Is Calendar Dark Mode safe?

Low risk

Calendar Dark Mode can load Google Fonts when its optional monospace font add-on is enabled.

When the monospace font add-on is enabled, Calendar Dark Mode injects a stylesheet on Google Calendar and Google Tasks pages. That stylesheet imports Fira Code and Roboto Mono from Google Fonts, which sends the page's font request details to Google Fonts.

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

alexstarostav0.5.0Chrome Web Store
15Risk

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

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.5.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Act on the current tab, but only after you click the extension

    activeTab

  • Run its own code inside the pages you visit

    scripting

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed Calendar Dark Mode 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.

  • fonts.googleapis.comwidely used

    Calendar Dark Mode sends data to fonts.googleapis.com. A widely used service: 123 other extensions we have analysed send data here.

Updated 30 September 2026djohocjcheabcpjfaokeancojipglfbe