Calendar Extension for Google Calendar™ Firefox

Calendar Extension for Google Calendar™

By: Sergey Add-on
This Calendar Extension: Manage events, calendar reminders & sync calendars. Join video meetings in a shared calendar app.

Features & Capabilities

📅 The Google Calendar extension that puts your schedule one click away: check Google Calendar from any tab, create events, send a Google Calendar invite, RSVP, and join video meetings, all from your browser toolbar, without opening a new tab.\n\nClick the toolbar icon (or press Alt+C) and your day, week, or month appears instantly. It is the fastest way to answer "where is my Google Calendar?" while you keep working on whatever page you are on.\n\nWHY THIS CHROME CALENDAR\nMost people either keep a Google Calendar tab open all day or lose track of their schedule entirely. This chrome calendar addon solves both: a compact popup that works like a Google Calendar widget and behaves like a computer desktop calendar, always within reach. No separate download or desktop client required: sign in once, and this lightweight Chrome plugin brings your full schedule into the toolbar. The popup opens in a fraction of a second and closes the moment you click away, so checking what is next never breaks your flow.\n\nKEY FEATURES\n• Day, week, and month views — a compact calendar tool with a live now indicator and smart grouping: Happening Now, Coming Up, Later, Completed.\n• Quick add — create an event with title, date, time, duration, and guests in seconds; every Google Calendar invite is sent automatically, making Google Calendar appointment scheduling a two-click job.\n• One-click meeting join — the extension detects Google Meet, Zoom, and Microsoft Teams links in your events and shows a Join button right on the event card.\n• RSVP from the popup — accept, decline, or reply Maybe to invitations; the full Google Calendar app stays closed.\n• Calendar reminder done right — desktop notifications before events, an optional badge with a countdown to your next event, and Focus Mode for when you need quiet.\n• Everything in one place — show or hide each of your schedules individually, with colors matching Google Calendar™.\n• Google Calendar dark mode and more — a proper dark theme for late hours, plus light and warm themes, simple or advanced toolbar, and adjustable display size.\n• Works offline — recently loaded events stay available even without a connection.\n• Speaks your language — 52 languages, automatic time zone handling, and keyboard shortcuts for fast navigation.\n\nHOW TO SHARE A GOOGLE CALENDAR\nWondering how to share a Google Calendar without digging through settings? This is a genuinely shareable calendar app: open the sharing panel, enter an email address, choose view or manage rights, and the Google schedule share is done. The other person sees your events in their own app, and revoking access is just as easy. It works as a shared calendar app for a team or a family calendar app for the household, with no extra service in between.\n\nHOW TO USE\n1. Install the extension and click its icon in the Chrome toolbar.\n2. Sign in with your Google account — your events load automatically.\n3. Check your schedule, create events, RSVP, and join meetings without leaving the current page.\n\nWHO IT IS FOR\nAnyone who lives by their schedule: teams juggling meetings and deadlines, families coordinating plans, students tracking classes, freelancers managing client appointments. It keeps your day in sight while you work through your to-do list: a real online calendar planner in your toolbar instead of another heavyweight calendar software install. There is nothing to configure on day one: sensible defaults out of the box, deeper options when you want them. If your browser is open all day, this calendar app is now one click away.\n\nREPLACE THE WORKAROUNDS\nIf you have been improvising with a Google Sheets calendar template or a hand-made planner in Google Docs, this extension replaces that patchwork with a live, synced schedule. And for everyday availability sharing and appointment scheduling, the built-in tools are usually all you need. Creating an event, inviting guests, and sharing your schedule take a few clicks, no third-party scheduler required.\n\n🔒 PRIVACY\nYour events travel directly between your browser and Google. The extension has no servers of its own, never sees your data, and does not collect, sell, or share anything. Settings are stored locally on your device.\n\nSUPPORT\nQuestions or ideas? Write to tdallstr@gmail.com — feedback shapes every release.\n\n🚀 GET STARTED\nClick Add to Chrome and see today's schedule right away. Stay on top of work meetings, family plans, and everything in between. Make your browser smarter and your day simpler.\n\nGoogle Calendar™ is a trademark of Google LLC. This extension is an independent project and is not affiliated with or endorsed by Google.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Sergey
Daily users:
1
Version:
3.0.3 Last updated: 2026-09-03
Version code:
6451315
Creation date:
2026-08-31
Firefox add-on GUID:
calendar-extension@sergeyilyin
Firefox add-on numeric ID:
3063774
Weekly download count:
3
Firefox on Android:
No
Risk:
Moderate risk impact High risk likelihood
Permissions:
Host permissions:
  • https://www.googleapis.com/*
  • https://oauth2.googleapis.com/*
Size:
2.28MB
URLs:
Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-05
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Sergey
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/google-calendar-extension/

Is Calendar Extension for Google Calendar™ Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Calendar Extension for Google Calendar™ requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: googleapis.com
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Calendar Extension for Google Calendar™ is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
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