Leetcode Calendar

Name: Leetcode Calendar
Author: Charlie Weinberger

By: Charlie Weinberger

A web extension that displays your leetcode submission history as a heatmap/calendar every time you open a new tab!

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Features & Capabilities

Do you want to spend more time doing leetcode, but keep putting it off or forgetting to make time for it? If so, then this extension is for you. Leetcode Calendar is a web extension that shows a minimalist view of your leetcode submission history as a heatmap/calendar every time you open a new tab. By reminding you of your leetcode progress every time you open a new tab, you'll never forget to do your daily leetcode problem to get that green square.

Current Features:

Display data for any leetcode username
Display tooltip for showing submissions for any day
Toggle whether to view data in the current year (2025) or previous 365 days
Toggle whether or not to view the title text
Toggle whether to view a green colorway vs. orange colorway
Submit user feedback within the extension

Check out the github repository here for more information! https://github.com/charlieweinberger/leetcode-calendar

User Growth & Download Statistics

Add-on

By:

Charlie Weinberger

Daily users:

Version:

1.4.0 Last updated: 2025-03-17

Version code:

5911029

Creation date:

2025-03-16

Risk:

Permissions:

storage

Host permissions:

https://leetcode.com/graphql
https://api.resend.com/emails

Size:

1.40MB

Email:

ch*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 132,733 ▲ 3,110

Other rankings

#30 in leetcode keyword 18 ▲ 1#81 in calendar keyword 29 ▼ 3

For Developers

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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:

Charlie Weinberger

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/leetcode-calendar/

Email:

ch*****@gmail.com

Website:

https://github.com/charlieweinberger/leetcode-calendar

Is Leetcode 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.

Leetcode Calendar requires very minimum permissions.

Risk impact analysis details

Medium Can change homepage settings, which might annoy the user but typically carries low risk.
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Low ******* ****** ** *** ********* ******** ************* **********

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.

Leetcode Calendar is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****