GCalPlus

Extra Options for Google Calendar

GCalPlus is a powerful Chrome extension designed to supercharge your Google Calendar experience. It adds a wide array of customization options, productivity tools, and multi-calendar management features that keep you organized and efficient.

With GCalPlus, you can expand the month view grid, highlight busy/free days with intuitive toggle buttons, display more all-day events in various views, and hide duplicate invites across shared calendars. The extension offers a sleek dark mode to match the latest Google Calendar interface, and advanced controls like multiple event copying, calendar changing within event popups, and timezone customization.

Additional features include enhanced event pop-up interactions, weekend background coloring, disabling annoying month scrolling, and displaying event descriptions on hover. GCalPlus also supports multi-calendar event display optimization, debug mode for troubleshooting, and convenient UI adjustments like larger dots and alphabetized events.

This extension is free and continuously updated with user feedback, making it an essential productivity tool for anyone who relies on Google Calendar for daily scheduling.

Manifest V3 Extension
By:
https://gcaltools.com
Users:
50,000
Rating:
3.86
(142)
Version:
3.0.4 Last updated: 2025-03-26
Creation date:
2019-08-14
Risk:
High risk impact Very low risk likelihood
Permissions:
  • scripting
  • activeTab
  • storage
  • identity
  • webNavigation
  • declarativeContent
Host permissions:
  • https://www.googleapis.com/*
  • https://calendar.google.com/calendar
  • https://accounts.google.com/o/oauth2/v2/auth
Size:
256.00KB
Email:
gc*****@gcaltools.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Chrome Web Store
Data ingested on:
2025-07-09

Publisher Change History

2024-02-10: Email was changed from ne*****@gcaltoolkit.com to gc*****@gcaltools.com

Upgrade to see full email

User reviews

Users generally appreciate GCalPlus for improving Google Calendar's usability by preventing accidental scrolling, highlighting events with color, and offering useful features like multiple event copying. The developer's responsiveness is also praised. However, multiple users report bugs and glitches after recent updates, such as reloading issues and disappearing features. Some functionalities intermittently stop working, frustrating users. Requests for additional features like better color labeling and improved filtering are noted. Overall, the extension significantly enhances calendar experience but has reliability issues that impact user satisfaction.
Pros
  • Effectively stops mouse scroll from changing months, preventing accidental month jumps.
  • Enhances Google Calendar by highlighting events with colored backgrounds, improving visibility.
  • Allows customization like hiding non-active hours to declutter the calendar view.
  • Supports useful features like multiple event copying and scheduling improvements that save time.
  • Developer is responsive and quickly addresses bugs and user feedback.
Cons
  • Extension occasionally glitches causing calendar views to misbehave, such as excessive white space or disappearing buttons.
  • Recent updates have introduced bugs like continuous reloading and arrow key scrolling issues.
  • Certain features like "Month's show busy dates" periodically stop working without a clear fix, requiring reinstallation or cache clearing.
  • Some users experience issues with extension settings disappearing after authorization or the settings pop-out closing unexpectedly.
  • Missing advanced features like multiple color labels for personal accounts and more precise time filters were noted.
Recent reviews
I have been using google calendar to run my business for nearly 2 decades. At some point 12-15 years ago, Calendar restricted the All Day Events section to just a tiny fraction of the screen, with no way to adjust. I just discovered this extension 15 minutes ago. Whoever wrote this app you are a god send! Thank you thank you thank you!
by Ni*****, 2025-06-17

I searched and found this primarily for removing/blocking the mouse scroll changing the months in the calendar (so annoying and prone to making note/addition mistakes on events, etc). It seemed to install without issues, but then when clicking the extension icon the page would quickly refresh and the 'settings' pop out would disappear. I read some previous reviews here mentioning the 'remove-reinstall' fix and removed the extension, closed the browser, opened it, navigated to the extension in the store, added it, opened Google calendar, and clicked on the icon, and then connect. After giving Google access permissions the extension icon now opens the settings pop out which remains open for selections to be made. Bueno!
by B *****, 2025-04-22

I had the same problem as Sina Laura after the update. I tracked the issue down to this extension and then saw the developer's comment. I did the actions suggested and, bingo! It's working fine again. Thanks for the fix information. Chrome Version 135.0.7049.85 (Official Build) (64-bit)
by Wa*****, 2025-04-10
View all user reviews ›

Extension safety

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.

GCalPlus requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: {{requestedDomains}}
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

GCalPlus has earned a good reputation and can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* ** ****** ** ********
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

Promo images

GCalPlus marquee promo image
Marquee promo image
Small promo image

Compare extensions

Similar extensions

Here are some Chrome extensions that are similar to GCalPlus:

Popular extensions / apps

Here are some popular extensions / apps that you might be interested in: