# Import research papers into NotebookLM by DOI

Source: https://nlmexporter.com/guides/import/research-papers-doi-to-notebooklm  
Section: Import  
Last verified: November 2026  
Plan: Pro

To build a literature notebook, paste paper URLs or DOIs into the papers import of NotebookLM Ultra Exporter Pro. It resolves each one, shows whether full text, an abstract or only a link is available, and imports the items you select.

## Quick facts

| Item | Detail |
| --- | --- |
| Where | Import center, papers / DOI method |
| Plan | Pro |
| Allowance | Pro only. No extension daily quota; individual tools still have task caps. |
| Data flow | The material you select is sent to Google NotebookLM. Capture reads the source site from your browser. |

## Steps

1. Install [NotebookLM Ultra Exporter](https://chromewebstore.google.com/detail/notebooklm-ultra-exporter/afchokljnhhggkhedfbmkcmdagjmjchj) in desktop Chrome, then refresh any open NotebookLM (Gemini Notebook) tab.
2. Connect Pro: open the extension's account panel and sign in with the Google account you bought Pro with.
3. Open the import center and choose papers.
4. Paste DOIs, paper URLs, arXiv or PubMed identifiers, one per line.
5. Check the preview, which distinguishes full text, abstracts and links, then submit.

## Limits to know

- It does not bypass paywalls and does not promise full text.
- Metadata quality depends on what the publisher exposes.
- Google's own limits still apply: sources per notebook, file size and accepted file types are decided by NotebookLM, and Pro does not raise them.

## Frequently asked questions

### Is it free to import research papers into NotebookLM by DOI?

No. This import method is part of Ultra Exporter Pro. The basic methods (links, pasted text, files, tabs, the current page, RSS and YouTube) are free within 20 imports per day.

### What if only the abstract is available?

The preview says so. Import the abstract, or download the PDF through your library access and upload the file instead.

### Does importing count toward the NotebookLM source limit?

Yes. Every imported item becomes a source in the notebook and counts toward its source limit, which depends on your Google plan. To free up slots, see [merge sources into one](https://nlmexporter.com/guides/import/merge-sources-to-notebooklm).

## Related guides

- [Import arXiv papers into NotebookLM](https://nlmexporter.com/guides/import/arxiv-papers-to-notebooklm)
- [Import PubMed articles into NotebookLM](https://nlmexporter.com/guides/import/pubmed-articles-to-notebooklm)
- [Bulk upload files and folders to NotebookLM](https://nlmexporter.com/guides/import/local-files-and-folders-to-notebooklm)
- [Import an Obsidian vault into NotebookLM](https://nlmexporter.com/guides/import/obsidian-vault-to-notebooklm)
- [Import Markdown files into NotebookLM](https://nlmexporter.com/guides/import/markdown-files-to-notebooklm)
- [Import an EPUB book into NotebookLM by chapter](https://nlmexporter.com/guides/import/epub-book-to-notebooklm)