-endnote) ## Related guides - [Export NotebookLM sources to RIS](https://nlmexporter.com/guides/export/bibliography-to-ris) - [NotebookLM to EndNote: source lists as RIS](https://nlmexporter.com/guides/integrations/notebooklm-to-endnote) - [What is BibTeX?](https://nlmexporter.com/guides/glossary#bibtex) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) --- # What is an RSS feed? Source: https://nlmexporter.com/guides/glossary#rss-feed Section: Glossary Last verified: November 2026 An RSS feed is a web address that lists the latest items from a site, such as articles or podcast episodes, in a machine-readable form. Feed readers and podcast apps check it for new items. In this context it is used two ways: to import new articles into a notebook, and to deliver audio to a podcast app. ## Good to know - Atom is a similar format handled the same way. - A private feed is unlisted; anyone with its address can read it. ## Where it matters - [Import an RSS feed](https://nlmexporter.com/guides/import/rss-feed-to-notebooklm) - [Private podcasts](https://nlmexporter.com/guides/features/private-podcasts) ## Related guides - [Import an RSS feed into NotebookLM](https://nlmexporter.com/guides/import/rss-feed-to-notebooklm) - [Private podcasts from NotebookLM Audio Overviews](https://nlmexporter.com/guides/features/private-podcasts) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) - [What does "per local day" mean for export limits?](https://nlmexporter.com/guides/glossary#local-day) - [What is a collection in Ultra Exporter?](https://nlmexporter.com/guides/glossary#collection) --- # What is a wiki-link? Source: https://nlmexporter.com/guides/glossary#wiki-link Section: Glossary Last verified: November 2026 A wiki-link is a link between notes written as the note name in double square brackets. Obsidian, Logseq and similar apps use it to build a web of connected notes and show backlinks. An archive in Obsidian style includes an index note that wiki-links to every exported item. ## Good to know - Wiki-links depend on file names, so renaming a file can break them outside the app. - NotebookLM treats them as plain text when notes are imported. ## Where it matters - [Notebook to Obsidian vault](https://nlmexporter.com/guides/export/notebook-to-obsidian-vault) - [NotebookLM with Obsidian](https://nlmexporter.com/guides/questions/how-to-use-notebooklm-with-obsidian) ## Related guides - [Export a whole NotebookLM notebook to an Obsidian vault](https://nlmexporter.com/guides/export/notebook-to-obsidian-vault) - [How do I use NotebookLM with Obsidian?](https://nlmexporter.com/guides/questions/how-to-use-notebooklm-with-obsidian) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) - [What does "per local day" mean for export limits?](https://nlmexporter.com/guides/glossary#local-day) - [What is a collection in Ultra Exporter?](https://nlmexporter.com/guides/glossary#collection) - [What is an import recipe?](https://nlmexporter.com/guides/glossary#import-recipe) --- # What is frontmatter? Source: https://nlmexporter.com/guides/glossary#frontmatter Section: Glossary Last verified: November 2026 Frontmatter is a block of metadata at the top of a Markdown file, between two lines of three hyphens, written as key and value pairs. Notes apps and site generators read it for properties such as title, date, source and tags without showing it as body text. ## Good to know - Obsidian shows frontmatter as note properties. - It lets you filter exported notes by notebook or type. ## Where it matters - [Notebook to Obsidian vault](https://nlmexporter.com/guides/export/notebook-to-obsidian-vault) - [NotebookLM to Obsidian](https://nlmexporter.com/guides/integrations/notebooklm-to-obsidian) ## Related guides - [Export a whole NotebookLM notebook to an Obsidian vault](https://nlmexporter.com/guides/export/notebook-to-obsidian-vault) - [NotebookLM to Obsidian: notes, chats and whole notebooks](https://nlmexporter.com/guides/integrations/notebooklm-to-obsidian) - [What does "per local day" mean for export limits?](https://nlmexporter.com/guides/glossary#local-day) - [What is a collection in Ultra Exporter?](https://nlmexporter.com/guides/glossary#collection) - [What is an import recipe?](https://nlmexporter.com/guides/glossary#import-recipe) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) --- # What does "per local day" mean for export limits? Source: https://nlmexporter.com/guides/glossary#local-day Section: Glossary Last verified: November 2026 A local day is the calendar day according to the clock and time zone of your own computer. The free allowances in NotebookLM Ultra Exporter, such as 5 Word or PDF exports and 20 source imports, are counted per local day and reset at local midnight. ## Good to know - Only successful exports and imports are counted. - Unused allowance does not roll over. ## Where it matters - [Free limits explained](https://nlmexporter.com/guides/questions/what-are-the-free-export-limits) - [Free vs Pro](https://nlmexporter.com/guides/features/free-vs-pro) ## Related guides - [What are the free limits in NotebookLM Ultra Exporter?](https://nlmexporter.com/guides/questions/what-are-the-free-export-limits) - [Ultra Exporter Free vs Pro](https://nlmexporter.com/guides/features/free-vs-pro) - [What is a collection in Ultra Exporter?](https://nlmexporter.com/guides/glossary#collection) - [What is an import recipe?](https://nlmexporter.com/guides/glossary#import-recipe) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) --- # What is a collection in Ultra Exporter? Source: https://nlmexporter.com/guides/glossary#collection Section: Glossary Last verified: November 2026 A collection is a named group of NotebookLM notebooks in the Ultra Exporter workspace. It works like a folder, giving a flat notebook list some structure. Collections are stored by the extension, so they organise your view without changing the notebooks themselves. ## Good to know - Automation rules can add notebooks to a collection. - Podcasts and schedules can target a collection. ## Where it matters - [Collections and tags](https://nlmexporter.com/guides/features/collections-and-tags) - [Organize into folders](https://nlmexporter.com/guides/questions/how-to-organize-notebooklm-notebooks-into-folders) ## Related guides - [Collections, tags and pins for notebooks](https://nlmexporter.com/guides/features/collections-and-tags) - [How do I organize NotebookLM notebooks into folders?](https://nlmexporter.com/guides/questions/how-to-organize-notebooklm-notebooks-into-folders) - [What is an import recipe?](https://nlmexporter.com/guides/glossary#import-recipe) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) --- # What is an import recipe? Source: https://nlmexporter.com/guides/glossary#import-recipe Section: Glossary Last verified: November 2026 An import recipe is a saved import in NotebookLM Ultra Exporter: a source such as a feed, playlist or website, its filters, and the notebook it goes to. Running the recipe again imports only new items. With Pro, a recipe can be checked on a schedule while Chrome is open. ## Good to know - Free saves one recipe. - Recipes do not store login details or local files. ## Where it matters - [Scheduled import recipes](https://nlmexporter.com/guides/import/scheduled-import-recipes-to-notebooklm) - [Import recipes feature](https://nlmexporter.com/guides/features/import-recipes) ## Related guides - [Schedule recurring imports into NotebookLM](https://nlmexporter.com/guides/import/scheduled-import-recipes-to-notebooklm) - [Import recipes and scheduled checks](https://nlmexporter.com/guides/features/import-recipes) - [What is an RSS feed?](https://nlmexporter.com/guides/glossary#rss-feed) - [What is a wiki-link?](https://nlmexporter.com/guides/glossary#wiki-link) - [What is frontmatter?](https://nlmexporter.com/guides/glossary#frontmatter) - [What does "per local day" mean for export limits?](https://nlmexporter.com/guides/glossary#local-day)