# What file types does NotebookLM support as sources?

Source: https://nlmexporter.com/guides/questions/what-file-types-does-notebooklm-support  
Section: Questions  
Last verified: November 2026

NotebookLM accepts PDF, text and Markdown files, Word documents, Google Docs and Slides, web page links, YouTube links, audio files, images and pasted text. Google adds formats over time, so its help page has the current list. Formats it does not take, such as EPUB, need converting first.

## What to know

- Scanned PDFs work only if the text can be recognised.
- Each source has a size limit of 500,000 words or 200 MB.
- NotebookLM Ultra Exporter Pro converts an EPUB into one text source per chapter and splits oversized PDFs.

> Google changes these menus often. The item's own menu in your notebook shows what is built in today.

## Frequently asked questions

### Can I upload a folder?

Not in NotebookLM itself. The extension import center accepts a whole folder and sends Markdown and text files as text sources and other files through the official upload.

## Related guides

- [Bulk upload files and folders to NotebookLM](https://nlmexporter.com/guides/import/local-files-and-folders-to-notebooklm)
- [Import an EPUB book into NotebookLM by chapter](https://nlmexporter.com/guides/import/epub-book-to-notebooklm)
- [Split a large PDF into parts for NotebookLM](https://nlmexporter.com/guides/import/large-pdf-split-to-notebooklm)
- [How do I upload a PDF that is too large for NotebookLM?](https://nlmexporter.com/guides/questions/how-to-upload-a-large-pdf-to-notebooklm)
- [Can NotebookLM update sources automatically?](https://nlmexporter.com/guides/questions/can-notebooklm-update-sources-automatically)
- [What is the NotebookLM source limit?](https://nlmexporter.com/guides/questions/what-is-the-notebooklm-source-limit)