Who makes NotebookLM Extension (Gemini Notebook) - ExtendLM?

NotebookLM Extension (Gemini Notebook) - ExtendLM is published by ExtendLM.

What servers does NotebookLM Extension (Gemini Notebook) - ExtendLM send data to?

Our analysis observed NotebookLM Extension (Gemini Notebook) - ExtendLM sending data to www.google-analytics.com.

Is NotebookLM Extension (Gemini Notebook) - ExtendLM safe?

Q: Is NotebookLM Extension (Gemini Notebook) - ExtendLM safe?

NotebookLM Extension (Gemini Notebook) - ExtendLM is low risk. The rating reflects signals from our analysis that have not yet been published as detailed findings.

Low risk

NotebookLM Extension - ExtendLM sends a persistent anonymous UUID to Google Analytics on every extension interaction.

The extension enhances Google NotebookLM by adding features such as folder management, audio recording, and source organization, operating exclusively on notebooklm.google.com. On first launch it generates a random UUID and stores it in local storage, then sends this identifier alongside event names and parameters to Google Analytics each time the user opens the popup, views a page, or clicks a button. No browsing history or notebook content is included in these analytics payloads.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

ExtendLMv2.6.95Chrome Web Store

15Risk

Who publishes it

ExtendLM - no other listings under this identity, 11 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher

ExtendLM

Website

extendlm.com/support

Shared hosts - 11 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

api.osf.io

Also called by 1 other listing: Lazy Scholar

api.plos.org

Also called by 2 other listings, including Distill

chemrxiv.org

Also called by 2 other listings, including Supawork AI Scholar Helper | Academic Translation

a9.com

Also called by 4 other listings

federalregister.gov

Also called by 4 other listings, including PERRLA — APA & MLA Citation Generator for Research Papers

fred.stlouisfed.org

Also called by 4 other listings

imsglobal.org

Also called by 4 other listings, including NotebookLM Quiz Exporter, HMH Player

ntrs.nasa.gov

Also called by 4 other listings

osf.io

Also called by 4 other listings, including Lazy Scholar

hal.science

Also called by 5 other listings

openstax.org

Also called by 6 other listings, including PERRLA — APA & MLA Citation Generator for Research Papers

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed NotebookLM Extension (Gemini Notebook) - ExtendLM contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

www.google-analytics.comwidely used
NotebookLM Extension (Gemini Notebook) - ExtendLM sends data to www.google-analytics.com. A widely used service: 388 other extensions we have analyzed send data here.